When order the 4021 laptop battery, you should open your 4021 laptop, Carefully compare it with your original 4021 battery, checking details such as the battery model, output voltage, connector type, and screw hole positions.
| Battery Code: | NACSQU5254400B8 |
| Battery Name: | 4021 battery |
| Battery Type: | Li-ion |
| Battery Volt: | 11.1V |
| Battery Capacity: | 4400mAh |
| Battery Color: | Black |
| Battery Weight: | 432g |
| Battery Size: | 211.40 x 70.60 x 22.3mm |
| Battery Cells: | Grade A, 6 Cells |
| Battery Condition: | Brand New, Replacement Battery, 1 Year Warranty |
| Compatible Battery Models: | [ SQU-525 ], [ 916C4890F ], |
| Battery Code: | NACBT50032200B4 |
| Battery Name: | 4021 battery |
| Battery Type: | Li-ion |
| Battery Volt: | 14.8V |
| Battery Capacity: | 2200mAh |
| Battery Color: | Black |
| Battery Cells: | Grade A, 4 Cells |
| Battery Condition: | Brand New, Replacement Battery, 1 Year Warranty |
| Compatible Battery Models: | [ BT.T5003.001 ], [ BT.T5003.002 ], [ BT.T5005.001 ], [ BT.T5005.002 ], [ BT.T5007.001 ], [ BT.T5007.002 ], [ LC.BTP03.003 ], [ 4UR18650F-1-QC192 ], [ 4UR18650F-2-QC140 ], [ 4UR18650F-2-QC141 ], [ BT.00403.004 ], [ BT.00404.004 ], [ 916-2990 ], [ 916C2990 ], [ 916-3020 ], [ 916C3020 ], [ CGR-B/423AE ], [ BTP-AS1681 ], [ SY6 SQU-401 ], [ 4UR18650F-QC141 ], |