About Switch Lite charge voltage limit

I use TegraExplorer system wipe on my Switch lite.And In hekate Battery Info,I found my Switch Lite charge voltage limit change to 4192mV,before is 4208mV.
Afrer in HOS 4 charge-discharge cycles(100%-0%-100%-0%-100%-0%-100%-0%), it always keep 4192mV,and now about 15% full battery capacity not use.

How can I fix it?