Electric Bike Battery Amp Hours

The c rating tells you how many amp hours the battery can provide for a very specific period of time.

Electric bike battery amp hours. For example if a 24v 10ah battery pack provides 8 miles of range before it needs to be recharged then a 24v 20ah battery pack will provide 16 miles of range before it will need to be recharged. The benchmark standard of battery in the electric bike industry is a 10 amp hour battery. Amp hours are an indication of the capacity of the electric bike s battery. Watt is the overall measurement of the potential power that can be generated or used.

Meanwhile the same battery may safely provide 36 amp hours for a period of 100 hours. With a battery like that you can go roughly 20 40 miles on a single charge. For large batteries the rating is abbreviated as ah. So for a 10 amp hour battery it will take a 5 amp charger a little more than 2 hours to charge your pack.

Typical voltage in electric bike batteries is 36v 48v 52v and 72v. First an ampere or amp is the base unit for measuring electrical current or load. Amp houris a unit of electric charge measured over a period of time or in simpler terms the potential charge capacity. Watt hour wh amp hours ah x volts v amp hours ah is the amount of current a battery can discharge over one hour.

Understanding these definitions leads us to the question how do these numbers relate to the performance of my bike. This number is an indication of the size of your battery and the subsequent range of your ebike. With a 1 amp charger it will take 10 hours. Watt hours is a way to measure the energy capacity of a battery pack so you know what to expect from your new e bike in terms of range performance.

With a 1 amp charger it will take 10 hours. Or double the amps for half the time. For example charging at 5 amps is fast for a 10 amp hour battery but not so fast for a 20 amp hour battery. The higher the amp hour rating of the batteries and the more batteries that are in the pack the longer the ride time and mileage range of the scooter or bike will have.

You might say to yourself 20 40 miles that s a really broad range but why is that such a broad spectrum. C rate. This means that is supplies 26 8 amps in the duration of 5 hours without dropping off. Volts v the difference of potential that would drive one ampere of current against one ohm resistance.

Should always be listed typically 10 to 20 amp hours abbreviated ah a measure of how many fixed number of amps a battery can sustain for 1 hour. For instance at c 5 a battery might safely provide 26 8 amp hours. To calculate the watt hours wh of a battery pack simply multiply the voltage by the amp hours ah of the pack. For example charging at 5 amps is fast for a 10 amp hour battery but not so fast for a 20 amp hour battery.

A 36 volt 10 ah battery pack has 360 watt hours 36 x 10 360. You might even think of amp hours as the fuel tank or the range for the bike. The larger the battery the safer it is to charge at high amps. Most deep cycle batteries will tell you the ah rating at multiple c ratings.