Thanks for sharing this information! I will report it to our R&D team and they might did a test for it on our end.

Sorry for the inconvenience. Your NVR’s firmware is already the latest one. If you want to upgrade the camera's firmware, you may need to do it via the monitor. Do you connect your NVR to a monitor? If yes, please refer to this article: https://support.reolink.com/hc/en-us/articles/360005131094-Upgrade-Firmware-via-PoE-NVR
B800's latest firmware: https://support.reolink.com/hc/en-us/articles/900000033303-12-10-2019-Firmware-for-B800-D800-IPC-5158MP8M-

Hi Peter, thanks for your advice. I will collect it into our suggestion box.: )

Sorry for the inconvenience.The user manual is behind of time. But please don't worry, should you have any questions about the settings, please feel free to contact us via support@reolink.com.

The approx battery life of Reolink battey-powered cameras can last 500 cycles.Charging from 0%~100%,and then running to 0% is one cycle.