The issue is: homey works with 0 to 1 values internally, and in flow cards. Somehow when you use % as unit, it multiplies the value with 100 to convert it into a % value.
The battery reports 0 to 100 probably, so you’ll have to add a / 100 (divide by 100) calculation.
On top of my head you’d enter $value/100 into the BLL field to solve it
