67
Battery Information
Table 7
Battery Sizing Worksheet
Appliance
(A) Power Consumption
(Watts)
(B) Operating Time per
Day (Hours)
Daily watt-hours needed
for this appliance
(= A × B)
W
hours
Wh
W
hours
Wh
W
hours
Wh
W
hours
Wh
W
hours
Wh
W
hours
Wh
W
hours
Wh
W
hours
Wh
Total daily watt-hours of AC load
Wh
× Number of days between charges
= Total watt-hours of AC load between charges
Wh
Battery Ah used between charges (divide by 10 for 12 volt system; divide by 20 for
24 volt system)
Ah
Recommended Battery Bank Size in Ah (multiply by 2)
Ah
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