7.6V 2200mAh, each battery can last for 35 minutes.
If the battery is squeezed, it is forbidden to be used again.
Do not use the battery in the rain or a humid environment, as this may cause the battery to self-ignite or even explode.
Do not use a high-power charging head for charging - it may explode; If you use a charging head lower than 5V, charging will be too slow.
Do not use a USB port to charge the battery, such as a computer, car charger, etc. Since these power sources are not stable enough, they may damage the battery.