Here are my full discharge/charge tests so far on my 2019 SL Plus:
The last 3-month update happened between January 12th and January 16th. On 1/12 AHr=165.90, SOH=94.05%, and Hx=100.18%; on 1/16 AHr=165.41, SOH=93.77%, and Hx=100.05%. Hx has bounced up and down since then while AHr and SOH have continued their very slow downward trend. I cannot determine causes for variation in Hx values, but ambient temperatures have varied (we had snow falling, but not sticking to the ground in north Phoenix a week or two ago and it is about 70 F with sunshine today) and my highway vs. suburban driving has also varied.
The last 3-month update happened between January 12th and January 16th. On 1/12 AHr=165.90, SOH=94.05%, and Hx=100.18%; on 1/16 AHr=165.41, SOH=93.77%, and Hx=100.05%. Hx has bounced up and down since then while AHr and SOH have continued their very slow downward trend. I cannot determine causes for variation in Hx values, but ambient temperatures have varied (we had snow falling, but not sticking to the ground in north Phoenix a week or two ago and it is about 70 F with sunshine today) and my highway vs. suburban driving has also varied.