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Battery Information
This guide for use by qualified installers only.
Table 6
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 20 for 24 volt system)
Ah
Recommended Battery Bank Size in Ah (multiply by 2)
Ah
FSW 230V Installation Guide.book Page 61 Tuesday, August 7, 2018 9:18 AM