Recommendations on temp from promatch racing:

"When using any charger follow the manufacturers recommended settings for charging. If no instructions are available start with the lowest possible peak detection setting (if available) and charge the pack. Check the temperature of the pack immediately after the charger shuts off. If the temperature falls within our recommended settings then leave the peak detection setting there. If it is too low the increase the setting and try again. Continue to use this method until satisfactory results are obtained. Use a charger that was specifically designed to charge NI-MH cells. To verify that the pack is fully charged you should check the temperature. We recommend a temperature reading between 125-130 degrees F when the charger first shuts off. "

I had to mess around with the peak detection setting on my charger so that the packs would charge properly. It seemed like it was set a bit conservatively, which i s probably a good way to start out. I ALWAYS check temperature when charging new packs the first few times, after having my old charger decide to fry one... apparently some chargers will completely "miss" the peak on new packs (however I have not had that problem since getting my new integy unit).