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Battery Capacity Calculator
Battery capacity in Wh and kWh from voltage and amp-hours, with the energy usable.
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Capacity
Compare Your Options And Get Clear Answers
Battery capacity in Wh and kWh from voltage and amp-hours, with the energy usable.
Battery Capacity Estimator
Enter your numbers below for an instant estimate.
0
π‘ Tip: Wh = volts x amp-hours.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Battery Quick Guide
Typical values for reference.
| Volts | Ah | DoD % | Wh |
|---|---|---|---|
| 12 | 50 | 50 | 600 Wh |
| 12 | 100 | 50 | 1,200 Wh |
| 24 | 100 | 50 | 2,400 Wh |
| 48 | 200 | 50 | 9,600 Wh |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Battery Capacity Calculator FAQ
Answers to common questions about this calculator.
Multiply by the voltage.
The share of capacity you draw before recharging.
Wh = volts x amp-hours.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.