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The battery power level represents the percentage of the remaining battery
power. The power source indicates whether the unit is being operated
using the battery or the AC power supply. If the battery power level drops
under 15 percent, the Braille Sense U2 QWERTY displays the battery
status on the Braille display, and it announces that the battery has less than
15 percent of its power remaining. If the battery power level falls below five
percent, the Braille Sense U2 QWERTY gives you a warning indicating that
your battery power level is under five percent, and the Braille Sense U2
QWERTY will be automatically turned off in one minute, unless you connect
it to an AC power supply.
Let's explore the detachable battery pack. When the Braille Sense U2
QWERTY is shipped, the battery pack is not installed. This is done to
prevent damage during shipping. When you insert the battery in to the
Braille Sense U2 QWERTY for the first time, the unit may display an
inaccurate battery power level. Before using the Braille Sense U2
QWERTY for the first time, please charge the battery for at least six hours.
You may use the unit during the initial charge, however, it is recommended
if you do, that the unit remain connected to AC power for at least seven
hours to fully charge the battery.
When you remove the battery from the Braille Sense U2 QWERTY, make
sure your unit is turned off; especially when the AC power adapter is not
connected. If you remove the battery while the unit is on and AC power is
not connected, you will lose all data stored in RAM, including open
documents, emails, and contacts or appointments that have not been
backed up. If you remove the battery, and do not have the Braille Sense U2
QWERTY connected to AC power, the data stored in RAM remains for
about 1 hour. To save your RAM data the Braille Sense U2 QWERTY must
be connected to an AC power adapter or battery pack within an hour; or
this data is lost.
[Note, when using CD-ROM/external hard drives]
*When you connect an external CD-ROM drive to the Braille Sense U2
QWERTY, please use the AC power adapter for the CD-ROM. It takes
