TinderBox (UK)
Flashlight Enthusiast
The only stamp i can find on the cells is "8F 18" and they are 2000mah ActiveCharge cells, I will have to try some Eneloops and see what temp i get them.
Thats a bit on the warm side for brand new cells being charged at only 550mA.... I charge my cells at 1800mA from time to time when im in a hurry and that does get em a bit warm but 500ish shouldn't do that. How old are the cells you received with the charger? It should be stamped on the cells somewhere.