I correct what was said. I have mounted two new 1100 mAh batteries, in my two Go950 devices and they do not last 3 hours 40 minutes, in fact, they do not even come close.
Fully loaded and placed in the window, so that they receive the satellites and, although without driving, they barely arrive at two hours, being that the two devices are unloaded at the same time. They both last exactly the same and go through the same phases. I have carried out several tests and, in some, every 30 minutes I have been careful not to activate the auto-off, but it is indifferent, one way or another the new batteries do not arrive at two hours, although they exceed an hour and a half and that. they are of good quality, as they are Cameron Sino.