19
4.2 Using the optional Power Pack
1
Attach the Power Pack to the
Charger Case and lock it.
2
Plug in the micro-USB and connect to an external power
supply. The Power Pack and hearing aids will be charged at
the same time. While connected to an external power
supply, the Power Pack indicator light will show the
current battery charge status.
Before using Power Pack for the first time, it is
recommended to charge it for 3 hours.
The Power Pack contains a built-in and non-
removable rechargeable lithium-polymer battery.