3400mAh 1WJG0480 TI100782 Replacement Battery for DJI Mavic mini Controller TI100782 1WJG0480,3.7V/High-Performance Battery

https://a.co/d/019oYWO8 You can just replace the battery. Edit: Here's a video showing how to replace it: https://youtu.be/45SlVUU2TlU