Hummer H2 User Manual page 9

Q4: What if it doesn't jump start the vehicle?
A4: If the H2 fails to jump start the engine, please wait at least 10 seconds before
attempting to try again and please do not crank the engine continuously for more than 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.
Q5: How many times can the H2 jump start a vehicle?
A5: Approximately 15 times with a 100% fully charged battery.
Actual results may vary due to battery conditions.
Q6: How long is the H2 standby time?
A6: The standby time of H2 is up to 9 months if it is fully charged. It is recommended to
fully discharge the battery via USB output port and recharge to full every 3 months to
prolong its battery life. Result may vary depending on the owner usage and the battery
conditions.
Q7: How long will it take to fully recharge the H2 to the maximum battery level?
A7: It takes about 4.5 hours through the 14V/1A input port. Actual results may vary due
to battery conditions.
Q8: How long will it take to fully recharge a smartphone or USB devices?
A8: The number of times you can recharge a smartphone will vary between different
smartphones and devices. For recharge times, contact your device manufacturer.