7.3 Spare batteries
If the batteries are empty or broken, you can replace them with external spare battery which is included in
the set. (See the pictures)
Attaching the external battery
The capacity of the spare battery is 4 working hours.
This spare battery should be charged for 3 hours max.
IMPORTANT! When being charged, spare battery must always be turned on.
Always turn the spare battery off when it is not in use or being charged. If it gets empty completely it cannot
be charged again.