It’s explained fairly well here:
I assume if you start Travel mode from the base station all connected cameras would be in Travel mode. It doesn’t really say.
Travel Mode gives you the freedom to use your Wyze Cam Outdoor anywhere, even when you're away from home. This feature lets you use the camera without an internet connection, and it can be enabled ...
You will only get about 10 hours out of the battery.
Unlike V2 and Pan, WCO is a battery-powered camera and we can’t afford to add a continuous recording feature like v2 or Pan because it kills the battery in no time (one single charge of the battery lasts for around 10 hours of continuous recording). Plus watching local “playback” videos on the outdoor camera would wake up the camera from a power saver mode to transmit the video to your mobile device and that’s another huge battery usage. Cam Plus is a better option for your home security use case and it’s coming soon on the outdoor cameras.
Another feature that we’re working on is motion-only scheduled recordings where only motion events in a scheduled time interval are saved to the SD card inside of the camera. It’s a lot similar to V2 motion only local recording.