Lapgrade Battery for Dell Inspiron 17(3721) 17(3737) 17R(5721) 17R(5737) SeriesBattery Voltage: 11. 1V, Battery Capacity: 4000mAh, No of Cell : 6 Built in circuit protection for device safety 1 year replacement warranty. A guided assurance on compatibility Get confirmation on chat support within seconds 15 days easy replacement BIS certified product ensures standardization and quality of product

No of Cell :6

31amp 50/60hz

1-year warranty provided directly by the DELL's authorized service center

Li-ion battery (external)

Battery capacity: 37Wh

Voltage: 7

3 cell battery

4 Cell Battery-4WY7C

Battery voltage: 11

Features 6 Cell Battery 3900 mAh Capacity Li-ion Battery

Capacity: 2600 mAh

Capacity: 4000mAh