The lenmar mach1 isn't much better @ 1500mah. still would take 4.3hrs.
The internal 722 charger charges a 1000mah
thanks fozzy, so about 7 hrs for a full charge on a 6500mah in the 722
Yea, I never run mine down that far so generally after a few hours the top & right will go to solid amber instead of a brief flashing amber. This indicates the unit has stopped charging. I like to unplug the ac for a second and then re-plug it in to top em off. A rough estimate would be for every hour you record an hour of recharge time is required.
I don't know why they make these li-ion charges so underpowered since the technology can handle a 1C charge rating. ie. a 4000mah batt can be charged @ 4000mah, a 6500mah battery can be charged at 6500mah, etc... Should never take more than an hour to recharge a battery no matter what the size.