Electric bicycle cost calculator
Turn the volts and amp-hours printed on your battery into range, charging time and the cost of a full charge.
How to use
- Copy the voltage and amp-hours from the label on the battery pack, e.g. 48 V and 12 Ah.
- Enter your consumption in Wh per kilometre and the charger's current in amps — it is printed on the charger brick.
- Add your electricity tariff, and optionally the petrol price and km/litre of a motorcycle, to compare the cost per kilometre.
Frequently asked questions
Where do I find the volts and amp-hours?
On the sticker on the battery pack or in the manual, written as something like 48V 12Ah. Multiply them for watt-hours: 48 × 12 = 576 Wh, which is what the calculator reports as 0.58 kWh.
What consumption figure should I use?
Around 6–10 Wh per kilometre for pedal assist on flat ground, and 12–20 Wh per kilometre for throttle-only riding, hilly routes, cargo or a heavier rider. Riding a route you know and checking how much of the battery it used gives you the accurate number.
Can I leave the battery charging overnight?
The charging time here tells you when it should be full, which is the point of calculating it — leaving a pack on the charger for hours afterwards is what most safety guidance advises against. Always use the charger supplied with the battery, and charge somewhere you can see it.
Does the electricity tax change the result much?
Barely, in rupiah: a full e-bike charge is around half a kWh, so 10 per cent PPJ on a Rp 1,000 charge adds about Rp 100. What you feel more is the admin fee on buying a token, Rp 1,750–5,000 per purchase, which can exceed the electricity cost of several charges. The field is still here so the cost per kilometre reflects what you actually pay, on the same footing as a pump price that already includes tax.
About this tool
Electric bicycle batteries are labelled the way the cells are wired — 36V 10Ah, 48V 12Ah — rather than in kWh, so this calculator takes voltage and amp-hours directly and works out the energy for you (volts × amp-hours = watt-hours). From there it gives the cost of a full charge, which for most e-bikes is under a thousand rupiah, the range for your riding style, the cost per kilometre and the charging time from the charger's amp rating. Consumption is the number that varies most: steady pedal assist on flat ground can be as low as 6 Wh per kilometre, while throttle-only riding, hills, cargo or a heavier rider can triple that. Ride a known route, note the drop, and enter your own figure. The petrol equivalent line converts the result into the unit everyone knows: how far the price of one litre of petrol would carry you on the bike's battery.