To all battery experts:
I am having a very rare issue with my 8 Maha Imedion batteries. I use all 8 of them for my CP-E4 battery pack and it doesn't work. i.e. no light, nothing, nada...(I inserted batteries into my 580EX as well.) However, when I tested them just 4 of them on my 580EX II flash, it works just fine, therefore ruling out its possibility for being defective. I tested my CP-E4 with normal alkaline batteries and it seems to work just fine.
Is there a catch for this type of battery? The batteries are fully charged using the Maha Powerex MH-C800S Eight Cell Smart Charger. Please advice. Thanks!