Battery Weight Calculator

Light Mode

Calculate battery pack weight based on cell type, number of cells, configuration, and BMS/wiring costs.

Cell Type

Weight per cell — editable (grams)

Enter exact weight if you have a specification (default selection: 21700=68g, 18650=48g, pouch=120g)

Input configuration

Series (S)

Parallel (P)

Or enter a number of cells directly

If S and P are entered, S×P will be calculated and the 'Number of Cells' field will be ignored.

BMS & wiring overhead

Enter a percentage (e.g. 7) or a fixed weight in grams (e.g. 1500). Default is 7%.

More options

Include structure/holder (est) Show weight per cell (including overhead)

Optional parameters

Cell capacity (mAh) — optional

Nominal voltage/cell (V) — optional

Enter these values if you want calculations like kWh supplied (estimate).