Advanced LiFePO4 Batteries for 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 Marine Batteries
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 supportUL Listed models available
Certain models are available with full UL certification. Each certified model shows a “UL certified” badge and its certificate on its product page. Ask our team which one fits your setup.
Contact usLimited warranties up to 11 years
Terms vary by model. The coverage schedule is published with the terms.
Read the warranty terms
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 U.S.-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.
- 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 BatteriesSafer Chemistry, Tested
Lithium iron phosphate is the most thermally stable lithium chemistry, with a far lower thermal-runaway risk than other lithium types. Every Epoch battery adds BMS protection on top, and UL-certified models publish their certificate on the product page.
Datasheets and certificationsDesigned & Engineered in the USA
Designed and engineered in the USA and shipped from distribution hubs across the country: two Georgia warehouses and one in California today, with more coming soon. Quality, reliability and support are handled by our own team.
Where we design and ship fromLimited Warranty up to 11 Years
Most Epoch batteries carry an 11-year limited warranty. Terms vary by model, and the coverage schedule is published with the terms.
Read the warranty termsAdvanced BMS
Equipped with an advanced Battery Management System that protects from overcharging, overdischarging, overcurrent, and short circuiting.
What a BMS doesCustomer favorites
Best Selling Models
The 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.
2x more usable energy.
Get twice as much usable energy compared to traditional Lead Acid batteries. Maximize performance without compromising efficiency.
Up to 10x the cycle life.
Our LiFePO4 batteries are rated for thousands of charge cycles, roughly ten times a lead-acid battery. Cycle ratings vary by model and are listed on every product page with the depth of discharge, charge rate, temperature and end-of-life capacity they were measured at.
Less than half the weight.
High power density without the bulk. Enjoy lightweight, yet robust energy solutions. Less weight, more freedom.
Epoch Lithium
3.5 hoursLead Acid
8 hoursBuilt for winners
Trusted by Industry Professionals
2026 Angler Team
Drew Gill
Major League Fishing Bass Pro Tour
- 2026 Tackle Warehouse Pro Circuit Championship, Kissimmee Chain of Lakes (MLF recap, opens in new tab)
- 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
Their choice
Shop pro-approved batteries
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.
Featured videos
Epoch Batteries in Action
Real installs, real-world tests and a look inside the batteries, on YouTube.
Customer Reviews
Loved by Thousands
Epoch 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
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.
Find an authorized Epoch dealer or installer
