Lithium Battery FAQs

Match the voltage of the pack already in the cart. Add up the voltages printed on the existing batteries (six 8-volt batteries, for example, make a 48V system) or check the cart's controller and charger, which are built for one system voltage. Epoch sells lithium batteries and complete kits for 36V, 48V and 72V carts.

The Golf Cart Battery Kit Finder narrows the choice to the kits that fit your cart.

A conversion kit bundles the lithium battery with a matching charger and the hardware needed to install it in place of the lead-acid pack. Mounting brackets are available for Club Car and EZGO carts and charging port plugs for Yamaha carts, so the battery sits in the existing tray and the charger plugs into the cart's port. Most models are also sold battery-only for owners who already have a lithium charger and hardware.

Range depends on the battery's capacity, the cart's weight and passengers, the terrain and how fast you drive. A higher amp-hour battery stores more energy and goes further: a 48V 160Ah kit will outlast a 48V 105Ah kit on the same course. The Golf Cart Range Estimator gives an estimate for your cart and battery.

Usually not. A charger installed for a lead-acid pack should not be assumed compatible with a lithium conversion, even when both are described as 36V or 48V: it needs a lithium charge profile at the right voltage, and lead-acid chargers are only suitable when they are programmable for one. Epoch golf cart kits include a matching lithium charger, and 36V and 48V chargers are sold separately.

Read Can I use my existing charger with a LiFePO4 battery?

Use a dedicated 48V-to-12V voltage reducer rather than tapping one battery or part of the pack. With a lead-acid pack, accessories were often wired across a single 12V section, which drains those cells unevenly; a single lithium battery has no 12V section to tap. A reducer feeds the accessories from the full 48V and keeps the battery balanced. Reducers and other install parts are in Accessories.

GC2 modules are 48V lithium batteries in the same GC2 case size as the 6V and 8V lead-acid batteries most carts carry, so they drop into the existing tray. Each 48V 30Ah or 48V 60Ah module is a complete 48V battery, and you combine modules to reach the capacity you want; the complete kits pair them with a charger and hardware. Browse the GC2 golf cart module kits.

No. The kits are designed for owners to install, and the complete upgrade guide walks through the swap. If you would rather have it done, Find a Dealer lists the nearest authorized installers offering golf cart battery installation, with the distance from your ZIP code.

Match the motor's voltage. Trolling motors run on 12V, 24V or 36V, so you either use one battery of that voltage or wire 12V batteries in series to reach it: two for 24V, three for 36V. Epoch makes single 24V and 36V batteries, which save the wiring and the weight of a bank. Then choose the capacity for the runtime you want.

See the trolling motor battery buying guide and the trolling motor batteries.

Runtime is the battery's capacity divided by the motor's current draw, and the draw depends on how much thrust you use. A motor at full power draws several times what it draws at trolling speed, so a day of fishing is mostly low draw with bursts of high. The guide Trolling motor lithium battery run-time works through the calculation for common motors and capacities.

Only a dual-purpose model rated for cranking. The marine starting batteries, such as the Pro Series dual-purpose batteries, the 12V 120Ah Group 27 and 12V 300Ah Group 8D dual-purpose batteries and the 12V 172Ah Essential Series dual-purpose battery, deliver the burst current an engine start needs and then serve house loads. A deep-cycle-only battery is built for steady loads, not engine starting, and should not be used as a starting battery.

A starting battery delivers a large current for a few seconds to crank the engine and is then recharged by the alternator. A house battery delivers a modest current for hours to run electronics, lights, livewell pumps and refrigeration, and is discharged deeply and recharged daily. Epoch's house batteries are deep-cycle models; the dual-purpose models do both jobs in one battery.

An outboard's charging circuit was designed around a lead-acid battery, and a lithium bank will accept whatever current it offers, which can overwork it. The safe arrangement is a DC-DC charger between the engine's charging circuit and the lithium bank: it limits the current, applies a lithium charge profile and protects both sides. Epoch sells DC-DC chargers, and the Charging & Inverters guides explain alternator charging.

It depends on the unit's draw and how long you fish. A small unit runs all day on a compact 12V battery; large multi-screen setups with sonar and live imaging need more capacity. The fish finder battery guide works through the numbers, and the fish finder batteries are sized for electronics.

