@joeazzato there are plenty of picture of the L16 but never enough information about how to get to the battery. I strongly suggest you go to this site and safe all the information to your personal drive. Nobody knows how long it will be around. These are not step by step instructions, but more of a teardown. So use caution and care when you disassemble it. Also, teh damage to the housing can most likely be minimized by using the proper opening tools and some heat to loosen any adhesive etc. Lots of trial and error :-)
You are now the pathfinder for this :-) While you work on it to replace your battery, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will greatly appreciate this.