Super easy way to open any jbl charge port. Use a $4 lego pry tool and use the skinny end as well as pushing a light amount of force into the tab
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PowerSource 19V 65W UL Listed 13Ft Extra Long AC Adapter for JBL Xtreme, Xtreme 2, Xtreme Portable, Extreme, Extreme 2, JBL Boombox 1 2, Wireless Bluetooth Boost TV Speaker Charger Power Cord : Electronics
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JUYOON 19V 3A Xtreme 2 Charger for JBL Xtreme 2 JBL Xtreme Boombox Boost TV Harman Kardon go + Play Omni 10 Aura Studio Portable spearker ADS-60JIA-19-2 1957E NSA65ED-190300 DT19V-3C-DC : Electronics