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This high-capacity HP Pavilion dm4-1100 battery is ideal for giving your notebook a long operating life and working on one charge for longer. You won't need to worry as much that the battery will need to be recharged while you are working. The battery meets all quality requirements and is protected against overload and short circuit. Tip: Due to the high capacity (6600 mAh) of this battery, it's larger/thicker than the battery with original capacity.