Epoch batteries come in standard case sizes, including Group 24, Group 27, Group 31 and 8D, so many models drop into the tray the lead-acid battery came out of. Each product page lists the battery's dimensions and weight; compare them with your tray and hold-down before ordering, and remember the lithium battery will be lighter than what it replaces.

For optimal performance and safety when using 12-volt batteries with trolling motors, electronics, or any application requiring regular charging, follow these guidelines:

For General Use:

- Charging Recommendations: Utilize an Epoch charger or a similar quality charger. During the charging process, you may receive a "High Voltage" or "Fully Charged" alert through the app. This indicates that the battery is fully charged and is not a cause for alarm.

- Maximum Charge Voltage: Although the maximum charge voltage is specified as 14.6 volts, the actual voltage at which the battery is considered fully charged may be lower. The Battery Management System (BMS) determines the fully charged state based on several parameters, with voltage being just one of them. Once fully charged, the charge MOSFETs will disengage to prevent overcharging, as commanded by the BMS. Alternatively, the charger may stop the charge if it detects that the battery is full, and no BMS warning will be displayed. In either scenario, the battery is ready for use.

For Use with Victron Communications, Alternator Charging, or Solar Charging:

- Maximum Charge Voltage: Set a lower maximum charge voltage of 13.8 or 13.9 volts to ensure stable operation and to prevent nuisance codes on the Cerbo GX and unintentional disconnections of charge MOSFETs. Disconnections during direct alternator charging may cause voltage spikes harmful to sensitive electronics in your DC system.

- System Considerations: It's crucial for the user or installer to thoroughly evaluate the operational aspects, system configuration, and programming of the electrical installation to avoid damage. Epoch is not liable for damages resulting from incorrect system design or installation.

- Float Voltage: Adjust the float voltage to 13.4 or 13.5 volts. In systems with constant loads (e.g., lighting, fans), the charger in float mode should supply most, if not all, of the current needed for these loads while maintaining the battery voltage at the set float level. The effectiveness of this operation is influenced by the charger's capacity, float mode voltage setting, and the total load.

- Solar Charging Considerations: The ability of the charger to maintain the batteries during solar charging will vary throughout the day with the available sunlight.

Initial Use and Battery Balancing:

- Initial Alarms: Early cell overvoltage or "High Volt/Batt Full" alarms during the first few charge cycles are normal and should not be a cause for concern. These alarms usually resolve after a few charge/discharge cycles.

- Initial Charging Recommendation: To aid in the balancing of the cells, it is recommended to initially charge the battery at a 0.05C rate (5 amps per 100 Ah of battery capacity). Perform this initial charge in a warm environment to avoid activating the battery's heating system.

Specific Parameters for the 460AH Battery:

- The charge MOSFETs will disconnect if the voltage exceeds 14 volts, the charge current drops below 3.6 amps, and these conditions persist for more than 10 seconds.

- Cell balancing starts when the battery voltage reaches 13.35 volts with a cell deviation of 0.050 volts.

By adhering to these guidelines, you can ensure safe and efficient operation of your 12-volt battery systems in various applications.

For installing waterproof connectors on a 460AH battery, follow these steps to ensure a secure and reliable connection, minimizing the risk of damage from improper handling:

1. Hold the Connector: Start by holding the unplugged connector in one hand.

2. Loosen the Gland Nut: Loosen the gland nut on the backshell just enough that the cable can freely slide back and forth through the backshell and cap assembly.

3. Slide the Cable: Pull enough cable through so that you can comfortably plug the connector into the battery.

4. Connect to the Battery: While applying very slight pressure on the cable towards the battery connector, gently slide the connector assembly onto the battery port. Proceed to screw down the cap securely but without overtightening.

5. Tighten the Gland Nut: After the connector is in place, tighten the backshell gland nut to secure the cable. Again, ensure it's tight but avoid overtightening to prevent damage.

6. Ensure Adequate Strain Relief: Make sure the communication cable is adequately clamped to nearby structures to provide strain relief. This helps prevent any pulling or stress on the connector itself.

7. Proper Cable Routing: Ensure the cable is routed properly to avoid sharp bends close to the plug, which could damage the cable or compromise the connection.

