For true wireless earbuds, a "good" battery life typically means anywhere from 5-8 hours of continuous playback on a single charge, with the charging case providing an additional 15-30 hours of total battery life. Premium models often push the upper limits of this range (8-10 hours per charge), while budget options may deliver just 4-5 hours. Keep in mind that features like active noise cancellation (ANC) can reduce your listening time by 20-30%. For all-day listening, look for earbuds that offer quick charge capabilities (e.g., 5 minutes of charging for 1 hour of playback) and wireless chargi