REYTRIC Upgrade 2-Pack 1850mAh Osmo Action 3/4 Replacement Batteries for DJI Osmo Action 3 4 Camera and 2-Channel Charger Case Compatible with DJI Osmo Action 3 4 Extreme Battery

These little batteries are pretty awesome they have the same run time as the battery that came with my DJI OSMO ACTION 3 camera and they fit and charge well in the charging case. Great product would buy again!!

The case helps holding the batteries and charging them at the same time. It does not hold charge on itself, so once unplugged, the batteries get no extra juice. The batteries itself are reasonable enough and I'm not testing them to the limits, but they hold a fair amount of a long time (1+ hour) without issues or heating. I was able to record a whole little league game with it.

They work great for the action 4

Did not come with the battery pack itself. Was missing a battery and the “charging case”. Return initiated.

The batteries are fine, but they do fade about 2–3% over a week and a half, so plan on topping them off if they have been stored any length of time. Even though the company claims higher capacity, the chemistry is everything. The performance of these compared to OEM batteries is insignificant. I ran these against an OEM (8 months old) battery in 2 identically configured Action 4’s and they both died within a minute of each other, but the OEM lasted longer, about thirty seconds or so. I would like to see how these handle freezing temperatures, maybe I’ll record my freezer for a couple of hours to see how they handle cold in a face-to-face. These are more budget-friendly than the OEM batteries, about a third cheaper, and the way I go through batteries, that is important. Would buy more of these if they handle the freezer test.

Works great with my DJI Action 4

Was looking forward to this product but it showed up with just the batteries no charging case.

These 1850mAh batteries are slightly larger capacity than the 1770mAh battery that came with my Action 4 so hopefully will provide a little better than the already impressive 160 minute rated record time. After receiving the batteries I put them in the included charging case and plugged it in with my own usb-c. They charged right up and both read 100% when inserted into the camera. The charging case is very convenient for transporting and the three batteries I now have should provide more than enough recording time for mountain bike rides. Very happy with the product so far, I'll update if there are any problems.