The charging time of a lithium battery varies depending on a variety of factors, such as the type of battery, its capacity, the charger current, and the state of charge. If we take the lithium battery of electric vehicles as an example, then the charging time is usually 3~5 hours. But if it is the first charge or if the battery is completely discharged, it may take longer, about 8~10 hours. However, it is not recommended to charge for more than 12 hours in any case, as too long a charging time can cause permanent damage to the battery.
Besides
The current size of the charger will also affect the charging time. For example, for 48V/20A lithium battery, if the charger is 5A, then the charging time can be a little longer, about 4 hours; And if it is a 10A charger, the charging time will be reduced to just over 2 hours; A 20A charger can only take about an hour.
During charging, as a rule,
It is recommended to charge the battery when there is about 70% left rather than waiting for the battery to be completely discharged. When the charger indicator changes from red to green, it is usually recommended to charge it for another 1~2 hours to make sure the battery is fully charged.
In general, in order to ensure the safety and performance of lithium batteries, charging should be carried out in accordance with the instructions of the battery and charger, avoiding overcharging or discharging, and choosing the appropriate charging time and method according to the actual situation.