White Knight Battery Calculator – Web
by
Kyle LaPach
14 Oct 2025
White Knight Runtime Calculator
Model assumptions: 12 V, 200 Ah battery and 200 W PV array. Default usable battery is set to match ~23 h at 80 W. All loads are treated as AC through the inverter unless noted.
Loads
| Device | Watts | Qty | Duty % | Avg W | |
|---|---|---|---|---|---|
Total average load: W
Daily consumption: Wh/day
Results
Inverter check:
Solar balance:
Battery-only runtime:
Solar-assisted runtime:
Solar-assisted runtime reflects daily net energy balance (solar in minus load).
System parameters
Usable battery: Wh
Solar/day: Wh