Electric Bike Charging Cost: Units per Charge and Monthly Bill
An electric bike uses about as many units (kWh) as its battery holds, plus a little charger loss. Below is the simple way to work out units per charge and your monthly bill, using real battery sizes.
Updated 11 November 2026
How many units does an e-bike use per charge?
Units per full charge = battery kWh + about 15% charger loss. Battery kWh = volts x Ah / 1000.
- 60V 20Ah = 1.2 kWh, about 1.4 units
- 60V 30Ah = 1.8 kWh, about 2.1 units
- 72V 30Ah = 2.16 kWh, about 2.5 units
- 72V 45Ah = 3.24 kWh, about 3.7 units
Most electric scooties and bikes on sale in Pakistan carry 1.6 to 2.7 kWh packs, so a full charge from empty takes roughly 2 to 3 units.
Battery size of popular models
- Jolta JE-70L Electric Bike: 60V 30Ah lithium, 1.8 kWh, about 100 km claimed
- Evee Gen-Z (Lithium) Electric Scooty: 2.07 kWh lithium, about 80 km claimed
- Yadea T5 Lithium (T5L) Electric Scooty: 72V 30Ah LFP, 2.16 kWh, about 130 km claimed
- Crown Electric Raftaar Pro Electric Bike: 73.6V 60Ah LFP, 4.4 kWh, about 160 km claimed
A bigger battery takes more units per charge but also goes further, so the cost per km stays close.
Monthly electricity bill formula
Monthly units = (daily km / claimed range) x battery kWh x 30, plus charger loss.
Example: you ride 40 km a day on a 2.2 kWh scooty with a 100 km claimed range. That is about 0.9 to 1 unit a day, or roughly 27 to 30 units a month. Multiply by the per-unit rate printed on your own electricity bill.
Real range is often 20 to 40% lower than the company claim, so use a lower range figure if you ride fast or with two people.
Charging at home, at work or on solar
Almost all e-bikes in Pakistan charge from a normal 220V socket with the charger that comes with the bike. Public charging points are still rare; the NEV Policy plans 3,000 public stations by 2030 and fixes the commercial charging tariff at 39.7 rupees per kWh.
A home solar system can charge an e-bike through the inverter at 220V. A daily charge of about 2 kWh needs about that much solar output each day.
Ways to keep the cost low
- Use only the original or brand-approved charger (Metro FAQ).
- Do not run the battery flat again and again.
- Choose a lithium (LFP) model if you ride daily: it charges faster and its battery lasts longer, see lithium electric bikes.
- Keep tyres at the right pressure and avoid carrying more than the rated load.
