Answer Posted / tarequl islam mukul

While most chargers have a light that turns from red to green when the battery is charged, some very inexpensive ones don't. The light simply comes on when a battery is in the charger telling you that the battery has connection. These are slow chargers that take about 12 hours to fully charge a drained battery but the charge is slow enough that the battery can be left in the charger indefinitely without harm. If you have the charger instruction sheet it should tell you.

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