Setting the device on Battery Limit changes the protocol for charging the device battery. When Battery Limit is enabled, the battery charge will be limited ranging from 50% to 90% of its maximum capacity based on how much flexibility the manufacturer is willing to allow. The charge level reported in Windows will reflect this limit. Therefore, it will show that the battery is charged up to the set value selected and won’t charge beyond this limit. If you enable Battery Limit while the device is above the set charge limit, the Battery icon shows the device is plugged in but discharging until the device reaches the set charge percentage of its maximum charge capacity.

https://laptopverse.com/2022/07/27/charge-your-laptop-without-limit/