These steps are designed to protect the integrity of the waterproof connector and ensure a long-lasting, secure connection for your 460AH battery. Proper installation helps prevent issues related to side forces or pull-out forces, ensuring your battery operates efficiently and safely.

Most RVs need 100Ah to 200Ah of lithium capacity for light use, 200Ah to 300Ah for moderate use, and 300Ah, 400Ah, 460Ah or more for off-grid, solar and inverter-heavy setups. The right figure depends on how much energy you use in a day, which appliances you run, whether you use an inverter and how long you want to stay off-grid. The RV battery sizing guide shows how to add up your daily use.

Only if it has a lithium charge profile. A LiFePO4 battery wants a constant-current stage followed by a short absorption at a lithium-appropriate voltage and no float or equalization stage, and many converters and inverter-chargers built for lead-acid never reach the right voltage or hold a float the battery does not need. Check your converter's settings for a lithium mode; otherwise replace it with a lithium-capable unit. The RV buyer's guide covers converter and inverter compatibility.

Yes, through a DC-DC charger. A lithium bank connected straight to an alternator will draw as much current as the alternator can give, which can overheat it. A DC-DC charger between the two limits the current to what the alternator can supply continuously and charges the battery with a lithium profile. Epoch stocks Victron Orion DC-DC chargers and its own DC-DC chargers.

If you will charge below freezing, yes. LiFePO4 cells must not be charged below 0 °C (32 °F), and every Epoch battery's BMS blocks charging until the cells are warm enough. A self-heating model uses charging power to warm its cells first, so it can charge from solar, the converter or the alternator on a freezing morning. Discharging is not affected the same way, so a non-heated battery still runs the furnace overnight; it just will not take a charge until it warms. Browse the heated RV batteries.

With enough capacity and an inverter sized for it, yes, but an air conditioner is the largest load in an RV and empties a small bank quickly. Large inverter loads are also more efficient on a 24V or 48V system, which halves or quarters the current a 12V bank would carry through its cables. Before planning on it, size the bank with the RV buyer's guide or contact support.

Every Epoch battery works with Victron chargers, inverters and solar controllers set to a lithium profile. The Elite Series V2 batteries go further: they communicate directly with Victron GX devices, so the system runs with the battery's own data in place of a shunt and the charging equipment follows the BMS. Epoch sells Victron Energy components alongside the batteries.

Not in the same bank. The two chemistries charge to different voltages and discharge along different curves, so wired together one is always overcharged or under-used and the lithium battery's BMS ends up cycling. Replace the whole bank, or keep the lead-acid batteries in a separate bank with its own charging. The same applies to mixing lithium models of different capacity or age in one bank.

Yes. To reach a full charge and get the battery's full service life, use a charger with a dedicated lithium (LiFePO4) charge profile at the battery's voltage: a 12V charger for a 12V battery, and 24V, 36V and 48V chargers for those systems. Epoch's own LiFePO4 chargers are matched to its batteries, and the recommended charge voltages for your model are in its user manual.

Read Do LiFePO4 batteries need a special charger?

Only when its output voltage, current, charging stages and any automatic functions match what your battery's manual specifies. A lead-acid charger is generally not appropriate unless it is programmable for a lithium profile. If you are not sure, contact support with the battery model, the charger model, its output voltage range, its amperage and its charging stages, and the team will tell you whether it is safe to use.

Read Can I use my existing charger with a LiFePO4 battery?

Up to the maximum charge current on the model's datasheet, which is what the BMS allows. A larger charger shortens the charge time up to that limit; a 12V 50A charger, for example, fills a 12V battery in a fraction of the time a 15A charger takes. Above the limit the BMS steps in, so there is no benefit to a bigger charger than the battery accepts. Datasheets are under Datasheets on the resources page.

Not unless it heats itself. Charging LiFePO4 cells below 0 °C (32 °F) damages them, so every Epoch battery's BMS has low-temperature charge protection that refuses a charge until the cells warm up. Self-heating models warm their cells with charging power first and then charge normally. If a battery will not charge on a cold morning, warming it is usually all that is needed.

