Why QUEST 3 Need Fast Charging: Since the performance of QUEST 3 has been improved greatly, the previous charging solution adapted for QUEST 2, was far from adequate for the power needs of QUEST 3. When the charging speed cannot match the power consumption speed of the QUEST 3 headset, discharging happens. Currently, most battery straps drain the battery life but ONLY AUBIKA does not! Fast-charging solutions save QUEST 3 battery life. We believe that this is what a battery strap should do.Extended Playtime with 8000mAh Battery: Aubika Head strap for Meta Quest 3, built-in 8000mAh rechargeable battery to power up the upgraded performance of Quest 3. Great elite strap replacement as its battery capacity 3 times than the official elite strap. You can observe the battery status in real-time through the power indicator icon.