Lipo Capacity Readings

[westyguesty]

I'm new to lipo's after getting back into rc cars again. I have purchased a few second hand sets that seem to perform OK.
I'm charging them with a Core UAC50, balance leads and the right setting for each pack.

I wanted to test the capacity of them, so hooked them up to my old Ice Deltapeak Charger as it will discharge up to 10 amps, as looks like the Core will only discharge at 1 amp.

The lipos are ok makes, reedy, lrp, speedpower. I have set the cut off to 6v.

I'm getting the following readings,

5300 cells 4072 capacity
4200 cells 2522 capacity
4200 cells 2804 capacity

Am I doing something wrong, or are these lipo's jsut past their best ?

Thanks