Battery | Range | Uphill | Charging Time

E-Bike Charging Time Calculator

Calculate the charging duration for a battery of an e-bike. The battery size in watt-hours (Wh), the charging current in ampere (A) and the charging voltage in Volts (V) should be indicated at the recharger or in its manual. The charging of the battery is somewhat constant up to a charge level of 80%. After that, the charging will become considerably slower. So if you enter a target above 80%, the calculated time will be too short.
Please enter the first three values and change level of charge and charge target to fit your needs. The charging time in hours and minutes will be calculated. The calculated value is a theoretical minimal value, practically it will take a bit longer.

Battery energy:
Charging current:	A
Charging voltage:	V
Level of charge:	%
Charge target:	%

Example: a battery with 350 Wh should be loaded from 10 to 80 percent. The recharger charges with 2 amperes and 36 volts. So the charging time will be almost 3 1/2 hours.

Electric motors with lithium batteries are a relatively new invention, which is not yet fully developed technically, so they have become better and better in recent years and further improvements are to be expected in the future. This is the situation in the 20s of the 21st century. The slower charging from 80% is less relevant for newer models than for older ones. An increase in the possible charging voltage and thus a shorter charging time for newer models can also be expected.
It is not advisable to store the battery for a long time without being used and fully charged, as this can have a negative effect on its ability to store energy. It is best to store it between 50 and 70 percent of its charge level. Research is also being carried out on this, so time will tell whether this will also apply to future models.
Batteries are best charged at a temperature between 10 and 25 degrees Celsius. You should also not run them completely empty if possible, but only to about 20 percent.