Dr. Battery MPL05283P-02 4-cell 14.8V 2200mAh laptop battery

Replacement battery for Dell Inspiron models

This 4-cell lithium-ion unit replaces the original pack in Dell Inspiron 14, 15 and 17 series laptops including the 3421, 3521 and 5749 families. It delivers 14.8 volts and 2200 mAh for direct drop-in compatibility. Buyers who need a higher-capacity pack or a different voltage should look elsewhere.

2200 mAh capacity and 32 Wh energy rating

The pack supplies enough headroom for typical office tasks, web browsing and video playback on supported Inspiron chassis. Runtime will shrink under sustained heavy loads such as gaming or rendering, where the 4-cell design reaches its limit faster than larger 6-cell or 9-cell alternatives.

Lithium-ion chemistry

The built-in smart chip manages charging current, prevents short circuits and guards against overheat and overload conditions. It operates within the standard lithium-ion voltage window, so it cannot be used in systems that require a different cell chemistry or external battery interface.