RC-Monster Forums - Soon to be Lithium convert!!!!!

It's been a while since I've been on the forum, new job and other interests took the lead. Well to make it short I ran RC's with my buddy today and foundout my cheap batteries from two years ago that haven't been charged in over a year are shot. I also had a solder weld break so I was running just one battery in my E-Maxx I built. Out of curiosity we took one 7.4v 4000 LiPo battery of his and holy sh*t. That one battery had the same power as my 16cell Tenergy packs I built. I run a 3905 E-Maxx with tons of mods including a MM ESC and a Turnigy 9xl motor with RCMonster heatsink/clamp.Tonite I came home and went to HobbyKing.com and put these items in my basket. 2x http://www.hobbycity.com/hobbycity/s...Charge_Capable and 4x http://www.hobbycity.com/hobbycity/s...idProduct=8578
Not the best but still pretty good bargain for under $200 shipped. Now my understanding is that I can charge two 2-cell packs on each charger at 2 amps on each battery, on each cell. Am I reading this right? At what rate can I charge these batteries? At 2amps how long to recharge if drained?