It can be replaced. The batteries should keep the scope from cutting off. If you get the extended battery case for 16650 batteries to replace the 123's, you should be able to make your hunts okay. I use them. They are rechargeable and do quite well for me, but I don't deal with temps like you have. Even the 123's should keep the scope from turning off at the recoil. You can off course check your usb-c cable, but it is almost always the port gets worn and loose. If you send it in, then you may want to pay the extra and get them to install the magnetic port. You can get either a 1 ft. magnetic cable or 3 ft. included with the magnetic port.
Here is a link to the extended battery pack with batteries and charger.
Designed to power Bering Optics thermal scopes and Clip-Ons with 16650 type rechargeable batteries. Compatible with all Hogster, Super Hogster, and Super Yoter line of thermal scopes and thermal Clip-Ons.
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