Usually, an external battery could supply 60% of power to other devices. Approximately 40% of the battery capacity is lost in circuit heat and voltage conversions. A fully charged PowerCore 240000 can only offer 13000-14000mAh battery capacity to your devices.
If the power bank drains quickly when not being used, please try the following tips to see if troubleshooting is helpful or not:
Avoid leaving a USB C to lightning cable in the portable battery when you do not use the PowerCore. The USB C to lightning cable will drain power automatically even though there is no phone connected.
Turn on the "Auto Screen Off". If the mode is off, the screen and MCU will always be in working status, which will consume a lot of power: around 15% in a day (24 hours). Therefore, it is suggested to turn on the option "Auto Screen Off" when you do not need to view the screen display information for a long time.
Charge the PowerCore fully again, do not leave any cables in, and leave it unused for 1-2 days to see if the same issue happens again.
If the power bank drains quickly when charging other devices, please try the following tips:
Learn the capacity of your devices and confirm how many charges the battery can offer to your phone when you're not using the device (when it's in power-saving mode) to see whether it is within the normal range.
Charge the PowerCore fully again, then try a different cable to your device to see if it works better. Do not leave any cables in the portable battery when you do not use the PowerCore.
Try to charge a different device to see how it works。
If the above tips cannot solve the problem, please turn to us for further assistance.
