I noticed when I got my Rivas instructions stressed to put the battery on the charger first, then plug the charger into the wall. I've been doing this but am now wondering why and if it makes a difference. I also just got my first mod and bought a multi type charger for those batteries and am wondering if I have to plug/unplug that charger too or if I can just leave it plugged in. (I haven't used it yet and haven't read the directions for it.)