User's Manual

BrailleNote Apex QT User Guide
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2.1.2 Checking Power Status.
You can check the state-of-charge of the battery and whether the AC adapter is connected from
anywhere in KeySoft by pressing FUNCTION with O, then P.
First, the battery state-of-charge in percent is displayed: “Level c percent,” where c is the battery's
state-of-charge.
Then the AC adapter status is displayed: "Adapter (status)," where "status" is either "on" or "off."
After these messages are displayed, you are returned to your original place in KeySoft. To clear the
battery status message from the Braille display, press ADVANCE.
2.1.3 Battery Care.
Like all rechargeable batteries, as the BrailleNote QT battery ages, its capacity reduces. The battery
is designed to provide approximately 300 charge cycles before seeing a noticeable reduction in
capacity. To optimize battery life, it is recommended that you only recharge when the battery is
nearly depleted, followed by a full recharge. Note: to protect the battery and reduce the number of
charge cycles, the battery will not recharge if you start recharging a battery that is almost fully
charged (above 90%). Please contact HumanWare to obtain replacement batteries.
2.1.4 Battery Replacement.
The removable battery is accessible from the underside of the BrailleNote QT. While keeping the
thumb keys in front of you, flip the unit to the side. Near the center of the underside is the battery
latch. It has three raised ridges. To remove the battery, apply pressure to the latch and push to the
right. The battery, located just above the latch will raise. At this point you can remove the spent
battery.
The new battery can only be inserted the correct way. It is rectangular in shape. There are two tabs
along one of the long edges. We will call this the top edge. There is a protuberance on one of the
short edges. This protuberance only fits at one place in the battery opening. This is the right edge of
the battery.
To insert the battery, find the proper battery orientation. Insert battery's top edge first, then lower
the battery into the opening. The protuberance on the right side should fit into the corresponding
opening. The battery should snap into place. If there is any resistance, you likely have the battery
upside down.