If this is your charger then it is 90watts - http://www3.towerhobbies.com/cgi-bin...&I=LXMAJ0&P=ML

90w/12v=7.5amps

These are some of the cheapest high amp power supplies I've found, and I get my batteries from them. You need to register and log in to see the lowest prices.

Always get the EMS Express shipping and it will take about a week to get.

$50 - http://hobbycity.com/hobbycity/store...idProduct=9205

$40 - http://hobbycity.com/hobbycity/store...idProduct=6879

$30 - http://hobbycity.com/hobbycity/store...idProduct=8592

I'm planning on grabbing the 25a one on my next order, so I can run more than one charger off it.