What does “Amp Hours” (or watt hours) mean?
Back to top of FAQ Amp hours (AH or Ah) is how battery capacity is measured. Technically 1 amp hour means 1 amp of current for 1 hour of time. For perspective, a typical small electric vehicle battery will range from 5 AH up to 15 AH. To figure out what this means, you need to know how much current your EV will draw (in amps) and how long you will ride. For example, if your electric vehicle (EV) draws an average of 5 amps, then a 10 AH battery would allow you to ride for 2 hours (5Amps x 2 hours = 10 Amp Hours). In our own experience, when using a moderate electric assist on our bikes, on semi-hilly terrain, we use about 5AH for every 10 miles travelled. Note that the true power you get out of an electric vehicle depends not only on amps, but also on the voltage. A better measure of power is based on watts, which is just current (amps) times voltage (volts). This is the common unit of measure for things like light bulbs. So a 100W light bulb would, for example, draw 1 amp at 100 volts
