Andrew sent in a few paragraphs about NiMH batteries specifically in reference to the extensive news that Lee at Airsoft Armoury Ltd previously sent in, which makes useful reading if you’re thinking of mixing and matching battery types:
NiMH cells do have memory, although it is rare. This stems from the fact that it is the nickel plate chemistry that is common to both NiCds and NiMHs. Not too important, but I thought you may want to consider letting people know that if they are running a NiCd charger they CAN NOT use it for NiMHs.
Using a NiCd charger on NiMHs will not detect the peak of the battery’s charging cycle fast enough because the voltage drop is very small. This usually leads to overcharging which NiMHs are extremely intolerant to, and is the usual cause of the so-called memory effect (which is actually excessive crystal growth within the cell). Chargers MUST be rated specifically to charge NiMH batteries.
Hope this helps. Andrew
