need a simple lipo charger..
my existing charger blew off a couple of days ago.

i have the power supply

Well you can either go with:

SIMPLE: http://www.quadkopters.com/product/b3ac-charger/
OR
IMAX B6: http://www.quadkopters.com/product/imax-b6-charger/

I have turnigy one which doesn't require a power supply adapter . Its got a built in adapter . Its a lipo 2-3s only balance charger . PM me if you are interested

I can recommend the Turnigy Accucell 6 charger from HobbyKing. I've had two of them for around 4 years now and they both behave faultlessly. One is on my workbench and the other I use from the car when I go flying. I also have 2 Imax B6 chargers. One a fake copy and the other the real thing. The real Imax decided to stop charging anything over a 2s battery, but the fake is still going strong. I'd be inclined to leave the small charger and opt for one with a digital display. They are more versatile and you can actually watch what each cell is doing during a charge. You'll find the digital display types often use the same chips internally so there's little difference between them except one of looks.  ... Stu