Big Box Series
Capacity: 230Ah
Configuration: EZGO TXT
Dust-tight and protected against temporary immersion to 1 m for 30 minutes.
Over 10 years at one full cycle a day. Rated at the depth of discharge, charge rate and temperature stated on the datasheet, to its end-of-life capacity.
Charge, voltage and temperature on your phone in the Epoch Li-Ion app.
Guards against overcharge, over-discharge, overcurrent and short circuit.
Lithium iron phosphate has a far lower thermal-runaway risk than other lithium chemistries. The BMS adds over-temperature and low-temperature charge protection.
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Replaces the whole lead-acid bank
51.2V (48V class), 230Ah and 11.78kWh in a stainless-steel IP67 case with built-in Bluetooth and BMS. 300A continuous, 1,000A peak for up to 2 seconds. 23.5 × 14.4 × 9.9 in, 196 lb.
Onboard LiFePO4 charger
Charges the battery with a LiFePO4 charge profile. It is powered through the cart's charge port, so you plug in from outside the cart.
Included with the charger
Plugs into the cart's charge port and a standard 120V AC outlet, so you can charge from outside the cart.
Dash mount
Shows state of charge from 0 to 100%, battery voltage, current and temperature at a glance, and shows warnings when the BMS raises an alarm.
With wiring harness
Turn the battery on and off from the dash. The 6 ft harness links the battery's communication port to the switch, gauge and charger.
Stretched cart? Get the 13 ft harness
For 12V accessories
Fused, with a key-on (enable) wire for the cart's key switch. Runs 12V headlights, light bars, radios and USB outlets from the 48V battery: input 40–90V, regulated 13.5V output, 25A maximum load.
Matched to your cart
Replaces the cart's factory lead-acid charging receptacle and feeds AC power to the onboard lithium charger. Replacing the original receptacle is required for safety.
Free for iOS and Android
Connects over Bluetooth to show state of charge, voltage, current, temperature, battery health and warnings on your phone, and installs firmware updates over the air.
Complete 48V lithium golf cart conversion
A complete 48V golf cart lithium conversion kit: the 230Ah battery, a 48V 22A onboard lithium charger with a 10 ft heavy-duty extension cord, a digital Bluetooth battery gauge, a 6 ft remote on/off power switch, a fused 48V to 12V step-down converter, a cart-specific charge port plug and free Bluetooth app access.
The Epoch 48V 230Ah golf cart battery complete kit (model BB51230A-Kit-1, Big Box Series) converts a compatible 48V golf cart from lead-acid to lithium without sourcing every part separately. One 51.2V (48V class), 230Ah, 11.78kWh LiFePO4 battery replaces a full bank of 8V or 12V lead-acid batteries. The kit adds a 48V 22A onboard lithium charger with a 10 ft heavy-duty extension cord, a digital Bluetooth battery gauge, a 6 ft remote on/off power switch with wiring harness, a fused 48V to 12V step-down converter rated 25A with a key-on wire, a cart-specific charge port plug to replace the factory charging receptacle and free access to the Epoch Li-Ion app. Mounting brackets are not included.
Choose EZGO TXT for an EZGO TXT cart: its charge port plug is matched to the cart. Choose Other for another compatible 48V cart, and confirm tray space for the 23.5 × 14.4 × 9.9 in case, mounting, cable routing and charge-port wiring before installation.
Mounting brackets are not included in either configuration: plan hold-down hardware rated for the battery's 196 lb (89 kg) weight. For EZGO TXT carts, the Mounting Bracket for EZGO TXT (BB51230-TXT1) is sold separately.
Replace a lead-acid bank with one 230Ah LiFePO4 golf cart battery.
This kit replaces a full bank of 8V or 12V lead-acid batteries with a single 51.2V (48V class) 230Ah LiFePO4 battery. The result is one battery instead of a bank, and no watering or acid service; routine inspections of the terminals, cables and mounting still keep it operating safely.
With 300A continuous discharge, 500A for up to 15 seconds and 1,000A for up to 2 seconds, it supports acceleration, hills and upgraded controllers and motors whose current demand fits the battery ratings. Before installing, confirm your cart is a compatible 48V platform, that the battery bay fits the 23.5 × 14.4 × 9.9 in case, and check terminal clearance, cable size, overcurrent protection, hold-down hardware and the controller's current settings.
