Im not an expert, but there are plenty of the insightcentral forum that do this for fun. They use a super brain charger to cycle the sticks and record the results over 5 cycles. This gives an amp capacity and in many cases just cycling the stick rehabs it into better shape.
Still the load of the super brain is nothing to what it faxes in real life and a bad stick can pass this procedure with flying colors if it has a high internal resistance.