Compatibility-first battery group for Acer Aspire 3820, Acer Aspire 3820T, Acer Aspire 4820, Acer Aspire 4820TG, Acer TimelineX 3820. Verify old battery label, voltage, and connector before final confirmation.

ACER 3820 is listed for Acer Aspire 3820T. We will reconfirm the old battery part number, voltage, connector, and shape before processing.

4,400 mAh6 cells10.8V

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Battery is swollenOnly works while plugged inShuts down soon after unpluggingNot charging or percentage is stuckVery low backup after a full chargeBattery is not detectedOther problem

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