First, we will not fully charge all batteries. Because 100% of the power supply is unsafe during transportation. Therefore, the factory charges a small part of each battery. You must run out of power before you can charge the battery. For example, if the battery level is 5% to 10%, you can start charging. However, please do not let the battery charge at 0% power, as this will cause the battery to go to sleep and require many programs to activate it. If used incorrectly, battery life will be lost. Please operate it correctly to avoid many problems. Of course, if you accidentally leave the battery at 0%, please enter the process of activating the battery, turn off the computer and charge the battery for at least 12 hours, then turn on the computer again to consume the battery power, and then charge again, repeat this step 3 times . If the battery cannot be charged, remove the memory card and battery, and then reinstall. Please use genuine computer charging cables instead of inferior char