Jak widać,, that battery is used from a xiaomi fimi x8 drone, which was actually over discharged and was damaged according to fima drone software. I flown this drone and got the 35 minutes flight time with modified battery. The battery modification video link is in the description where you can see how to make the modification and reuse the damaged battery in the hubsan xeno pro and pro plus drones. Please continue watching this short video and also find the previous battery mode videos from description. Please hit to like button on this video and share and please subscribe to our channel to get further useful videos in the future. Dziękuję Ci, Muzyka.