A charger with a proper lithium profile stops when the battery is full, so leaving it connected between uses is fine. For longer storage it is better to disconnect the charger and store the battery partly charged, since a lithium battery does not need to be held at full charge and is happiest stored below it. Read Leaving lithium batteries connected to chargers: what happens?

Slowing near the top is normal: the charger drops its current during the absorption stage while the BMS balances the cells. Stopping short of 100% usually means the charger's absorption voltage is set below what the battery needs, or the reading is the app's estimate drifting from the true state of charge. The guides LiFePO4 battery not charging to 100%? and LiFePO4 battery charging slowly near full? cover what to check.

It depends on the model and its BMS. Some models allow up to four in series and four in parallel, while the large high-capacity models and the 48V models are for parallel use only. Check the limits on your battery's datasheet before wiring a bank, and follow the wiring steps in its manual. Both are on the resources page.

Read What's the difference between series and parallel battery connections?

Yes. Use batteries of the same model and capacity, bought at the same time, and charge each one fully before connecting them together so they start in balance. Batteries that differ in capacity, age or state of charge share the load unevenly, and the weakest one limits the whole bank. The guide Effects of parallel connections on LiFePO4 performance explains why.

A fuse rated for the current the battery can deliver into a short circuit. Lithium batteries have very low internal resistance and can deliver far more fault current than lead-acid, so high-capacity banks and inverter feeds call for a Class T fuse, which is rated to interrupt that current safely. Fit the fuse as close to the battery's positive terminal as the manual allows, and never replace a fuse with one of a different type or rating; a non-specified replacement fuse can void the warranty.

Read What is a Class T fuse?

An inverter's capacitors charge in an instant when it is first connected, drawing a large inrush current that the BMS reads as a short circuit and disconnects. A pre-charge circuit, or the pre-charge resistor built into some battery switches, lets the capacitors fill slowly before the main connection is made. Read What is a pre-charge circuit?

The BMS has hit one of its limits, usually the continuous or peak discharge current, and disconnected to protect the cells. Compare the load with the discharge rating on the datasheet: a large inverter, a winch or a high-thrust trolling motor at full power can exceed a small battery's limit on its own. Adding a battery in parallel, where the model allows it, shares the current. Read Lithium battery shuts off under load? What to check.

Size the cables to the continuous current of the loads and the charger and to the length of the run; too thin a cable drops voltage and heats up. Your battery's manual gives the minimum cable size and terminal torque, and the System Design & Wiring guides cover bank layout. If you are planning a larger system, contact support and the team will check the design.

On the resources page: user manuals for every model, datasheets and certifications, wiring guidance and the app downloads. Each product page also links its own manual and datasheet.

The apps are free and depend on the battery:

• Epoch Li-Ion, for most Bluetooth batteries: App Store (opens in a new tab) or Google Play (opens in a new tab).
• Epoch Pro, for Pro Series dual-purpose batteries: App Store (opens in a new tab) or Google Play (opens in a new tab).
• Epoch Cloud, for V2 Elite Series batteries with Victron communications: App Store (opens in a new tab) or Google Play (opens in a new tab).

All three are listed under Bluetooth App on the resources page.

Live state of charge, voltage and current, the battery's health, its temperature and, on heated models, whether the heater is running. It is the quickest way to check a battery before a trip and to confirm that a charger is actually charging.

Make sure Bluetooth is on and the phone is close to the battery, that the app has been granted the Bluetooth and nearby-device or location permissions it asks for, and that no other phone is already connected to the battery, since it pairs with one at a time. A battery that has been in storage may need to be woken with a charger before it advertises. If it still does not appear, contact support with the battery model and phone model.

They measure differently. The app reports the BMS's estimate from inside the battery; a shunt-based monitor counts the current in and out at its own shunt. Both drift between full charges, and a LiFePO4 battery's flat voltage curve gives neither much to correct against until the battery is full or nearly empty. A full charge resynchronizes them. Read why the app and monitor differ and SOC drift explained.

Yes, with the right model. V2 Elite Series batteries with Victron communications report to the Epoch Cloud app over the internet, so you can check the bank from anywhere. Pro Series batteries connect to the Pro Series communications box and 5-inch touchscreen display for whole-system monitoring on board. Bluetooth-only models are read within Bluetooth range of the phone.

