The manufacturer does not provide that information. I recommend contacting ATN or emailing us at techsales@opticsplanet.com so we can get more information to help you.
The battery is not replaceable, but I'd assume it's covered by the warranty to some extent. I'd contact ATN directly if you needed it replaced.
This unit features a built-in rechargeable battery for convenience—no need to worry about removing or replacing it.
OPMOD is our OpticsPlanet exclusive version. The product itself is the same. However, OPMOD products often come with little accessories like the OPMOD branded case that is pictured or come in exclusive colors.
The ATN OTS-XLT 2.5-10x Thermal Viewer includes a USB-C charging cable and could be recharged with a USB compatible solar panel/charger.
The ATN OTS-XLT 2.5-10x Thermal Viewer has a minimum magnification of 2.5X. So what ever you are viewing will appear 2.5x bigger than viewing with the naked eye. ATN does not state the minimum focus distance of the ATN OTS-XLT 2.5-10x Thermal Viewer so for that information I recommend contacting ATN.
The ATN OTS-XLT 2.5-10x Thermal Viewer does not have a tripod mount.
No, it cannot be mounted on a helmet.
The ATN OTS-XLT 2.5-10x Thermal Viewer can not connect the the ATN X-SIGHT 4K. However, the rangefinder listed at the link below is compatible with that scope.
https://www.opticsplanet.com/atn-abl-smart-rangefinder.html
The manufacturer doesn't state if you can use an external battery pack with the ATN OTS-XLT 2.5-10x Thermal Viewer. I would contact the manufacturer to see if there is a compatible external battery pack they recommend.