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 doesStart from what you are powering: every collection is sized and filtered for that use.
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.
Minimum kWh for your loads and days of autonomy
Panels sized to refill a full day of use
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.
Unbeatable reliability and performance for electric boats, yachts, and ships.
Safe, long-lasting LiFePO4 power built for life on the road.
High-performance lithium upgrades for unparalleled range and speed.
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.
Why Epoch
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 BatteriesLithium 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 and engineered in the USA and shipped from Marietta, Georgia and San Juan, Puerto Rico, with quality, reliability and support handled by our own team.
Where we design and ship fromMost Epoch batteries carry an 11-year limited warranty. Terms vary by model, and the coverage schedule is published with the terms.
Read the warranty termsEquipped with an advanced Battery Management System that protects from overcharging, overdischarging, overcurrent, and short circuiting.
What a BMS doesThe Epoch Advantage
Supercharge your battery experience with LiFePO4 technology. Swift, efficient charging for ultimate convenience.
Get twice as much usable energy compared to traditional Lead Acid batteries. Maximize performance without compromising efficiency.
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.
High power density without the bulk. Enjoy lightweight, yet robust energy solutions. Less weight, more freedom.
Monitor every cell, track performance history, and receive real-time alerts — all from your smartphone.
Track voltage, current, and state of charge live
Instant wireless access to your battery data
Get notified of any abnormal battery conditions
Built for winners
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.
Drew Gill
Major League Fishing Bass Pro Tour
Kyle Cortiana
Major League Fishing Toyota Series
Andrew Nordbye
Major League Fishing
Mitch Robinson
Major League Fishing
Robert Gee
Epoch 2026 Angler Team
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
Customer Reviews
Verified reviews from customers powering their adventures with Epoch.
Talk to a person
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.
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 installerNew to lithium? Start with plain-English guides and the questions we answer most.
Marine & Trolling MotorPublished 8 min read
Starting vs. deep-cycle battery explained, including key differences, benefits, uses, marine applications, and tips to choose the right battery for your needs.
By Stephen Davenport
RV & VanUpdated 18 min read
Learn how to choose the best lithium battery for RV solar setups based on capacity, solar charging, inverter loads, cycle life, battery size, and off-grid use.
By Stephen Davenport
RV & VanUpdated 12 min read
Wondering what size lithium battery do I need for my RV? Learn how to size RV lithium batteries based on amp-hours, watt-hours, inverter loads, solar charging, and off-grid runtime.
By Stephen Davenport
Customer Reviews
Verified reviews from customers powering their adventures with Epoch.
4.9 out of 5 from 3,117 verified customer reviews, collected by Okendo
Perfect for my use around my property with the ability to add one or two more batteries at a later date.
The 15 amp charger that is made for the 36v 100ah battery works like a champ. Quick and efficient charging with every safety feature out there. Excellent product.
I bought 2 - 100ah Marine batteries for my 5th Wheel. They charged easily and I found the BT app to be invaluable. Love the battery cutoff button.
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.
Unbeatable reliability and performance for electric boats, yachts, and ships.
Safe, long-lasting LiFePO4 power built for life on the road.
High-performance lithium upgrades for unparalleled range and speed.