Yes. Use a solar charge controller, ideally an MPPT controller, with a lithium profile set to the charge voltages in your battery's manual. Epoch stocks Victron solar charge controllers, and Elite Series V2 batteries let a Victron system follow the battery's own BMS. The Solar & Off-Grid guides cover panel sizing and controller settings.

Add up the energy your loads use in a day, then size the bank to cover it with a margin for cloudy days and the solar array to replace it in the hours of sun you get. The Solar Calculator does this for a camper, a boat, a cabin or a home from the appliances you list.

The larger the inverter, the higher the voltage should be. A 12V system suits small loads and existing 12V equipment; at 2,000 to 3,000 watts and above, a 24V or 48V bank carries a fraction of the current, so cables, fuses and connections run cooler and the inverter works more efficiently. Whole-home and server-rack storage is built at 48V. Epoch makes batteries for 12V, 24V and 48V systems.

Yes. The energy storage systems collection has the 48V 100Ah server-rack battery, a self-heating 3U unit that stacks with others (stacking feet are sold as an accessory) for home and commercial storage; its current certification status is on its product page. For installation, Find a Dealer lists installers offering home energy and off-grid electrical work.

Most Epoch batteries carry an 11-year limited warranty. Coverage varies by model: Eco Series batteries carry a 6-year limited warranty and recertified batteries a 2-year limited warranty. The warranty terms page lists the full terms with a warranty-term-by-model schedule under them, and each product page states the term for that model.

To ensure your battery is covered by the warranty, you must register it within 90 days of purchase. Visit the Product Registration Page (opens in a new tab) to complete the registration process. If the battery is not registered within this period, the warranty will begin from the manufacturer date of the battery. Proof of ownership, such as the sales receipt, is required for all warranty claims.

No. The warranty applies to the original purchaser of the battery and does not transfer with the battery, the boat, the cart or the vehicle it was installed in.

The warranty covers defects in materials and workmanship for the term listed for your model. It does not cover damage caused by over-discharge, improper storage, misuse or physical damage, and installing a fuse other than the specified replacement can void coverage. The warranty terms give the full list of conditions and exclusions.

For Eco Series and Essential Series batteries, the published terms provide repair or replacement with a comparable product at no cost for parts and labor in years one to three, a comparable product at 40 percent off retail price in years four and five, and a comparable product at 25 percent off retail price for the rest of the warranty period. Other series have their own schedules. The warranty terms govern.

Open a claim on the warranty portal (opens in a new tab), where you can also track it. You will need proof of purchase and the battery's serial number. You arrange and pay for shipping the battery to Epoch; once an in-warranty battery has been inspected and repaired or replaced, Epoch pays the shipping back to you. Shipping and handling on chargers and accessories is the customer's responsibility.

Epoch Batteries provides an 11-year limited warranty on their Lithium Iron Phosphate (LiFePO4) batteries. This warranty ensures that the batteries are free from manufacturer defects for 11 years from the date of sale, as determined by the buyer’s sales receipt. Additionally, Epoch Batteries offers a 1-year limited warranty on all accessory components, including chargers, fuel gauges, voltage reducers, and other accessories.

No, the warranty provided by Epoch Batteries is non-transferable and applies exclusively to the original purchaser of the battery.

If a valid warranty claim is made and the battery cannot be repaired, the following process will be followed based on the model and the period: Epoch Essential Models and 48V GC2 Golf Models:

• Years 1-3: The manufacturer will replace the defective battery free of charge with a similar product.
• Years 4-5: A similar product will be offered at 40% off the retail MSRP listed at the time of the offer.
• Years 6-11: A similar product will be offered at 25% off the retail MSRP listed at the time of the offer.

All Other Models:

• Years 1-5: The manufacturer will replace the defective battery free of charge with a similar product.
• Years 6-11: A similar product will be offered at 25% off the retail MSRP listed at the time of the offer.

