Is my Lenovo yoga 910-13ikb battery defective? Why can't it be charged to 100%?

According to pcsupport.lenovo.com, Lenovo Energy Management software is a tool that is used to extend the battery life by limiting the battery to 60% charge.

Here is the solution: Open Energy Management. Click Start. Select All Programs, then Lenovo. Select Energy Management, then choose Power Management Options. This is set to the Optimized Battery Health setting. To charge the laptop to 100%, check the Maximum Battery Life option.

When you are ready to replace this Lenovo battery, kindly remember it is only compatible and should replace with these part number: L15C4P22, L15M4P23, L15M4P21 L15C4P21, 5B10L22508, 5B10L02190. Also you could get a original pack here: https://www.storebattery.co.nz/lenovo-yoga-910-13ikb-7.68v-10160mah-laptop-battery-store-for-new-zealand-p-221440.html

To check whether the Lenovo yoga 910-13ikb battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator or icon is not lit, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack.

If the charge indicator is still not lit, replace the system board.