Do you often spend 18 hours with your headphones in? Even on a long day I’ll have 5 minutes to charge them while talking to someone, using the bathroom or getting lunch.
i do! Well, not 18 hours. the Anker I bought "only" lasts about 12 hours (only the newest model gets 18).
I do a lot of home improvements and listening to audio books is how I make the experience tolerable. only having to charge my earbuds at night (along with my phone) is nice.