Yes, the warranty does not cover batteries that have been subjected to the following conditions:

• Damage due to being unsecured or insufficiently secured.
• Improper installation, use, maintenance, or service.
• Loose battery terminal connections.
• Connecting more than 4 batteries in series (above 48V).
• Reverse polarity connections.
• Inappropriate storage conditions, including exposure to extreme ambient temperatures above 140°F or below -40°F, fire, or water submersion, and storing the battery in a completely discharged state.
• Any short circuit caused by accidental, intentional, or inadvertent connection of the positive and negative terminals.
• Damage caused by impact, accident, collision, or drop.
• Under/overcharging the battery as defined in its respective Battery Owner’s Manual.
• Use with other third-party products that fail.
• High resistance due to corroded terminals, poor crimps, or insufficient cable size.
• Failure due to a faulty electrical system.
• Batteries that have been opened, modified, or tampered with in any way.
• Use in applications other than those for which the battery was designed and intended, including repeated engine starting or drawing more amps than the battery is rated to continually discharge.
• Batteries that have not been charged for over one year.
• Use in commercial applications where the battery is cycled to more than 80% depth of discharge repeatedly within 24-hour periods.

If an accessory component, such as a charger, fuel gauge, or voltage reducer, is defective within the 1-year warranty period, Epoch Batteries will provide a full replacement of the defective component.

For more information or to initiate a warranty claim, you can contact Epoch Batteries through the following methods:

1. Mailing Address: Epoch Batteries, 164 Andrew Drive, Stockbridge, GA 30281
2. Customer Support Phone Number: 1-888-501-1846
3. For additional details about the warranty or to register your battery, please visit the Product Registration Page (opens in a new tab).

Returns are accepted within 30 days of delivery for unused items in their original packaging. The customer pays the return shipping, a 25 percent restocking fee is deducted, and the refund goes to the original payment method. The full terms are on the return policy page.

Contact support or open a request on the warranty portal (opens in a new tab) before shipping anything back, so the return is authorized and you have the correct address and packing instructions. Pack the battery safely in its original packaging; the customer is responsible for the battery arriving undamaged.

No. Epoch does not provide prepaid labels and does not accept freight-collect or COD shipments. You arrange and pay for the return shipment, including packaging and any insurance.

The return policy covers unused batteries in their original packaging. A battery that has been installed and has a fault is handled under the warranty instead: open a claim on the warranty portal (opens in a new tab) and the team will inspect, repair or replace it under the warranty terms.

We offer a 30-day return policy. You must request a return within 30 days of receiving your item.

The item must be in the same condition as when you received it, unused, and in its original packaging. Additionally, you need to provide the receipt or proof of purchase. We will check voltages and internal BMS data for any signs of usage.

Yes, all returns are subject to a 25% restocking fee.

To initiate a return, contact us at support@epochbatteries.com. Provide your order details and reason for return.

If you don't have the original packaging, contact us to arrange for replacement packaging, which will be necessary for the return.

Inspect your order upon reception. If the item is defective, damaged, or incorrect, contact us immediately at support@epochbatteries.com so we can evaluate and address the issue.

Report any defects or damages as soon as possible after receiving your order to ensure a timely resolution.

Yes, the fastest way to exchange an item is to return the original item and place a new order for the desired item once the return is accepted.

While we do not charge a specific fee for exchanges, the return of the original item will incur a 25% restocking fee.

Once we receive and inspect your return, we will notify you of the approval or rejection of your refund. If approved, the refund will be processed and automatically applied to your original payment method, minus a 25% restocking fee.

Refunds are processed promptly after approval, but it may take some time for your bank or credit card company to process and post the refund to your account.

The battery must be shipped in a lithium-ion UN approved shipping box. If you did not save the original packaging, contact us to arrange for replacement packaging.

For batteries weighing up to 79 lbs, the cost for replacement packaging is $25 plus actual shipping charges. For batteries over 79 lbs, contact us for a box and shipping quote.

The buyer is responsible for the cost of return shipping, including the cost of replacement packaging if required.

Returns requested after the 30-day window may not be accepted. Contact us as soon as possible if you have a special circumstance.

No, returns are only accepted for items that are unused and in their original packaging. Used batteries do not qualify for return.

If the internal BMS data indicates the battery has been used, the return may be denied, and the item will be sent back to you.

We will notify you via email once your return has been received and inspected. You will be informed whether the return has been approved and the refund processed.

