Please carefully check your original battery to ensure that the model number is 21CP4/91/91, and battery voltage, battery shape, battery connector position, and screw hole locations match our battery shown below.
| Battery Code: | NASC21N162738WHB2 |
| Battery Name: | 21CP4/91/91 battery |
| Battery Type: | Li-Polymer |
| Battery Volt: | 7.7V |
| Battery Capacity: | 4940mAh, 38.00Wh |
| Battery Color: | Black |
| Battery Cells: | Grade A, 2 Cells |
| Battery Condition: | original/genuine 1 Year Warranty |
| Compatible Battery Models: | [ C21N1627 ], [ 21CP49191 ], [ 0B200-02460000 ], [ 0B20002460000 ], [ 21CP4/91/91 ], |