The core conversion components in one kit.
Instead of sourcing a battery, charger, extension cord, gauge, remote switch, converter and charge port separately, the kit brings the main conversion components together. The listed kit contents do not include mounting brackets or a main fuse or DC-rated breaker: secure the battery with hold-down hardware rated for its 196 lb (89 kg) weight, install a fuse or breaker selected for the wire, load and system voltage, as close as practical to the battery positive terminal, and make sure the cables and lugs are sized for your installation.
Not in the box: mounting brackets. Secure the battery with hold-down hardware rated for its 196 lb (89 kg) weight so it cannot slide, tip or strike nearby equipment. For EZGO TXT carts, the Mounting Bracket for EZGO TXT (BB51230-TXT1) is sold separately.
| 12V converter wiring (from the converter label) | |
|---|---|
| Yellow · 40–90V+ | Input positive, from the 48V system |
| Black · 40–90V− | Input negative, from the 48V system |
| Orange · KEY ON+ | Key-switch (enable) input |
| Red · 13.5V+ | Output positive, to 12V accessories |
| Black · 13.5V− | Output negative, to 12V accessories |
Two converter wires are black: confirm the input negative and the output negative before connecting, since reversing them can damage the converter or the accessories. Turn the battery off and disconnect the charger before wiring the converter. The label does not specify fusing or connector pinout; follow the kit instructions or have a qualified installer confirm them for your cart.
EZGO TXT, plus other compatible 48V carts, neighborhood electric vehicles and utility vehicles.
High-current LiFePO4 power with included conversion components.
Ratings at 25°C unless noted, from the BB51230A-Kit-1 spec sheet, technical data sheet and user manual (Rev V01, September 2026).
| General | |
|---|---|
| Brand | Epoch Batteries |
| Product | 48V 230Ah Golf Cart Battery Complete Kit - Lithium (LiFePO4) |
| Model / SKU | BB51230A-Kit-1 (EZGO TXT); BB51230A-Kit-2 (Other) |
| Series | Big Box Series |
| Battery type | LiFePO4 golf cart battery, 48V class |
| Chemistry | LiFePO4 (lithium iron phosphate) |
| Cell configuration | 16S1P (16 prismatic cells in series) |
| Cart configurations | EZGO TXT; Other (compatible 48V carts) |
| Bluetooth | Yes — Epoch Li-Ion app (iOS and Android) |
| Firmware updates | Over the air (OTA) through the app |
| CAN communication | CAN connector on the harness, for manufacturer or dealer BMS updates |
| Cycle life | 4,000+ cycles |
| Warranty | 11-year limited warranty: free repair or replacement in Years 1–5, then 40% off MSRP on a replacement battery in Years 6–11. Register within 90 days or keep your proof of purchase. |
| Electrical | |
| Nominal voltage | 51.2V (48V class) |
| Nominal capacity | 230Ah |
| Stored energy (nominal) | 11.78kWh (11,776Wh) |
| Operating voltage range | 40–58.4V |
| Maximum charge voltage | 58.4V |
| Power-down state | Any cell below 2.2V, or pack voltage about 38V |
| Self-discharge | 3% per month |
| Current ratings | |
| Max continuous discharge | 300A (1.3C) |
| Peak discharge | 500A for up to 15 s; 1,000A for up to 2 s |
| Max continuous charge | 230A (1C) |
| Peak charge (regenerative braking) | 500A for up to 15 s |
| Battery banks | |
| Series connection | Not supported |
| Parallel connection | Max 2 batteries (460Ah, 23.55kWh) |
| Charging | |
| Included charger | 48V 22A onboard lithium charger, powered through the cart's charge port |
| AC connection | 10 ft heavy-duty extension cord (included) to a standard 120V AC outlet |
| Charge time | About 10.5 h from empty with the included charger |
| Charger restart | Below about 95% SOC, if the charger stays connected |
| Full charge | SOC resets to 100%; the gauge reads 100% |
| Power-down recovery | Switch the battery on, then charge immediately |
| Lead-acid chargers | Not compatible: they will not properly charge or balance the battery |
| Temperature | |
| Charge | 0°C to 55°C (32°F to 131°F); no internal heater |
| Discharge | −10°C to 55°C (14°F to 131°F) |
| Storage (up to 1 month) | −20°C to 55°C (−4°F to 131°F) |
