Deep Cycle vs Starting Battery: Which One Is Right for You?
Starting vs. deep-cycle battery explained, including key differences, benefits, uses, marine applications, and tips to choose the right battery for your needs.
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Advanced LiFePO4 Batteriesfor Marine, RV & Golf Carts
Long-lasting lithium power with smart battery management, Bluetooth monitoring and heated options, backed by U.S.-based support. Warranty coverage varies by model.
Lithium MarineBatteries
Lithium RV & CamperBatteries
U.S.-based support
Phone and email help from our own team, Monday to Friday, 9 AM to 4 PM Eastern, on 1-888-501-1846.
Contact supportLimited warranties up to 11 years
Terms vary by model. The coverage schedule is published with the terms.
Read the warranty termsIP-rated housings, by model
Sealed enclosures from IP54 to IP67, with each model's rating on its product page and in the comparison table.
Compare modelsAdvanced BMS in every battery
Protection against overcharge, over-discharge, overcurrent and short circuit, plus low-temperature charge protection.
What a BMS does
Shop by Application
Start from what you are powering: every collection is sized and filtered for that use.
Solar Calculator
How Big Should
Your Battery Bank Be?
Pick the appliances you'll run and get a custom lithium battery bank, solar array, and inverter recommendation in about 60 seconds — backed by US-based support.
Battery Bank Size
Minimum kWh for your loads and days of autonomy
Solar Array Wattage
Panels sized to refill a full day of use
Inverter & Epoch Match
Inverter size plus the exact batteries to buy
Free, no signup. Every recommendation is an Epoch battery with an advanced BMS and a limited warranty of up to 11 years; terms vary by model.
Marine Batteries
Unbeatable reliability and performance for electric boats, yachts, and ships.
RV & Camper Batteries
Safe, long-lasting LiFePO4 power built for life on the road.
Golf Cart Batteries
High-performance lithium upgrades for unparalleled range and speed.
Elite Series
The Epoch Elite Series is a premium line of batteries that deliver exceptional performance and reliability. These batteries are designed to meet the demands of high-performance applications, providing long-lasting power and durability.
- More PowerTwice the usable energy of lead-acid
- 200%
- Half the WeightHalf the weight
- 1/2
- Years Design LifeYears design life
- 15+
- BMS ProtectionsBMS safety protections
- 20+
Why Epoch
Why Choose Epoch Batteries?
Veteran Owned
Epoch Batteries is a veteran-owned company. We are proud to serve our country and our customers with the highest quality products and service.
About Epoch BatteriesThe Epoch Advantage
Feel the Difference
2.3x
Faster
2.3x faster charging.
Supercharge your battery experience with LiFePO4 technology. Swift, efficient charging for ultimate convenience.
Epoch Lithium
3.5 hoursLead Acid
8 hoursEpoch Li-ion App
Complete Battery Control
In Your Pocket
Monitor every cell, track performance history, and receive real-time alerts — all from your smartphone.
Real-Time Monitoring
Track voltage, current, and state of charge live
Bluetooth Connected
Instant wireless access to your battery data
Safety Alerts
Get notified of any abnormal battery conditions
Built for winners
Trusted by Industry Professionals
Epoch's 2026 Angler Team runs our lithium on the Major League Fishing circuit, and marine and RV electrical specialists fit it in customer builds. Here is who, and what they have won with it.
2026 Angler Team
Drew Gill
Major League Fishing Bass Pro Tour
- 2026 Tackle Warehouse Pro Circuit Stop 1, Harris Chain of Lakes (MLF recap, opens in new tab)
- 2026 Bass Pro Tour Stage 1, Lake Guntersville (MLF recap, opens in new tab)
- 2025 Bass Pro Tour Stage 3, Lake Murray
- 2024 Bass Pro Shops Summit Cup, MLF Team Series, with Marshall Robinson (team title) (MLF recap, opens in new tab)
- 2024 Bass Pro Tour Stage Five, Chowan River (MLF recap, opens in new tab)
- 2024 Tackle Warehouse Invitationals Stop 1, Sam Rayburn Reservoir (MLF recap, opens in new tab)
Kyle Cortiana
Major League Fishing Toyota Series
Andrew Nordbye
Major League Fishing
Mitch Robinson
Major League Fishing
- 2025 Tackle Warehouse Invitationals Stop 2, Lake Hartwell
- 2023 Bassmaster High School National Championship
Robert Gee
Epoch 2026 Angler Team
Installers and system builders
Why the pros run Epoch
Steady power all day
LiFePO4 holds its voltage from the first cast to the last, so the trolling motor never fades late in the day.
About half the weight of lead-acid
A lighter boat gets on plane faster, handles better and burns less fuel between spots.
Made for the elements
Waterproof housings, Bluetooth monitoring from the deck, and self-heating models for cold early-season launches.
Charged before the next launch
About 2.3 times faster to charge than lead-acid, so an overnight top-up covers a full tournament day.
Cranking and deep cycle in one
Pro Series dual-purpose batteries start the outboard and run the house loads, so there is one less battery to carry.
Backed for the long haul
Limited warranties up to 11 years, terms by model, and US-based support from a veteran-owned company.
Their choice
Shop pro-approved batteries
Customer Reviews
Loved by Thousands
Verified reviews from customers powering their adventures with Epoch.
Talk to a person
Not sure which battery fits? Ask our U.S.-based team.
Call 1-888-501-1846, Monday to Friday, 9 AM to 4 PM Eastern, or send a message and we will size the bank for your boat, RV, cart or off-grid system.
Prefer a local install?
Authorized dealers and installers for golf cart, marine, RV and home energy work, searched by ZIP code, with online partners for everywhere else.
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