RV & coach power
RV Lithium Batteries
Drop-in LiFePO4 house batteries for motorhomes, travel trailers and fifth wheels. Boondock longer, carry hundreds of pounds less and stop babysitting the battery bank.
- Full usable capacity for real boondocking runtime
- Hundreds of pounds lighter than an equivalent AGM bank
- Bluetooth monitoring on supported models
- Solar, shore and alternator charging supported
100%
Usable capacity
50%
5,000+
Cycles at 80% DoD
12V
Standard house voltage
- Boondock ready
- Lightweight
- Solar compatible
- Matched chargers
- US-based support
How it works
1
Total your daily amp-hours
Fridge, furnace fan, lights, water pump and devices. Size the bank to a full day plus reserve.
2
Check every charge source
Converter, solar controller and DC-DC charger each need a LiFePO4 profile.
3
Plan the winter
If the coach is stored or used in freezing weather, choose a heated pack or block charging below freezing.
Not sure what fits?
Find my kit
12V 100ah Fleet Lithium Engine Starting (Group 27)
Sale price $59900 USD Regular price $74900Unit price- Regular price $1,04999 USDUnit price
Buyer questions
RV lithium FAQ
Is it a true drop-in replacement?
In most coaches, yes — same footprint class as group 24/27/31 lead-acid. The converter still needs a lithium profile.
How many batteries do I need?
Add your daily amp-hour draw and size the bank to cover it with reserve. Most weekend boondockers land between 100Ah and 300Ah.
Will my converter charge it?
Only with a LiFePO4 charge profile. Older lead-acid converters undercharge lithium and shorten runtime.
Can I charge while driving?
Yes with a DC-DC charger. Connecting straight to the alternator can overload it.
What about freezing temperatures?
The BMS blocks charging below safe temperature. Choose a heated model for cold-weather camping.
What warranty applies?
Warranty coverage is listed on each product page; Promise series packs carry a 10-year warranty with US-based support.