| ITEM | WATTAGE | SYSTEM VOLTAGE | ITEM AMPERAGE | HOURS POWERED | AMP HOURS | |
| Usually 12 Vdc | Watts/Volts | Actual time on (in hours) | Amps x Time | |||
| Enter data into these cells | xx.xx | xx.xx | xx.xx | |||
| Sample Item - Toaster | 1500 | 12 | 125.00 | 0.25 | 31.25 | |
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| BATTERY REQUIRED (in AMP HOURS) | Sum of all rows | 31.25 |