12V LiFePO4 Batteries — Lightweight Sealed Lead-Acid Replacements

Swap your heavy lead-acid battery for lithium — and never replace it again. These BSLBATT 12V lithium iron phosphate (LiFePO4) batteries are engineered as direct, plug-and-play replacements for 12V sealed lead-acid (SLA), AGM, and gel batteries. Same voltage, same form factors, a fraction of the weight, and up to 10× the lifespan.

Why upgrade?

  • 50–70% lighter than lead-acid — a game-changer for mobility scooters, wheelchairs, and portable power.
  • Up to 10× longer life — 1,500–3,500+ cycles vs ~300–500 for SLA. One lithium battery outlasts five or more lead-acid replacements.
  • More usable capacity and a flat voltage curve — full power until nearly empty, no lead-acid sag.
  • 100% maintenance-free & safe — built-in BMS, no acid, no off-gassing, safe in non-ventilated boxes.
  • 5-year warranty on every battery.

Pick your size (on sale now)

  • 12V 7Ah & 12Ah — wheelchairs, scooters, alarm panels, small UPS.
  • 12V 20Ah — mobility, UPS, small solar.
  • 12V 50Ah (Group U1) — solar, UPS, RV/marine, larger mobility.
  • 12V 100Ah (Group 31) — solar/off-grid, RV house power, inverters (up to 200A discharge).

To replace a lead-acid battery, match the voltage (12V) and confirm the case size and terminals fit your device. Not sure? Contact us and we'll confirm the right fit — or read LiFePO4 vs Lead-Acid.