Is this it? I looked to see if there is a battery, (yes), which you can put a meter on and check, and seem to find a few tips in the review section. (A lot of complaints too, but that is not what I'm after. Not relevant. )
https://logiaweatherstations.com/products/7-in-1-wireless-weather-station-with-wi-fi®-and-solar-panel?_pos=6&_sid=36d79f11e&_ss=r#shopify-product-reviews
Might help a little