| Storage (recommended) | 0°C to 35°C (32°F to 95°F); up to 12 months |
| Mechanical | |
| Dimensions (L × W × H) | 23.5 × 14.4 × 9.9 in (597 × 366 × 251 mm) |
| Weight | 196 lb (89 kg) |
| Case material | Stainless steel |
| Controls and ports | On/off switch, communication port, vent, positive and negative terminals |
| Mounting | Upright, secured with hold-down hardware rated for 196 lb (89 kg); brackets not included |
| Enclosure rating | IP67 per IEC 60529: dust-tight; temporary immersion (1 m, 30 min); not rated for water jets or pressure washing |
| Kit contents | |
| Battery | 48V 230Ah LiFePO4 golf cart battery |
| Charger | 48V 22A onboard lithium charger with a 10 ft heavy-duty extension cord |
| Gauge | Digital Bluetooth battery gauge (dash mount) |
| On/off switch | 6 ft remote on/off power switch with wiring harness (13 ft harness available for stretched carts) |
| 12V converter | Fused 48V to 12V step-down converter, 25A, with key-on (enable) wire (input 40–90V, output 13.5V) |
| Charge port | Cart-specific charge port plug (replaces the factory charging receptacle) |
| App | Free Epoch Li-Ion app access (iOS and Android) |
| Not included | Mounting brackets; main fuse or DC-rated breaker |
| BMS protection | |
| Over-voltage | Cell and pack over-voltage protection |
| Under-voltage | Cell and pack under-voltage protection |
| Over-current | Charge and discharge over-current protection |
| Short circuit | Discharge short-circuit protection |
| Temperature | Charge and discharge over/under-temperature, ambient and MOSFET over-temperature protection |
| Cell balancing | Integrated; cell-unbalance alarm |
| Low-charge warning | Buzzer and gauge warning below 20% SOC |
| Compliance | |
| Enclosure | IP67 per IEC 60529 |
One battery instead of a bank, and no watering or acid service.
LiFePO4 (lithium iron phosphate) is a lithium-ion chemistry valued for thermal stability and long cycle life. Its voltage stays nearly flat across most of the discharge, and the battery needs no watering or acid service, only routine inspections.
How the included charger, gauge and on/off switch work day to day.
The BMS reports alarms and protection events on the gauge, with the buzzer and in the app.
An alarm is an early warning; a protection event means the BMS has limited or stopped charging or discharging. Alarms beep 1 s on and 1 s off; protection events beep 0.2 s on and 0.2 s off. If the buzzer sounds while driving, slow down or stop and check the battery.
| Gauge display | Cause | Notes |
|---|---|---|
| WARNING2 / 4 | Cell / pack low voltage | Not shown while charging |
| WARNING5 | Large cell-voltage difference | — |
| WARNING6 | Over-discharge | — |
| WARNING7 | Charging over-current | Not shown while charging |
| WARNING8 / 9 | Over-temperature / low temperature | Not shown while charging |
| WARNING10 | Large temperature difference | — |
| WARNING11 | Low SOC: 11–20% alarm; 0–10% protection | Not shown while charging |
| WARNING14 | External communication failure | — |
| No display | Cell or pack over-voltage | No buzzer |
Low-voltage or low-charge warning: stop and charge the battery. Temperature warning: stop, let the battery return to its operating range, and check for blocked airflow or heavy sustained loads. Over-current warning: reduce the load and check the controller's current settings. Detection faults, MOSFET faults or a persistent cell-unbalance alarm: stop using the battery and contact Epoch support with the app screen and the gauge display.
Verify your cart, configuration and hold-down hardware before installation.
Only authorized mechanics or technicians should install the battery. It weighs 196 lb (89 kg): use suitable lifting equipment or enough people to lift it safely. Confirm your cart is a compatible 48V platform and verify tray fitment (the 23.5 × 14.4 × 9.9 in case plus cable clearance), hold-down hardware rated for the battery's weight (mounting brackets are not included), the controller's continuous and peak current settings, cable routing, OBC requirements, charge-port and accessory wiring and charger installation.
