Products parameters:
* power:38W
* Charge input:5V - 1A
* Lithium battery: 18650 3.7v 4000mAh
* Using time: 3.5/4.5/12.5 Hours
(super bright/bright dimmer/flashing/SOS)
* Material: PP& Electronic components.
instructions:
when charging, use a USB cable to connect the adaptor and emergency light input, 4 lights start to flash accordingly.when the built-in battery is fully charged, 4 lights no longer light up.and it can use for 5.5 hours. when the power led is on, the first light indicate 25% power remaining, the second indicate 50%, the third indicate 75% and fourth indicate 100%.
* when in use , the power display light indicates that the last light is on and the battery is close to the low voltage use state.at the time, to protect the battery it should be stop using.
* frequent use is required, long-time nonuse is unadvisable