Battery Size Calculator (for Solar and Backup Applications)


Battery Voltage VDC When finished here, move on below and select your loads.
Battery Buss Voltage VDC


Define Your Loads, Efficiency, and Required Runtime
Select your wattage, dc conversion and inverter efficiencies, then click Step 1
Select your backup times and click Step 2
(select 100% inverter efficiency if no inverter is used)
Wattage
DC Conversion Efficiency (%)
Inverter Efficiency (%)
Adjusted
Wattage
Backup Time Required
(In Minutes)
Watt Minutes
Per Cycle
Load 1
W
%
%
W
Minutes
Load 2
W
%
%
W
Minutes
Load 3
W
%
%
W
Minutes
Load 4
W
%
%
W
Minutes
Load 5
W
%
%
W
Minutes
Total
W
W




Size Your Batteries
choose the number of cycles, allowable depth of discharge, and battery capacity then hit done

Maximum Watt-Hours Per Day Watt-Hours
Maximum Amp-Hours Per Day Amp-Hours
Days of Storage Cycles (Standard is 1)*
Allowable Depth of Discharge % (between 50 and 80%)*
Required Total Battery Capacity Amp-Hours
Select Individual Battery Capacity Amp-Hours *
Number of Batteries in Parallel Batteries
Number of Batteries in Series Batteries
Number of Batteries Total Batteries
Amp Hour Capacity Total Amp-Hours
Total Watt-Hour Capacity Watt-Hours
        * = required field

 

 


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