[nativepaul]

I haven't used that one but the 20A version is pretty popular over here but I bought one and it burned out charging a 12v battery at 5 amps, got a replacement and while it works it starts smelling bad if I charge a 2s pack at over 2A and smokes if I charge a 4s pack at 2A so I don't use it. and I'm not the only one thats had bad experiences with them, I know someone that went through (all operating at well under the speced power) 5 and lost a charger before he gave up and got something decent.

Personally I'm not up to making a PSU myself but id much rather use something that runs cool well within its limits but was designed for a different purpose and adapt it to my needs, than something that is designed badly for purpose, insurance may replace my TV and sofa but doesn't cover the thousands of hours I've put into designing and building my models, or my photo albums.
Having had 2 from the same manufacturer I wouldn't touch it with a bargepole, if you dont want to build or addapt something to suit your purposes, it is well worth saving a bit more and buying a quality bench power supply like a maas sps-9400 which is the 40A PSU Shulze recommend for their chargers and reviewed on Fastelectrics.net