This charger has worked well with my POS 8.4v 1150mAh and my Intellect 9.6v 1200mAh batteries. Very simple, and relatively quick.
Both batteries became slightly warm, but not by much. I haven't left a battery hooked up to it for more than 5 minutes after the charger indicated that they were done charging, so I'm not sure how well it works with overcharging batteries, but if you pay attention, it's an outstanding simple charger.
I'd recommend this to casual or new airsofters.
-Comes with Alligator Clips for car-battery charging
-Large to mini-adapter
-Red/Green light is easily visible
-none, considering the price and what it's built to do.
Rating: [5 of 5 Stars!]