BP1900-2660mAh High Rated Ultra Power Plus+ Lithium Li-on Digital Camera Battery Compatible with/Replacement for Samsung NX1 Digital Camera

I needed an extra battery for my NX1 and decided to give these ago since they are a higher mAh and much cheaper than the original Samsung ones. They look high quality and fit into the camera perfectly. I gave it a charge overnight before use and it powered up my camera with no issues. I used I swapped batteries with my original several times as and when they ran out of charge and to my surprise I found that even though these are rated higher mAh... The Samsung one did seem to last quite a bit longer each time. They sell an even higher rated one which I guess may be the same if not a little more mAh than the original ones. However for the price i'm not complaining, 3 of these is cheaper than an original Samsung one and I'd much rather have 3 :D

works fine for photos but when it comes to video it'll cause errors when the battery is half full during recording, which can be bit of a problem having to tell your actor "sorry camera stopped recording let's do that again" . haven't tested it with timelapse but I'd watch out for that too.

Great battery. Have used Expel for years with no issues

Performs as expected

Have not yet tested capacity but in every other respect work fine straight out of the box... Excellent value