RV with Solar Storage Question

Hello I have solar panels installed with lithium batteries but I plan to store the rv for 6+ months when I am not using it. Is it better to cover the RV with RV cover or leave it uncovered and have the solar panels turned on? I think with these batteries https://www.amazon.com/gp/product/B08K7HZ6KZ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 i think they were saying its better to keep these solar panels turned on and something to leave on like a amazon echo so batteries will be using instead of staying dormant which would kill the batteries...is this true?