Kastar 2-Pack Rechargeable Battery Replacement for Olympus BLN-1 BLN1 Battery, BCN-1 BCN1 Charger, Olympus M-D E-M1, OM-D E-M5, OM-D E-M5 Mark II, OM-D E-M5 Mark III, Pen E-P5, Pen-F Cameras

I did an outdoor shoot 4 days ago for over 2hrs, consistently shooting with only ONE battery. The battery still has not discharged🤷🏾‍♂️. I DEFINITELY recommend these💯!

In my observation, as a photo hobbyist, these Kastar Brand Rechargeable Batteries need to be charged before using. On my charger, which you can also buy on Amazon, the charger lights stay red for a long time, when new out of the package, meaning the batteries need charging. When the charger lights turn green (at about 40 minutes, or so) they're fully charged and ready for use. Whatever charge that is in them out of the box may not last a session. I always charge them first. I've used these Kastar's for quite a few years now and they're very dependable batteries, but remember, a long or short photo session will burn a charge quickly. Which is why it's good to have plenty of Kastar Rechargeable Batteries on hand. Traveling? Take at least 4 Kastar's and your universal USB charger if going to a theme park or something to travel light. Camera's are Olympus "OM-D/ E-M5" and the USB (plug anywhere) Battery Charger, both sold on Amazon as well. Buy with confidence! Nora's spouse, John -

So far so good, haven't tested long term but works fine on first few charges. I don't expect the life of this battery to be as per original, I've used these also before, but it provides additional backup esp when traveling.

I've used Kastar for years, with various camera brands, and they've been pretty good. But these started acting up about a month after I bought them, losing charge quickly and even worse, causing the camera to malfunction. And I was using a Kastar charger. No problems with the much older Olympus batteries. I'm beginning to wonder if all these Chinese battery companies have been bought up by a shady holding company as I've experienced the exact same change in quality with Wasabi brand. Wish I knew who to trust.

So far, they seem to work better than the originals

I'm having problems using these in my Olympus MFT camera. They appear to be fully charged but either won't start the camera or crash after a couple of shots.

Bought this for to replace the old battery on my Olympus OMD EM5 Micro 43 camera. It fits perfectly with no issues when putting it in or taking it out of the camera. The original battery is 1220 mAh and this one is 2100mAh. While I don't remember how many shots the original one can take, I remember it barely last a day on vacation with an occasional video capture here and there. I tried to test this battery out and it definitely lasted longer. I'm not sure if it is almost twice as long due to the mAh difference, but it's longer. I tried to take pictures and record a few videos to simulate a vacation and by the time I was done, it's only around 50% depleted. I'm glad I'm getting 2 battery for only $15. I can bring the extra battery and shoot all day and not have to worry about running out of juice. My only concern with third party battery is longevity, which I cannot test at the moment. If there is any issues within the next 6 to 12 months with the battery, then I will update the review. Until then, it's working well for me and I recommend it for any ones that want to replace their old camera battery.

It's always helpful to have some spare batteries, and these are a much better value than the OEM ones to use for spares. They seem to last a long time in my shooting session test. However, they may not have the ability to hold their charge quite as long when they're sitting around, so be sure to charge them the night before you need them. Overall I think these are an excellent value and work well in my Olympus camera, including showing up in the battery monitor.