Hi,
The gauge reading on the Classic is quite different from what
most people would expect. You see, the numbers that represent
the capacity value are not really milliamp values - rather, its
just a calculation based on what the Classic thinks its capacity
is when in fact it is not. It defaults to 33792 because it
doesn't know its "true" capacity; as the battery gets older, this
offset reading decreases by multiples of 256.
To do a recalibration on a Classic:
1. Plug the unit to a wall outlet for about four hours.
2. Check Options/Power to make sure that you see 100%.
3. When the battery meter reaches 100%, go to Options/Support
Information Mode.
4. Disconnect the AC power and, after doing so, from Support
Information Mode, press F. Classic will repeat some things while
battery is being discharged. Leave it for about ten to fifteen
hours until there's no more sound from the BrailleNote (ignore
the battery low or critical message).
After the unit has been discharged, plug it into the wall outlet.
Classic will come up and say, "battery test completed." Then
leave it charged for another two to three hours, and press D from
Support Information Mode to see the updated gauge reading (which
should be way below 32000).
Personally, if the Classic is old and needed battery replacement,
then I expect the "real" gauge reading to be below 30000.
Cheers,
Joseph
----- Original Message -----
From: Carol and Roger <[email protected]
To: [email protected]
Date sent: Tue, 29 Nov 2011 19:09:33 -0500
Subject: [Braillenote] calibrating battery on classic
Hello.
A couple of months ago, I acquired a BN classic which needed new
batteries. Once the batteries were fully charged, the max
capacity was
somewhere around 44,000. Now, the capacity is around 34,000. I
would
not worry about the numbers except for one issue. Now, the low
battery
alert keeps coming on while the battery capacity is about 1.23
and the
end of discharge level is 1.08. About every ten minutes, I get a
low
battery warning. I tried to totally run the battery down, but it
would
only recharge to 33,792. Please, can someone tell me how to get
the
calibration correct?
Carol
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