Charger work perfect, ending voltage is 8,37V, that is very good! USB cable I recommend throwing the trash, because charging current with original cable is ~500ma and with better cable is more than 1A :) But this is detail. Everybody have any USB cable. !!! Unfortunately, the battery capacity is small. Both batteries have approximately the same capacity. I repeatedly measured 890mAh while charging and 800mAh while discharging. I measuring charging by USB tester. Discharging wos measured model charger as imax b6 by current 400mA
Both pictures was recorded during charging. Logger was placed between chargers pin and chargered battery.
very good