leak testing loop with 7.2v battery

[red eye]

Right my old psu has given up the ghost while attempting to bleed my new loop. Computer repair shop down the road have no cheap genric psu's.

But I do have a 7.2v battery or two for my rc cars, would this be enough to power a 10w lilang ddc to bleed and leak test?

 

[red eye]

no random adapters well nothing 12v although I can pull out the back up lead acid from my alarm system.

edit
god and bad news. the good just kicked the psu now its working....the bad, the ddc is quite noisy I also have to rethink the inlet and oulet for the tube res. top inlet and bottom outlet is sending airbubbles though the loop

 

[red eye]

CNice one khemist that psu looks like ie will be handy and better then a pc psu (leSs wires) I'll be getting one of them when I find one.

Divx, only way I can fit the res in my cm690 is to have it hanging from the rad by the hose.
I can stop the the water fall sound effects by filling the res right to the top. But I have bubbles that will not budge. I need some sort of tube