The definitive guide to drop-in lithium iron phosphate batteries for RV, van life, cabin, and home off-grid systems.
Lithium iron phosphate (LiFePO4) batteries are the best choice for off-grid and RV use for several reasons:
3,000–5,000+ full cycles vs 300–500 for AGM. That's 8–15 years of daily use.
LiFePO4 chemistry won't vent toxic gases or catch fire, unlike NMC or lead-acid.
1C continuous discharge (100A from a 100Ah battery) – handles inverters and power tools.
Sizing guide by RV type, drop-in upgrade tips, and boondocking recommendations.
RV GuideCompact batteries for camper vans. Space-efficient builds for Sprinter, Transit, and Promaster.
Van GuideLarger battery banks for cabins and homes. 24V/48V systems, rack-mount options.
Cabin GuideAll batteries below are drop-in replacements with built-in BMS. Prices are approximate; check current Amazon pricing.
| Battery | Voltage | Capacity | Warranty | Cycle Life | Bluetooth | Heater | |
|---|---|---|---|---|---|---|---|
|
Battle Born BB10012 |
12.80V | 1,280 Wh | 10 years | 3,000 | Check Price | ||
|
Battle Born BB5024 50Ah 24V |
25.60V | 1,280 Wh | 10 years | 3,000 | Check Price | ||
|
Battle Born BB5024H 50Ah 24V Heated |
25.60V | 1,280 Wh | 10 years | 3,000 | Check Price | ||
|
RELiON RB100 |
12.80V | 1,280 Wh | 10 years | 3,500 | Check Price | ||
|
Renogy RBT100LFP12-G1 |
12.80V | 1,280 Wh | 5 years | 4,000 | Check Price | ||
|
Litime 12V 200Ah Plus Self-Heating LiFePO4 |
12.80V | 2,560 Wh | 5 years | 4,000 | Check Price | ||
|
LiTime 24V 100Ah LiFePO4 Lithium Battery |
25.60V | 2,560 Wh | 10 years | 4,000 | Check Price | ||
|
Renogy RBT200LFP12-G1 |
12.80V | 2,560 Wh | 5 years | 4,000 | Check Price | ||
|
Battle Born 270Ah 12V Heated |
12.00V | 3,456 Wh | 10 years | 5,000 | Check Price | ||
|
ECO-WORTHY 48V 100Ah Server Rack |
51.20V | 5,120 Wh | 5 years | 15,000 | Check Price | ||
|
LiTime 24V 230Ah Smart Self-Heating LiFePO4 Battery |
25.60V | 5,888 Wh | 5 years | 4,000 | Check Price | ||
| DIY – 4× raw cells + BMS | 12V | ~1,100–1,500 Wh | ~$0.22/Wh | None | 2,000–3,000 | — | Learn More |
Disclosure: Amazon links are affiliate links. We may earn a commission at no extra cost to you.
If you're comfortable with basic electronics, buying raw prismatic LiFePO4 cells from reputable suppliers (EVE, CATL, Lishen) and building your own battery pack can cost as low as $0.20–$0.25/Wh – a fraction of drop-in battery prices.
Use our 18650 Pack Builder for cylindrical cell packs, or our System Calculator to determine how much battery capacity you need.
A battery bank is just one part of your off-grid setup. You'll also need these components:
MPPT controllers are 20-30% more efficient. Essential for systems above 200W.
Browse ControllersUse our system calculator to find the exact battery bank size for your appliances.
Calculate My Battery Size