Hummer H3T User Manual page 8

Turn On the LED Light:
Strobe
Charging USB Devices:
Caution: Only use quality USB cable to perform the
input charging.
Using 12 V DC Output Port:
Caution: Only use provided Cigarette Lighter
Adaptor to perform DC output charging.
Note: Fully discharge the Hummer via USB output
port and recharge to full every 3 months to prolong
its battery life.
Turn Off the Hummer:
When detect no LOAD for 30 seconds, the unit will
turn off by itself. Make sure Jumper cable is NOT
connected to the unit when storage.
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