The mobile power is stacked on the for Arduino board and powered via the 5V/GND pin. It has a USB-A output interface that you can use to connect to other devices using a USB cable. The charging interface is micro USB, and the charging tool is convenient to obtain (such as: for Android mobile phone adapter). When it is stopped, it is recommended to turn off the power output and let the mobile power supply enter the standby state, thus saving limited battery energy.
It uses 16340 lithium battery (battery not included), the shield works with one or two batteries. Two 16340 lithium batteries (depending on the battery capacity) has about 1500mAH capacity.
Do not buy their products. They are just trying to sell cheap Chinese products which seldom work. No ethics either.
Dear Mr Singh,
As already informed over email to you, these batteries are not drone batteries. These are regular LiPo batteries with a maximum discharge current of 2C, and charge current of 1C. Using them on drones cause irreversible damage to the battery.
Drone batteries have a high discharge rating, and can be found on our store. I am not sure how use of a product beyond its scope by the customer makes our company unethical. Good Luck with your future endeavours.