No watering or acid service; routine inspections keep it operating safely.
| Inspection intervals | |
|---|---|
| Before each trip or use | Inspect the case, terminals, cables, fuses, disconnects and mounting hardware |
| Monthly during active use | Check terminal tightness, cable condition, app status and resting voltage |
| At least every 3 months in storage | Check the state of charge and recharge as needed |
| Annually | Inspect torque, wiring layout, protection devices, battery tray, ventilation and charger settings |
| After any fault or impact | Stop use, inspect for damage, record the app data and contact support as needed |
Keep the terminals clean and dry; do not use solvents, abrasive cleaners or pressure washing on the battery. Never place a multimeter's current (amps) input across the battery terminals: measure current with a DC clamp meter or a correctly rated shunt.
Common questions about fitment, mounting, included components, charging, 12V accessories, range and care.
The kit comes in two configurations: EZGO TXT, with a charge port plug matched to the cart, and Other for other compatible 48V carts. The battery case is 23.5 × 14.4 × 9.9 in (597 × 366 × 251 mm) and weighs 196 lb (89 kg); confirm tray space and cable clearance, mounting, cable routing, charge-port wiring and your controller's current settings before installation.
Choose EZGO TXT for an EZGO TXT cart: its charge port plug is matched to the cart. For any other compatible 48V cart, choose Other and confirm tray space, mounting, cable routing and charge-port wiring.
No. Mounting brackets are not listed in this kit's contents. Secure the battery with hold-down hardware rated for its 196 lb (89 kg) weight so it cannot slide, tip or strike nearby equipment, and install it upright. For EZGO TXT carts, the Mounting Bracket for EZGO TXT (BB51230-TXT1) is sold separately. Damage from an unsecured or improperly secured battery is excluded from warranty coverage.
The 48V 230Ah LiFePO4 battery, a 48V 22A onboard lithium charger with a 10 ft heavy-duty extension cord, a digital Bluetooth battery gauge, a 6 ft remote on/off power switch with wiring harness, a fused 48V to 12V step-down converter (25A) with a key-on wire, a cart-specific charge port plug that replaces the factory charging receptacle and free access to the Epoch Li-Ion app. Mounting brackets are not included, and the listed kit contents do not include a main fuse or DC-rated breaker; install one close to the battery positive terminal.
No. Lead-acid chargers use different charging profiles and will not properly charge or balance a LiFePO4 battery. The kit includes a 48V 22A onboard lithium charger; Club Car carts with an On-Board Computer (OBC) may need an OBC bypass. Never use lead-acid equalization, desulfation or repair modes on this battery.
About 10.5 hours from empty with the included 48V 22A charger. Charge after each day's use, or at least once a week with occasional use.
Through the included cart-specific charge port plug, which replaces the factory charging receptacle. Plug the 10 ft heavy-duty extension cord that comes with the charger into the port and a standard 120V AC outlet; the port passes AC power to the onboard 48V 22A lithium charger. The charger, not the port plug, sets the LiFePO4 charge profile.
The dash-mounted digital gauge shows the state of charge from 0 to 100%, battery voltage, current and temperature, and shows warnings when the BMS raises an alarm. The kit also includes free access to the Epoch Li-Ion app for iOS and Android, which connects over Bluetooth to show battery status on your phone and install firmware updates over the air.
The included remote on/off power switch comes on a 6 ft harness. For stretched carts, where the battery sits farther from the dash, add the 13 ft Extended Harness for LiMAX Big Box (sold separately). Route the harness along protected frame paths and do not splice or daisy-chain it.
Through the included fused 48V to 12V step-down converter. Connect its key-on (enable) wire to the cart's key switch so it turns on with the key, and its output to the 12V accessory circuits. It delivers a regulated 13.5V output from a 40–90V input and supports up to 25A, so keep the total 12V accessory load within 25A. Two of its wires are black, input and output negative: confirm which is which before connecting.
If you install the kit in a Club Car that uses an older On-Board Computer (OBC) to control the original lead-acid charger, an OBC bypass may be required so the included lithium charger can charge the battery directly. Check your exact model and follow the kit instructions or a qualified installer's guidance.
