38WHr 3-cell lithium-ion

Dell 09P4D2 is a three-cell lithium-ion battery for a laptop, providing stored energy when the computer is away from its external power supply. The part number identifies this specific battery variant for catalogue and replacement reference.

Its stated energy capacity is 38 Wh. This describes stored energy, not power output or guaranteed runtime; actual operating time depends on the computer and how it is used. The three-cell lithium-ion design identifies the battery’s confirmed configuration.

It is intended as a laptop power source. Voltage, capacity in mAh, connector details and a compatibility list are not specified, so check the part number when identifying a replacement.