EV Charge Cost Tracker

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Create your account the first time. Use the same account on your phone and computer.

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Monthly summary

Choose month

Energy added to battery0 kWh

Estimated electricity cost£0.00

Charging sessions0

Outstanding balance£0.00

Outstanding balance is the total recorded charging cost minus all recorded repayments.

Energy added per charge

See how much energy went into your battery in each session this month.

Your charging chart will appear here when you record a session.

Each bar represents one charging session. Values show estimated energy added to the battery, in kWh.

Record a charging session

Charging date Tariff used

Choose the rate that best matches when you charged. Since the start and finish times are not recorded, mixed day/night sessions cannot be split automatically.

Battery before (%)

Battery after (%)

Battery capacity (kWh)

Charging loss uplift (%)

The loss uplift estimates electricity taken from the house above the energy stored in the battery.

Notes (optional)

Charging sessions

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Record a repayment

What are you paying for?

Choose an outstanding session to fill in the full amount due automatically.

Payment date

Amount paid (£)

Notes (optional)

Repayment history

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Electricity rates

Day: 26.85p/kWh — 07:00 to 00:00

Night: 9.33p/kWh — 00:00 to 07:00

For each new session, select the day or night rate that best matches the charge. Because start and finish times are not recorded, a session spanning both rates cannot be split automatically.

Account settings

Your profile details are saved privately to your account.

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