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ANNA-LISA Manual - Version 1.1
CHAPTER 3: Installation
Charging the battery
The battery ‘LEVEL’ led should be green. A yellow or red led indicates low level and
requires charging the battery.
To charge the battery switch off the device and and connect it to an external USB
power supply or USB computer port.
NOTE
If the battery is empty the device can be operated with an external USB power
supply. The battery can only be charged when the device is switched off.