Got one when I got my Samsung Fold 3. I liked smart charging on my old OnePlus but Samsung doesn’t have that… Only way is to limit it to 85% or charge to full 100%. And I rather use full 100% of my battery because I use it a lot.
Last time I checked my battery health was still “good” after 2 years of use (via Samsung diagnostic tool).
I’ve set my chargie charge to 85% and then recharge only when battery drops 10% or more. And at 5:00 it charges once to 100% so I have my full battery at morning
Couple of times in last two years it hasn’t charged up to 100% (stopped to 85%). Don’t know why, but it hasn’t been huge issue.
Don’t know if charge helps with battery, but at least it doesn’t make it worse 🤷