Wanted to give a zero star product rating but Amazon system doesn't permit.
Never thought I'd write a review for a duff battery but seeing as I've got to buy yet another one for my Olympus C770UZ camera, I thought I ought.
Purchased the camera and spare battery (an Olympus branded Li-12B) in 2005. Yes, quite a while ago but I'm not an avid snapper - mainly holidays and days out so it's had light use.
Upon receiving the batteries, I charged them up. The one that came with the camera, a Li-10B, took charge OK but the Li-12B wouldn't. I tried it in the camera anyway and it died immediately. Retailer suggested I accept a Li-10B in exchange so I did. What a fool - I should have marked one of them because after maybe 20 - 25 charges, one of the batteries started to weaken significantly. Even following a long charge, it would be completely flat after standing for a month. Now, it's all but useless.
I always treat the batteries carefully and take the trouble to store them properly when outside the camera so I see no reason for the failures other than poor design or manufacturing quality.
I read that Lithium Ion batteries exhibit `low self discharge (<10% per month)' and have `excellent charge-discharge characteristics (500 cycles)' - I wish!
Another reviewer mentions similar problems with an Olympus Li-10B battery so my experience isn't an isolated case. Most reviewers though seem to be happy with their purchase, for the moment anyhow. Perhaps I've just been unlucky?
Time to try out a cheap brand - couldn't be any worse, could it?