i was waiting, on pins n needles, for mooch's test of this charger. the other top charger, the dragon, failed, it has bad internals. bad soldering, etc. but, mooch found no problems with my costly charger, even better, he found the testing stuff, IR etc., accurate. that's super because i had no way to test for that, but that's why i bot this thing. the only problem he found was the difficulty of use, yup. you gotta be a programmer to get full use of this, still, i'm slowly learning this machine,.