hey guys, just want to ask a bit about the aw imr 18650 3.7v 2000mAh. i bought one 2 days ago and used it straight on my vamo.i remembered reading the battery's power at 4.0 and it lasted me around a day and a half maybe before my vamo says low power.i charged it on a trustfire multicharger for around 3-5 hours before the led turns green.problem is,when i put it back in the vamo, it reads around 3.7v only.i tried charging it for a couple of minutes more,but the led on the charger still flashes green and i'm afraid that maybe i have overcharged it.could anyone comment about this.i'm trying to maximise the usage of this battery and not buy a new one in just a couple of months just because i overcharged it.thanks 