It should allow for duplicating the current levels seen with various drivers to get a better idea of what cells will do in real world application. (I had been disappointed with my earlier hobby charger only discharging at 1amp max.).
So my question is - anybody got one and if so got any hints, tips etc?
Generally it does a fairly good job, but you have to watch out for the connector and the wires, to keep a low impedance. Any resistance in the connector or wires will give a false higher voltage reading.
To get the best battery connection use a clamp, not magnets or cradles.