Dell HK6N5 is a rechargeable lithium-ion battery for a laptop, identified by corresponding Dell spare part number WDK63. Check the model and part number when matching a replacement to your device.
It has a rated voltage of 7.6 V and an energy capacity of 45 Wh. Dell documentation lists a charge capacity of 5618 mAh, and the battery uses a four-cell construction. These specifications describe its electrical ratings and cell configuration for use in a compatible laptop.