This is a generic, equivalent one, 100% compatible. This 11.1V 5200mAh Replacement battery is designed to compatible with Dell TT721 WN791 WN979 XD735 XD736.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 11.1V(Compatible with 10.8V)
* Battery Capacity: 5200mAh/6cell
* Chemistry: Li-ion
* Recharge Cycles：500
* Operation Time: Around 1.5-3hours
* Certification: CE FCC RoHS
* Condition: new, 1 Year Warranty!
* No memory effect, Over-charge protection, Over-discharge protection.
* Over-heat protection, Over-current protection, Short-circuit protection.

Compatible Part Numbers:
310-9122, 310-9123, 312-0393, 312-0394, 312-0401, 312-0402, 312-0537, 312-0538, 451-10326, 451-10327, 451-10308, 451-10309, CR160, CW666, CF623, CF704, CF711, DF230, DF249, FF231, FF232, GX047, GR932, HR048, HX306, JT784, MM156, MM158, MM160, MM165, NX618, RW220, TT721, WN791, WN979, XD735, XD736, XD739, YD623, YD624, YD626, YW652, YW670

Compatible with the following Dell Laptop models:
For Dell Latitude D531
For Dell Latitude D531N
For Dell Latitude D820
For Dell Latitude D830
For Dell Precision M4300
For Dell Precision M65

Package Included:
1 x 11.1V 5200mAh Replacement Laptop Battery for Dell TT721 WN791 WN979 XD735 XD736