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A laptop battery is a rechargeable energy storage device, most commonly using lithium-ion (Li-ion) technology, that provides portable power for a laptop computer when it's not connected to a wall outlet. It consists of multiple cells with internal electronics for managing charge/discharge cycles and safety. The battery allows for mobile use, acts as a power backup, and recharges when the laptop is plugged in via its AC adapter.

Key Functions

Mobility: It enables you to use the laptop on the go without needing access to a power source.

Rechargeable Power: The battery stores energy and can be recharged by plugging the laptop into a power outlet.

Power Backup: It provides a power buffer, ensuring your laptop continues to run even if there's a temporary power outage.