It would also seem like the pack was coming alive on the second charge up...... So 1C cycle to wake it up, and then close to the max C possible to get the best Performance... That's worth a try , but you can quickly realize how much more Work needs to be done to get better chargers out there to meet the potential of these competion(7200mah) lipo packs ... Like I said before, we'll need 100+ amps chargers and power supplies to meet that demand ! Right now those 40amp chargers can only meet the potential of a TP 3300mah 65C pack(12C charge rate)......