Dell Original 4 Cell 14.6V 40WHr Laptop Battery for Inspiron 15R 5521, 5537Li ion battery (external) 40 Whr, 4 cell battery Voltage: 14. 6v, Capacity: 2700 mAh Built in circuit protection for device safety 1 year nationwide warranty from DELL. 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

4 cell battery

Voltage: 15

12 Months replacement warranty Warranty of the Product is Limited to Manufacturing Defect Only

1-year replacement warranty

Capacity:6000mAh

40 watt 4 cell battery

1-year warranty

Capacity:3400 mAh

Capacity:7200mAh

Li-poly battery (internal)

Type: Rechargeable Li-lon battery

No more worries about running out of battery power