12V Battery Runtime Tool

Instant off-grid battery endurance & solar sizing

1. Battery Setup
2. Connected Loads
3. Estimated Runtime
Continuous Runtime
-- hrs
--
Usable Energy
-- Wh
Avg Current Draw
-- A
Enter loads above to see solar panel recommendations.
Recommended Off-Grid Gear

Tested hardware to match your battery and solar calculations:

→ 100Ah / 200Ah LiFePO4 Lithium Batteries
Grade-A cells, smart Bluetooth BMS, and 10+ year lifespan.
→ 200W Folding Solar Blankets & Panels
Monocrystalline portable solar with built-in MPPT regulators.
→ Pure Sine Wave Inverters (1000W–2000W)
Safe power for camping fridges, CPAP, laptops, and chargers.