... battery, etc. Step of charging: 1> Put the light on ground, back side is upturned. 2> Take out the ... , there has a + and mark on both of light and charger, face + to + and to -. 3> Connect the USB wire ... charger instead.When it is succeed charging, the light on ellipse charger is GREEN, and when it is ... full charger, the light on ellipse will turn RED. Li battery in recharge series ...