If you haven't received a refund after receiving our approval notification, contact your bank or credit card company as processing times can vary. If there is still an issue, contact us for further assistance.

Yes, you can contact us at support@epochbatteries.com to inquire about the status of your return.

While we strive to process returns and exchanges as quickly as possible, contacting us promptly and providing all necessary information can help expedite the process.

Only unused batteries in their original packaging are eligible for return. Custom orders or items marked as final sale may not be returnable. Contact us for specific inquiries.

No, we do not provide return labels. The buyer is responsible for shipping the return and covering the associated costs.

Ensure the battery is properly packed in a lithium-ion UN approved shipping box and follow all shipping regulations for hazardous materials.

Currently, we do not accept returns at physical locations. All returns must be processed through our online return procedure.

Contact us immediately at support@epochbatteries.com to report the issue. We will provide instructions for returning the incorrect item and sending you the correct one.

Include the battery in its original packaging, the receipt or proof of purchase, and any accessories or documentation that came with the item.

For more details or specific inquiries, you can contact us at support@epochbatteries.com or refer to our return policy (opens in a new tab) on our website.

Feel free to contact us at support@epochbatteries.com for any further questions or concerns regarding our return policy.

Yes. Start a repair request on the warranty portal (opens in a new tab). Once the battery arrives, Epoch's technicians inspect and test it; the typical repair turnaround is 3 to 10 business days, depending on the fault.

Epoch can still repair it. If the fault is outside warranty coverage, such as over-discharge, improper storage, misuse or other excluded damage, you are told before any work is done and receive an itemized quote for parts, labor, shipping and handling. No non-warranty repair is carried out until you approve it.

You arrange and pay for the shipment to Epoch, including packaging and insurance. Lithium batteries are regulated freight, so follow the packing and carrier instructions the team gives you when the request is approved, and pack the battery so its terminals cannot short and it cannot move in the box.

Most shutdowns are the BMS protecting the cells, not a fault. Disconnect the loads, check the temperature (a cold battery will not charge until it warms), then connect a charger with a lithium profile and watch the app: an over-discharged battery usually recovers once it accepts a charge, and an overcurrent trip clears when the load is removed. If it will not respond to a charger or the app reports an error, contact support with the model, the serial number and what the app shows. Read What happens when a LiFePO4 battery goes into protection mode?

Epoch ships from multiple distribution hubs across the USA, including two warehouses in Georgia and one in California, with more locations coming soon. Orders placed through an authorized dealer or online partner ship from that dealer.

Yes. Canadian customers see pricing in Canadian dollars, and customers in the European Union shop the EU storefront, which carries the models configured for the European market. For other countries, contact support or use Find a Dealer to find an authorized dealer near you.

Delivery time depends on the destination and the carrier service, and you receive tracking by email as soon as the order ships. For a delivery estimate before you order, or a lead time on a large or multi-battery order, contact the sales team.

For a return and for shipping a battery to Epoch for any reason, the customer pays. For an approved in-warranty battery repair or replacement, Epoch pays the shipping back to you after inspection. Shipping and handling on chargers and accessories is the customer's responsibility in both directions. Epoch does not provide prepaid labels or accept freight-collect or COD shipments.

On this site, from an authorized Epoch dealer or installer near you, or from one of the online partners that ship Epoch batteries direct. Find a Dealer shows the nearest dealers for the installation you need and lists the online partners.

On the Find a Dealer page, choose the installation you need (golf cart, marine electronics, RV, or home energy and off-grid) and enter your ZIP code, or use your current location. It lists the three nearest authorized dealers offering that service, nearest first, with the distance, address and a call button, and shows more on request. Dealers are shown with their tier, so you can see which are Epoch's most experienced partners.

Apply on the Become a Dealer page. Epoch reviews each application for business fit, customer base, market alignment and the ability to represent the brand professionally; OEM builders, installers, integrators, specialty dealers, retailers and commercial operators with a plan to sell, install or support Epoch products are encouraged to apply. Approved dealers get wholesale pricing and order through the dealer portal (opens in a new tab).

Yes. Creators and site owners who reach boaters, RVers, golfers or off-grid builders can apply to the Epoch affiliate program. Applications are reviewed before an affiliate account is created.