BSLBATT 12V 100Ah LiFePO4 Battery – Group 31 Deep-Cycle SLA/AGM Replacement for Solar, RV & UPS (B-LiFePO4-12-100)

The BSLBATT 12V 100Ah is a Group 31 deep-cycle lithium iron phosphate (LiFePO4) battery built as a direct, plug-and-play replacement for 12V 100Ah Group 31/24 sealed lead-acid (SLA), AGM, and gel batteries. A built-in 100A smart BMS (up to 200A continuous discharge) delivers serious power at roughly a quarter of the weight of comparable lead-acid banks.

Why upgrade from lead-acid?

• ~70% lighter — about 23 lbs vs 60–70 lbs for an equivalent 100Ah SLA.
• Up to 10× longer life — 3,000+ cycles, vs ~300–500 for lead-acid.
• Full usable capacity (100Ah / 1,280Wh) and a flat voltage curve — no lead-acid voltage sag.
• High output — up to 200A continuous discharge for inverters and demanding loads.
• 100% maintenance-free; expandable up to 4S/4P (build to 48V or 400Ah).

Common uses

Solar and off-grid energy storage, RV/marine house power, UPS / battery backup, trolling motors, mobility, and general 12V deep-cycle and inverter applications.

Specifications

• Nominal: 12.8V, 100Ah, 1,280Wh
• Dimensions: 12.95 × 6.77 × 8.78 in (Group 31)
• Weight: ~23 lbs (11 kg)
• Built-in 100A smart BMS; up to 200A continuous discharge
• Cycle life: 3,000+ cycles
• Operating temp (discharge): −20 to 60°C; efficiency 99%; self-discharge <1%/month
• Warranty: 5 years

Replacing a lead-acid battery? Match the voltage (12V) and confirm the Group 31 case size and terminals fit. Browse our full LiFePO4 range or read LiFePO4 vs Lead-Acid: Why Lithium Iron Phosphate Is the Upgrade.