Dr. Battery MPL05283P-06 4-cell 14.8V 2200mAh laptop battery

Replacement Battery for Dell Inspiron Laptops

This Dr. Battery unit replaces the original power pack in a wide range of Dell Inspiron models including the 14‑inch 3421, 3437, 3442, 14R 5421, 15‑inch 3521, 3531, 3541, 3542, 3543, 15R 5521, 5537, 17‑inch 3721, 3737, 5748 and 17R 5721, 5737. It is built for owners who need a direct‑fit, new lithium‑ion cell to restore mobile operation.

Upgrading from a Depleted or Failed Pack

The jump is worth it when the existing battery no longer holds a useful charge, shuts down unexpectedly or shows physical swelling. A fresh 4‑cell 14.8V 2200mAh unit restores the original runtime specification and the built‑in protection circuits guard against short‑circuit, overheat and overload conditions. Buyers who need higher capacity than 32Wh or a different voltage should look elsewhere.

Limits of the 14.8V 4‑Cell Lithium‑Ion Design

The pack delivers a fixed 14.8 volts and 2200 milliampere‑hours, so runtime scales directly with the laptop’s power draw and cannot be extended without a physically larger or higher‑density cell. The smart control chip manages charging current and safety cut‑offs, but it does not alter the fundamental energy ceiling of the 32 watt‑hour rating. Compatibility is limited to the listed Dell part numbers such as 6KP1N, 6XH00, 8RT13, 8TT5W, 9K1VP, DJ9W6, FW1MN, G019Y, G35K4 and MK1R0.