Hummer H24 User Manual page 10

Q5: Will reversing polarity connections of the jump start cable damage the vehicle?
A5: Not at all, Hummer is very safe with "Dual Reversing Polarity Protection". If you
accidentally connect the RED and BLACK cable clamps to the wrong polarity terminal
and attempt to jump start the vehicle, both the (12V Indicator)and (24V Indicator) lights
will be flashing rapidly. The Reverse Polarity Protection will be in place and cut the
power immediately to prevent injury and avoid damaging the vehicle.
Q6: What if Hummer doesn't jump start the vehicle?
A6: If Hummer fails to jump start the engine, please wait at least 10 seconds before
attempting to try again and please do not continuous cranking for over 5 seconds each
time. If still not succeed after 3 attempts, it may be due to other problems of the vehicle.
Do not try to crank the engine continuously for more than 10 times in a row. It is also
highly recommended to replace the vehicle battery once every 2-3 years.
Q7: How many times can the Hummer jump start a vehicle?
A7: Approximately 10 times with a 100% fully charged battery. Results may vary
depending on user usage and vehicle engine displacement.
Q8: How long is the Hummer standby time?
A8: The standby time of the Hummer is up to 12 months if it is fully charged. It is
recommended to charge the Hummer every 3 months to prolong its service life. Result
may vary depending on the owner usage.
Q9: How long will it take to fully charge the Hummer to the maximum battery level?
A9: It takes about 8 hours.
Q10: How long will it take to fully charge a mobile phone?
A10: It will take about 1 hour.
Q11: How to turn off the Hummer ?
A11: The Hummer has an auto turn-off feature. Once the connected electronic device
has been fully charged or no load to the charger, the Hummer will automatically stop
charging and enter into sleeping mode.