The upgraded version of the battery will enter a protective state when used for the first time and requires a long period of charging to activate. It will not fail to charge
Please confirm whether your original battery part number or machine model is correct before purchasing. If you are not sure, you can contact customer service to confirm
Important Reminder : If your device is a 3G machine, please remove the SIM card on the machine while installing the battery. If you do not do this, the device may continue to work, resulting in the battery not being able to charge or not being able to fully charge even if it is charged for a long time