Size battery bank capacity based on daily energy demand, autonomy days, depth of discharge, and system voltage.
Input Parameters
Results
--
Required Capacity
Ah
--
Required Capacity
kWh
--
Usable Capacity
kWh
Note: Size batteries for 2-3 days autonomy for off-grid. Temperature derate accounts for cold weather capacity loss (typically 80-90% at 32F).
Reference
Total Energy = Daily Load x Autonomy Days
Required kWh = Total Energy / (DoD x Temp Factor)
Required Ah = (Required kWh x 1000) / System Voltage
Usable kWh = Required kWh x DoD