@Jinny116
We've had a battery camera for over 3 years, plugged into household current with the optional power cable, and has been "Live", online, and recording ever since. The camera has to be plugged in, in order to get the 24/7 video history that is enabled with a Nest Aware Plus subscription.
When viewing video history, you can toggle between a Timeline or an Events list (https://support.google.com/googlenest/answer/10904254). When viewing the Timeline, the footage in between events shows in gray, but you can click anywhere on the timeline to view the footage between the detected events, PROVIDED THAT, as I said above, the camera is plugged into household current.
If your camera is plugged into a solar panel, it still runs off of the battery ("If you’ve connected your Nest Cam [battery] to the Wasserstein Solar Panel, the panel doesn’t directly power the camera. Instead, the battery is trickle charged by the panel, and the camera runs off the battery charge." - https://support.google.com/googlenest/answer/11830989) and therefore CANNOT record 24/7.
"*The Nest Cam (battery) must be connected to a power source to have 24/7 video history. If your camera is battery powered, it will only have event video history, even if you have a Nest Aware Plus subscription. 24/7 video history isn't available for the Nest Doorbell (battery), even with optional wired installation." - https://support.google.com/googlenest/answer/9681538
The reason for this is that the battery cannot provide enough power for 24/7 recording; the battery would be quickly depleted.
