The Braille Lite M20-M40 User's Manual - Freedom Scientific

The Battery and AC Charger
A Lithium ion battery powers the Braille Lite
M20/40. This battery does not build up memory
and can be charged as often as you like without
affecting battery life or the number of hours on
each recharge cycle. It is not necessary to fully
discharge the battery before recharging the unit.
When you first start the Braille Lite, the battery
should be charged and ready to work. If the
Braille Lite does not turn on, connect the battery
charger to the unit and plug the AC adapter to
the wall outlet to charge the battery. A unit
battery charger is included with the purchase of
your Braille Lite.
If you run your Braille Lite to the point that it
becomes inoperable, leave the charger plugged
in for at least one full minute before restarting
the unit.
Regardless of the amount of battery charge
remaining, it takes four hours to recharge the
Braille Lite battery and there is no danger of
overcharging the unit. Once charged, the unit
operates for approximately thirty hours. When
the battery needs recharging, you will receive a
“Battery Low” message.
WARNING: This unit should only be charged
using the supplied battery
charger. Use of any other adapter
may damage the unit and
8 Part# 440013-001 Rev. D