It is a 4 cell pack, 1100mah. Very unlikely a cell is shorted (particularly since Hitec checked the pack).

I can't cycle the pack due to the diode in the charge circuit. I also can't check the pack voltage directly without opening the unit (which I do not feel compelled to do - since it is doing better these days).

I can only confirm that the battery pack seemed to self discharge pretty quickly as others have noticed. When I recharged the pack using my Victor Engineering charger (set at 100ma) the pack voltage was below 4 volts for a minute or two (on at least two occasions). The Victor is quite accurate and none of my other packs behave this way.

I forget what the peak voltage was. Next time I charge the thing I will look. As I recall, the peak voltage was in the 5.7-5.9 volt range.

Also, these batteries don't seem to peak detect well at 100ma charge current. I usually set the charger for 16 hour charge time and walk away. One day I will probably fast charge the cells and see if they peak detect reliably - but right now I'm trying to get the pack to behave so I will stay with ~ C/10 charge rate.

I have only had the programmer for a few months. Like I said, the battery pack seems to be improving. One day, I will break down and replace the battery with a Sanyo pack (I'm not sure of the cell size or pack configuration but Batteries America can make one if necessary).

Like I said, it is a very handy little tool. The next plane will have two rudder servos so I will be doing some programming to get them matched up.

Moses