Got it and yes you have the 3yr/300 cycle warranty on them. As far as the voltage from 4.19 to 4.20 that more than likely could be just your charger. If your really concerned check the cell voltages with a good quality volt meter, that'll give you more accurate readings. But as I said that little tiny bit of voltage difference isn't anything to be worried about. As for how you feel the packs are performing compared to packs that you have been running, well give the new packs a few runs. It's normal for Li-Po's to take around 6 cycles before they reach their full potential. If you feel you still have an issue feel free to contact [email protected] or call him at 1-888-654-4450 on Monday and he can help you out. Josh Handles the East coast RMA issues. But from what I'm hearing so far there appears to be nothing wrong at this point other than some minor concerns that I feel I have addressed fairly well at this point.

Have a good weekend.

Jason