Range depends on terrain, passenger weight, tire size, lift kits, controller tuning, motor condition, speed and accessory load, so there is no single figure for every cart. The battery stores 11.78kWh (11,776Wh) of nominal energy; track your own usage with the gauge and the app to learn your cart's range.
Yes, when the controller's current demand fits the battery ratings: 300A continuous, 500A for up to 15 seconds and 1,000A for up to 2 seconds. Check the controller's continuous and peak current settings, especially on upgraded or tuned controllers, and keep them within these ratings. Regenerative braking can return up to 500A for 15 seconds; the continuous charge limit is 230A.
Not below freezing. The battery has no internal heater, and the BMS blocks charging outside 0°C to 55°C (32°F to 131°F). Let a cold battery warm above freezing before charging. It discharges from −10°C to 55°C (14°F to 131°F).
It is rated IP67 per IEC 60529: dust-tight and protected against temporary immersion up to 1 m for 30 minutes. It is not rated for water jets or pressure washing; do not submerge it or leave it in standing water, and inspect the battery and connectors after any immersion.
Up to 2 matched batteries of this model can be connected in parallel (460Ah, 23.55kWh at 51.2V). Series connection is not supported. Use batteries of similar age, condition and firmware, charge each fully first, and never mix them with lead-acid batteries or other models.
No watering: the battery needs no watering or acid service, though routine inspections keep it operating safely (check the terminals, cables, fuses and mounting before use, and terminal tightness monthly). For off-season storage, keep the state of charge between 60% and 90%, turn the battery off and store it dry at 10–35°C (50–95°F) where practical, checking the state of charge at least every 3 months. The warranty excludes batteries left uncharged for more than three months.
The BMS reports alarms and protection events on the gauge, with the buzzer and in the app. If the buzzer sounds while driving, slow down or stop and check the battery; otherwise BMS protection may shut it down. For low-voltage or low-charge warnings, stop and charge the battery. For temperature warnings, stop and let the battery return to its operating range. For over-current warnings, reduce the load and check the controller's current settings. For detection faults, MOSFET faults or a persistent cell-unbalance alarm, stop using the battery and contact Epoch support.
Above 20% state of charge, the battery shuts down after 7 days without discharge; at or below 20%, after 24 hours. Press the on/off switch twice to restart: once to reset the switch and once to turn the battery on.
The battery in the BB51230A-Kit-1 carries the 11-year limited warranty (5 years of free repair or replacement, then 40% off MSRP on a replacement battery through Year 11); the included charger is covered for 2 years and the other kit components for 1 year. Coverage is for qualifying defects in materials and workmanship under normal use, subject to Epoch Batteries' warranty terms, model-specific remedy schedule and claim procedures. Proof of ownership is required for any claim, and coverage is non-transferable: it applies only to the original purchaser. Coverage starts on your purchase date. Register within 90 days at epochbatteries.com/pages/product-registration or keep your proof of purchase; if you have neither, coverage starts on the manufacturing date. The full terms at epochbatteries.com/pages/11-year-warranty govern coverage, remedies and exclusions.
As Featured In
Golf Car Options Magazine
Every mark below is a standard this battery has been tested against or a listing it carries. Here is what each one covers, in plain English.
Ingress protection
Dust-tight, and protected against temporary immersion in up to 1 m of water for 30 minutes. Under IEC 60529 the first digit rates solids and the second rates water.
IEC 60529, Degrees of protection provided by enclosures
So far so good.
I bought the 48v 230ah Golf Battery for another purpose than a Golf Cart, for its compact design and 11,776 watts per hour. Using a MultiPlus II for its charging and power consumption, the Epoch battery has been running great.
Like a Glove.
Battery looks and works like a champion 🏆. Fit in the cart like a prom dress. 1 inch more and it would not fit. And to date it works amazing Battery is still 100% drove all around town and speed is great. Bet i could make it to the beach from here. Definitely recommend this one.
Well built plug and play
I recently installed 3 of these batteries in a customer's RV. They were very plug and play and everything seemed to work just fine. I was not able to test the performance but everything seemed to work as designed. They are heavy! So realize you will need a couple pair of strong arms to lift them.
