UTOK 500Q HD User Manual page 18

Don't dismantle or modify the battery.
·
Don't expose battery in an occasion with strong mechanical
impact, or use a hard object to penetrate the battery.
·
Phone should be put in a cool and dry place to keep battery
away from the direct sunlight. It should not be placed
with a high temperature (over 60 Celsius degrees)
environment.
·
If battery gives out any peculiar smell or getting
overheated, you should stop using the phone.
·
If the battery is found to have any crack, deformation,
damage of other type, or electrolyte leakage, the
phone should be stopped using immediately.
·
Please clean your skin or clothes immediately with soap
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