Why does my Kestrel contain cracks or lines on the battery door? Does this make it not waterproof anymore? July 20, 2023 18:45 These are not defects, please review the following for more information: Battery Door Related articles Can I upgrade my non-Ballistics 5000 Series model to a Ballistics model? Why isn't there a Night Vision option for the Kestrel 5 Series? How can I update my firmware using Kestrel LiNK for Windows?