Yeah, and then some makers of self-balancing boards advertise that their boards are having a Samsung battery inside. ;-)
On the upside, I'm using a Tronic charger as my main charger, and it hasn't failed me so far. It was only 9 Eur, has 4 charging slots for AAA/AA/C/D cells and 2 for 9V's, but I only use 2 at a time because it regularly misses end-of-charge with more than 2 cells inserted due to a lower charging current. It only charges at 1 amp max., but it does so without any problems. I generally didn't have such a bad luck with chargers so far, but I don't have really smart ones actually with various settings, display et al. Oh, wait, I do have one, but that one DOES have a problem with slot 3 out of 4 where the discharge resistor seems to have broken. This is a more advanced Tronic which even has a display, but, as it seems, it's also more prone to failure.