Thanks for the heads up on the safety issue but almost all chargers are allowing some voltage regulation by the user. Our local tracks rules is 4.22 per cell and in carpet oval racing everything matters. Off-road or most any other racing I would agree it wont matter but in oval it might. For the price of this charger I feel that it should work like it says it will. Just wondering if it was just my charger or if they are all that way. Right now I have a GFX that will charge to whereever I set it so that at each track you can set your charger to the voltmeter they are using that day. Guess I will just stick with that charger.