Lapgrade Battery for Compaq Business Notebook 6820S 6830SVoltage: 14. 4V, Capacity: 4000mAh, 6 cell battery 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 Note: Please match the picture of the battery with your old battery before ordering.

Capacity: 2750mAh

Capacity:8900mAh

capacity- 5300mah

Battery capacity: 2200mWh

Battery Capacity: 4000mAh No of Cell : 6

Max Charge voltage:12

4-cell battery

Battery capacity: 2000mAh

Battery voltage: 11

Battery voltage:14

5amp 50-60hz 3 pin

No of Cell: 4