This is a pretty good deal, a £30 charger that can charge/discharge at a high rate... but wait, it's got a bunch of cool test tools built in as well.
This was supplied by Banggood for review, so here's an (affiliate) link to the product page
A quick look at likely power supplies turned up this pretty cheap one, also on Banggood that would certainly supply a decent amount of volts and amps (although you could get a 12v version if you were looking at running other things from it)
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