Phone & Device Charging Cost
Work out what it costs to charge a phone, tablet, laptop or e-bike battery per charge and per year, free online.
About this calculator
Cost per charge = battery energy (Wh) ÷ charging efficiency × electricity price. A 5000 mAh phone battery (19 Wh) costs about half a cent per charge — roughly $1–2 a year. Laptops and e-bikes cost more. Enter how many full charges you do each week.