I personally did not do the "8 hour" charge time. They stayed on the charger the first time for no more than 5 hours and so far my batteries are going strong as the day I got them. Typical charge time has always been less then 3 hours, I'm pretty sure I get the "blinks" at 2 hours, just usually not paying that much attention. The batteries are 0.81Wh and IF i converted that over correctly its 0.218Ah? I'm not sure if I did that right or not, maybe someone on here can correct me if I'm wrong. I'm pretty sure the equation is Ah*V=Wh (Amp-hours times volts = Watt-hours) so Ah*3.7=0.81 which means Ah=0.81/3.7 so Ah = 0.218Ah or 218 mAh.... If i didn't do that backwards, its been a few years since I've done much math. lol