No Runtime!!!

I have my 13 tooth pinion on the buggy and now I have the same problem as before. Three minutes of run time per pack four or five cells. I think my charger has a setting I can't find. When the 5s1p pack comes off the car is is aroung 9 volts. I have to charge it as a 3 then a 4 then a 5 cell pack on my hyperion charger 610i. This whole process takes less than five minutes until the charger stops. Does anyone know what setting I need to change to get the charger to charge my batts?????

Sorry no pics yet. The track I run at has gone to a 30-35 minute main and I have decided to go lipo of the runtime. Will post pics of the new setup as soon as I get the batt tray I ordered yesterday. If anyone is interested in my old batts just pm me.

[lutach]

That's really odd with the A123. When I was setting my truck for some speed runs, I actually ran it on 10S1P for over 10 minutes and I could've went longer, but it was too fast for the place I was testing it. Have you tried running a different motor?

With the 13tooth pinion on the track I race on with alot of jumps and a 110 foot striaght the buggy will run about 11 minutes on the 5s1p config. It is very fast, but since the mains are from 30-35 minutes long that is a lot of battery changes. I am going lipo to try and find a way to run the main on one or two batteries.

[lutach]

The A123 can go as low as 2 volts per cell and maybe you might be hitting the cut off voltage set in the controller.

When the 5s1p packs come off the buggy they read about 9.8-10.2 volts.
That seems to be in line with what you are saying.