Best damn balance charger I ever had

[nativepaul]

Originally Posted by mistercrash

I'm thinking that your GT Power GT8 did actually charge your cells to 4.2V but they simply got down to 4.18V quickly after the charge is done. Cells that are a bit tired because of repeated over charge might do that.

No, it's just a cheap Chinese charger with poor quality control, they hadn't calibrated the internal voltmeter before it left the factory and it was reading slightly high. It's just a cheap Chinese charger with poor quality control, they hadn't calibrated the internal voltmeter before it left the factory and it was reading slightly high. Voltages were measured immediately after charging completed so any self discharge was negligible, and that was the only charger I had charged the packs with, so they had been undercharged repeatedly not overcharged ever, it was only when I put a calibrated voltmeter on it and realised it was undercharging that I bought a replacement charger for it with an adjustable terminal charge voltage.

Because of inaccurate chargers like this, and that for every charger that reads high and charges low like mine did, there is probably one that reads low and charges high. LiPos are speced to 4.2v/cell +/-0.05v

4.23v/cell will reduce cycle life over 4.2v, just as 4.2v over 4.1v does, but also gives more mAh and is within LiPos spec and the rules I race to, I wouldn't do it to my sport packs as I want to last forever, but there are better race packs out every year that pretty much force an upgrade at least every other year so race pack cycle life is not so important. I wouldn't mind betting that if everyone registered on here measured their voltages someone would be charging at least 4.23v/cell due to an inaccurate charger with a nominal 4.2v/cell.