Using Manual Override on GBX155
Boost X is designed to jump start 12-volt lead-acid batteries down to 2-volts. If your battery is below 2-volts, the Boost LED will be "Off". This is an indication that Boost X can not detect a battery. If you need to jump start a battery below 2-volts there is a Manual Override feature, which allows you to force "On" the jump start function.
Using Manual Override will not provide any additional power.
To activate Manual Override: Press and hold the Manual Override Button for 3 seconds until the Charge LEDs start to chase.
WHEN USING MANUAL OVERRIDE ALL SAFETY FEATURES WILL BE DISABLED.
Watch the video below to learn more.
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