I have actually been using this thing quite a bunch. I have a Turbo 30 (Old skool one) and an Orion 3200 and a TrueRC 4000 pack. I follow the directions, hooking things up and pressing buttons, and it seems to charge just fine. My friend that I race with has regular LiPo chargers, and the pack definitely gets shut off before it's fully charged. The 90% figure is spot on, each pack took an extra 10% of their capacity when charged on a lipo charger after they finished with the Losi Converter. I raced 2wd stock and mod (with the TrueRC pack) and truck mod (with the Orion pack) and only charged with the converter. Neither pack had problems running the 7 minute mains we were running. 5 minutes of running took about 1400mAh with the buggy in modified, so the 400mAh I was missing was not a big deal at all.
Hey, for 35 bucks, the thing works. There are cheap lipo chargers out now, but if you don't want to add another charger to your collection, the Lipo Converter works just fune.
KO Propo Supporter