Checking capacity of old/used rechargeable batteries

I have some older/used rechargeable batteries (1,2V to 12V - 300 to 2400mAh). I do not find a VM kit to check it. How can i check the individual capacity of each of them (without to use them in an application because most needed 2 till 8 batteries together) before i throw them away? Thanks - Koen.

You can’t …
The only way to do this is charging them with an automatic charger that stops when the batteries are really fully charged and then discharging them with a constant current and measuring the time this lasts until they reach a certain level.
A.f.a.i.k. there is no such kit.

ok, thanks for the reply.