Just got a RX pack from an ad here...
described as "used 4 times" and by the picture and actual received item.. looks as good as described.. No problems there...

Unfortunately once I put it on the charger, it only reads as 4 cells, and charged up to 5.78v .. ( I charged at 1.0a) .. I let it sit awhile, .. I then put it back on at 5.0a for a few minutes to see if I could pop it back to life.. no luck... I dishcarged at 0.5a, recharged at 1.6a (its a 1600 pack) ... It still only reads as 4 cells, and tops charge at 5.89v now..

Is it toast?
Can it be brought back? if so, how?

Thanks for any assistance..