2/3A. There's some excellent battery FAQs on the forums here, not sure if they cover that specific question though. Also, check out
http://www.batteryuniversity.com/ when you've got some time to kill, it's really useful knowing the inner-workings of such a crucial part of an AEG. Plus, you won't have to rely on the frequently-incorrect advice, heresy and old wives' tales that deluge this forum.