Hey guys, When i first got my Reuleaux i used 3 efest 3000 mah batteries and the device won't start and would sometimes start but battery would be empty although they are fully charged. Long story short the solution to this is to connect the device to escribe, open device monitor, remove battery cover, and fiddle a bit with the batteries trying to center the positive crap of the battery to the positive crap of the device, push a bit here and there, and so on and it should work. The battery banks are the worst that i have ever seen, this was corrected in the RX 200 Wismec are idiots because they should have tested all types of batteries, but they did not because they are money hungry losers who thought "Oh if let's just sell it no need for further testing because the consumer is an idiot and we can fix the next batch"... I hope the above method works for your batteries. Stupid Wismec IDIOTS