The only way to record to an SD on a battery powered WYZE Cam Outdoor version 1 or version 2 is to use scheduled event recording. Set it for 30 days, MOTION ONLY, no cooldown period and a max. duration of 5 minutes for each event video. To view what is on the SD card you need to open the cam to live view, then on the bottom right tap MORE then tap Album where you will see Scheduled recordings. To view the events that are shown you have to tap the download arrow to play the video, the video is also saved to your phone/device photo album. It is a complicated process but it does work.
If your camera is in a busy area and you are recording to the SD (Motion Only) the battery will drain a little faster, not much but faster than normal. If you set it to record Continuous the battery will be dead in 6 to 8 hours if you start at 100% charge.
Directions for Scheduled Event Recording.
https://support.wyze.com/hc/en-us/articles/7849731370651-Wyze-Cam-Outdoor-Features#h_01G9NH7ATHTARX25TRAVJ9C0AX