Quote: Can anyone recommend a good (and cheaper!) alternative to Oly's BLM1 battery? 7 BLM1 batteries from Oly is equivalent to buying an e520 body It's a mad world!
I have been using a Hahnel version for the past four years and it works just as well for half the price.
I have used them in my Canon's too and they have worked fine, except one which was DOA, but was replaced by my dealer without question.