Lithium Battery Charger Charging Process

Mar 12, 2026|

The charging process of a lithium-ion battery charger mainly consists of three stages: pre-charging, constant current fast charging, and constant voltage float charging. Precise control of current and voltage ensures the battery is fully charged safely and efficiently. The entire process is automatically managed by the charger's built-in intelligent chip, requiring no manual intervention.

 

When power is not connected, the LED on the circuit board is off.

When power is connected to the circuit board, the green LED remains lit, indicating the circuit board is waiting for the lithium battery to be inserted.

After the lithium battery is inserted, charging begins, and the LED turns orange.

When the lithium battery is fully charged, charging stops, and the LED turns orange.

Once the lithium battery is fully charged, it is removed, and the LED turns green again, awaiting re-insertion for charging.

During the charging process, the charging percentage will be displayed.

LED Indicators:

Continuous Green: Waiting for battery insertion

Continuous Yellow: Charging in progress

Continuous Orange: Battery fully charged or charged for 6 hours

Blinking Orange: Warning message (output short circuit, reversed polarity, abnormal temperature)

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