That’s depends, seems that there’s a threshold when the battery starts to discharge. If you use a 60W charger, a 48W constant gaming load is enough to discharge the battery then the battery charges back, doing light load such as document editing is fine. If you use a 30W charger, even idling on desktop with <5W load, discharges the battery at about 0.08W to 0.6W, until the battery level is 1% lower than charge limit %(set manually with battery extender off), then the power from USB will be fully used (27W~30W) to charge the 1% back