Howdy,
Yes, the battery is replaceable. IFixit does not have a guide, but I was able to find a [link|https://www.youtube.com/watch?v=YJCypUHW0uU|video guide] and a [link|https://www.amazon.com/Duotipa-MK50-Compatible-Motorola-SB18C85232/dp/B09Y1G9MZP/ref=asc_df_B09Y1G9MZP?mcid=b7ecf6221f8e354e96ee28c89a3d2101&hvocijid=530547781964805922-B09Y1G9MZP-&hvexpln=73&tag=hyprod-20&linkCode=df0&hvadid=721245378154&hvpos=&hvnetw=g&hvrand=530547781964805922&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9021458&hvtargid=pla-2281435176378&psc=1|replacement battery]. I am having a bit of a hard time finding the exact adhesive for the screen, but you can use [product|IF317-072-6|Pre-Cut adhesve sheets] to secure the battery.