Fortunately it doesn't take 6 hours to charge! I'm still not sure where the 18 hour number comes from, I use mine for close to 24 reliably. About 1 hour charging every morning while I'm at my desk not doing much physically anyways is all it takes. Before the WFH times I'd charge it in the morning after it woke me up and maybe in the evening if the charge was below 30% so I'd be certain it would get through the night.