Well, same specs as the LG HE2 which took about 3-4 hours to charge in mine with a 500mah adapter (
batteries were around 3.4-3.5v). I have a Nitecore D2 now which also charges at 500mah, and my new Samsungs i got a few days ago took about the same time outta the box (they were at 3.6 or so). My MC2 is my backup so probably won't really charge the Sammy's in it., but I forgot it can do 1A charging til you posted this...