Only purchase brand new sealed packaging
The items arrived in a bulk bag.  There wasn't 50 of them but I put 4 in each of my video cameras.  Took the cameras outside and opened my cell phone app to adjust them and the battery level from the app showed 2% or less.  Checked several more of the batteries in the bulk packaging and they wouldn't even register on my battery tested.  The items received looked new but were not and had to order more.
Rating: 1 stars