BM PremiumBLX-1 High Capacity Battery and Battery Charger for Olympus OM System OM-1, OM-1 Mark II, OM-3, HLD-10 Cameras

I’ve own different cameras over the years and I’m too cheap to buy OEM so I buy 3rd party batteries. I have tried different brands over the years and this brand BM Premium (Big Mike's Electronics) has been the best. 3rd party batteries will not last as long as the OEM battery as the cells are cheaper. But the BM batteries has been the closest in regards to run time compare to other 3rd party batteries I have tried over the years. A major plus for me is has a slower self discharge compare to other other 3rd party batteries.I’m using this battery in a Olympus OM-1 and so far no issues. It works almost as good as the OEM battery. I’m using a BM battery in my Sony A7III as well and I do not get the non-OEM battery error message and it last almost as long as my Sony OEM battery.The included charge will charge the Olympus OEM battery without any issues. The charger is a bit fatter than I would like and you have to plug it into a wall outlet. I will keep sticking to BM batteries from now on due to my great experience with their batteries.

Charges the BM batteries and the Olympus OELM.

No stars put my battery in for my camera. It was 84% charge. Put it in the charger two hours later still not charged throwing out in the garbage did not buy.

Seems to be a form, fit and function replacement for the original OM1 battery at less than half the price, and the included charger is a plus.