Dell Vostro 2421/2521/3546 4 Cell Battery-4WY7C / FW1MN / 1C12X / XCMRDLi 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

Input- 100-240v

Type: Rechargeable Li-lon battery

Please match your battery picture with the picture provided by us as there are 2 different types of batteries being used in the same model

Capacity:8500mAh

40 watt 4 cell battery

6-cell battery

Features 6 Cell Battery 3900 mAh Capacity Li-ion Battery

Voltage: 12

Voltage: 14

Capacity:4000mAh

Capacity:6200mAh

Built-in circuit protection for device safety