Question about Audio Players & Recorders
Posted by Anonymous on
SOURCE: why my 28v doesn't fully charge
One or more cells of the battery have gone bad. The technique of measuring the state of charge of the battery is VERY limited.
I would recommend letting the battery cool after charging... THEN in a day, charge it again without using it. Do this for several days and see if the battery improves. If not, time for new battery.
DO NOT discharge these batteries beyond the point where the tool starts to slow down. You will reverse charge the weakest cell from the ones still deliveing power and the reverse charge will permanently damage the weakest cell.
Posted on Nov 26, 2009
I have the MDR-RF970R but I bet the battery is the same. If you have had the headphone for seceral years then I bet you are right, the battery is going. You might try using them till the battery dies and then recharge. This is called deep cycle and may time it will extend the life of rechargables.
If the headphones are new, then just check and make sure that they going all the way into the charge slot.
I will say it is not common for me to see the light off, but I use the headphones all the time.
Posted on Sep 20, 2010
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