March 27, 2014
I have in the past purchased after market batteries for my Olympus cameras with varying degrees of quality. Even the best ones don't seem to retain the charge as long as the Olympus originals, nor do they last as many recharging cycles without some drop off in the charge.
You have to ask yourself the question on whether you want to pay less up front and know that you have to keep changing batteries when you are out or pay a bit more & get the longevity. For me I have changed to paying more up front and having it last. It is well worth the cost.
May 28, 2013
Took home 2 of these when I got my new OM-D E-M5 last year.
I am always charged and ready to go with one charged battery installed and one in my bag. I am thinking now may be a good time
to cover myself with backups since vacation time is coming soon although they appear to be still going strong.