DJI CP.OS.00000025.01 Battery for Osmo Action Camera
The battery features two locks for easy installation. The maximum capacity of the battery is 1300mAh, significantly extending recording time. The battery case holds and protects multiple batteries and microSD cards. It allows you to classify and store batteries into compartments marked with different battery level signs.
This battery is working as good as the original one that came with my Osmo Action camera. Only time will tell if it holds the charge after dozens of recharges. For now I'm happy with my purchase.
It's DJI what more can you say?
Must have, if you plan on filming in 4K. I would buy at least 4 .