kVA Tools – Battery Sizing Calculator - IEEE 485

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Size lead-acid batteries for stationary applications per IEEE 485-2020. See Documentation.

Input – Load Details

# Load Description Load Type Specification Load Value Units Duration (min) Start Time (min)

Input – Configuration Parameters

Maximum System Voltage (V)
Minimum System Voltage (V)
Equalizing Voltage per Cell (V)
Float Voltage per Cell (V)
Cable Voltage Drop (V)
Battery/Charger Connection
Lowest Expected Temperature
Design Margin
Aging Factor
Initial Capacity Factor
Battery Chemistry
Rated Temperature
Nominal Specific Gravity
Minimum Cell Voltage

Output – Results

Battery Configuration
Number of Cells Required
Minimum Cell Voltage
Maximum Cell Voltage
Battery Voltage Range
Correction Factors Applied
Temperature Correction Factor
Aging Factor
Design Margin
Combined Correction Factor
Sizing Results
Required Capacity (Corrected)
Uncorrected Capacity
Controlling Section
Total Duty Cycle Duration

Output – Detailed Analysis