The Dell CRT6P is a rechargeable lithium-ion spare battery for a notebook, providing portable power when you use a compatible model away from a mains supply. This is the nine-cell variant, identified by manufacturer part number CRT6P.
It has a charge capacity of 8550 mAh, a rated voltage of 11.10 V and an energy capacity of 97 Wh. The battery is black; one battery is listed per sales unit. These specifications identify this CRT6P variant.
The opened product listing names the Dell Latitude E6440 as compatible, while Dell battery documentation pairs CRT6P with part reference 71R31. It can serve as a spare or replacement power source for the listed notebook, supporting mobile and everyday use without a fixed power connection.