Battery Bank Calculator
Size your off-grid battery storage for reliable power.
Your Requirements
From your solar calculator or utility bill
How long without sun?
Battery Bank Size
Total Storage Needed
6,000 Wh
(6.0 kWh)
Usable Capacity Required
12,000 Wh
Accounting for 50% DoD
Amp-Hours at 48V
250 Ah
100Ah Batteries Needed
3 batteries
Estimated Cost
Lead-acid: $450
LiFePO4: $1,350
Tip: LiFePO4 batteries cost more upfront but last 3-5x longer than lead-acid. For daily cycling, they're usually more cost-effective over time.