DELL CGMN2 50Wh Battery for Inspiron 11 (3135 / 3137 / 3138) 4 Ce...

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genuine or compatible internal battery. As with most internal batteries, it is not hot-swappable and requires you to open the laptop's chassis for installation. Part Numbers: The primary part number is CGMN2 (also seen as 0CGMN2). Other compatible part numbers include N33WY, 0N33WY, NYCRP, P19T, P19T001, P19T002, and P19T003. Technical Specifications: The CGMN2 battery comes in a few variations, which you should verify before purchasing. Voltage: The most common voltage is 11.1V, but some sources also list 11.4V. These voltages are generally interchangeable. Watt-hour (Wh) Capacity: The most common capacity is 50Wh. Some listings also show a 40Wh version. Milliampere-hour (mAh) Capacity: The mAh capacity for the 50Wh battery is typically around 4336 mAh. For the 40Wh variant, it's around 3600 mAh. Number of Cells: This is a 3-cell or 4-cell battery, depending on the specific model.