I resently had that issue I'm still under warranty and I took it in and they replaced (both batteries). They first tested the batteries and then put them on charge over night and they both failed so they replaced them. I ask the dealer how long before they both failed he said weeks when this...
I have the Tan seats in my JLUR AND White sets in my Tesla
I use Dawn dishwashing detergent works great lint free cloth wet add a good amount of non bleach Dawn foam up the seat use another damp towel and remove then condition sets will last forever.
Down is good for skin leather is skin.