Recharge cost
Estimate your recharge cost.
Use your own electricity rate. The result is the variable energy charge for one recharge.
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- Stored energy added
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- Estimated wall energy
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Excludes battery purchase cost, standing charges, demand charges and taxes not included in your entered rate.
See the calculation
Stored energy = capacity × (target% − start%) / 100. Wall kWh = stored Wh / charging efficiency / 1,000. Cost = wall kWh × rate.
Efficiency is a fraction in the formula. Standby use after charging and changing tariffs are not modeled.
Charging cost is not financial payback.
This estimates the electricity used in one charging session. It does not determine whether a battery saves money or repays its purchase price.