Hi I have some battery which are old and I don't remember if they are nimh or nicd. How do I figure out which ones they are, the label on them reads Trinity EX TECH racing cells? Thanks

Not sure, it might not matter much if you have a charger suited for both like the Dynamite vision peak 2. It charges both nicd's and nimh's and has no way to chose which chemistry of cells your charging. You just plug in the battery and choose your output amperage and wait for it to finish. Otherwise you could do a google search and it might help you out.

Ok thanks