20 US-EN
Check the product before every use! Discontinue use
if any damage to the product or the charging cable is
detected!
Sudden temperature changes may cause condensation
inside the product. In this case, allow the product to
acclimate for some time before using it again to prevent
short circuits!
Do not operate the product near heat sources, e.g.
radiators or other devices emitting heat!
Do not try to open the product! It has no internal parts
requiring maintenance.
Safety instructions for built-in
rechargeable batteries
Failure to observe the following warnings may