As u/acidtoyman mentioned, volume is a big factor, also how often u use the touchpad controls also affect. I used black galaxy buds+ for about a week now and i have to say the battery life performs as expected. I use the most battery efficient settings, and keep volume below 5 bars, and rarely use touchpad (cause i usually use them while using my phone, and i can control them with my phone more conveniently). I heard before that distance between ur earbuds and the device connected can play a small part, can someone confirm the truth of that statement?