Exactly what I was trying to warn you about, guess I’ve failed again. What you suggest might be possible, but not very practical. Under load it might work, as long as the switching noise doesn’t cause stability issues…switch mode supplies are inherently unstable, why they always need some load, built in or added. But under no load the output voltages probably won’t match up exactly, causing a lot of current between the two, something has to give… and let out the magic smoke. Unless the built in load I mentioned is enough to save the day, but it is risky.

At best you would end up with a $50 10 amp supply with no warranty, when for essentially the same cost you could have had a 20 amp supply and kept the warranty. This is why some of us say you get what you pay for, but we’re always told we’re full of it. OK, rant over.

And I can’t believe I’m defending dear ol’ Uncle Ernie (Trinity), actually I’m not, but at least the I-balance charger does have a built in supply so it’s not quite a fair comparison. Still pretty pricey, plenty of fine options cheaper than that I agree.