Question Onn. Earbuds Only Playing for 3 Hours

Mar 18, 2021
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My Onn. Bluetooth earbuds are only playing for 3 hours at a time. I got them around August of last year, and they worked fine until a couple of days ago, where they only played for three hours. They are fully charged each time I use them, and I haven't used them any differently lately. Does anyone know what's going on, or how to fix it?