36v Dorado lithium ion battery Discharge and charge port: USB port and battery indicator: 1. As a rule of thumb, bigger battery size (capacity) means more distance travelled (range). Therefore, battery capacity is an important specification for an electric bike. Capacity is most often stated in...
Electric bike battery size -- How is it measured and what does it mean?
1. As a rule of thumb, bigger battery size (capacity) means more distance travelled (range). Therefore, battery capacity is an important specification for an electric bike. Capacity is most often stated in amp hours (Ah). Some manufacturers describe capacity in watt-hours (Wh). In order to compare apples with apples, you will need to divide the watt hours figure by the battery’s voltage (V) (which is also usually stated prominently in the e-bike’s specifications). The majority of modern e-bikes run on 36 volts. As an example, an e-bike with a 36V/400wh system from Bosch has 11.6Ah.
2.What sizes are available? Some manufacturers offer big 17Ah batteries (like our Kalkhoff Agattu). Other e-bikes will have smaller batteries (the light and beautiful Faraday Cortland has just over 7Ah).
In practical terms, a smaller battery is sufficient for those people who use their bikes for shorter rides. Bigger batteries are best for those who have a longer commute, enjoy extended weekend bike outings, or like to use a little more help from the motor.
What if a battery reaches its maximum number of charge cycles?
1.The maximum number of charge cycles specified by the manufacturer in fact corresponds to the number of recharging cycles that a battery can theoretically undergo without losing too much efficiency.
2.At the end of the specified number of cycles, its performance will be reduced and it will hold its charge for a shorter time. It is up to you to judge, depending on your use, whether a replacement is necessary or whether you can get by.
-----A battery wears out even if it isn't being used
The energy it has stored escapes gradually: this is called 'self-discharging'. If it remains completely discharged for a long period of time, irreparable damage can occur due to chemical reactions inside the battery. Refer to your battery's user manual for information on what to do if you do not intend to use it for a period of time. Recommendations vary depending on the type of battery.
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