Synergy Digital Speaker Battery, Works with JBL Charge 2 Plus Speaker, (Li-Pol, 3.7V, 6000 mAh) Ultra High Capacity, Compatible with JBL GSP1029102 Battery - Walmart.com
Cameron Sino 6000mAh Battery MLP912995 2P for JBL Charge 2 Plus, Charge 2+, check the place of 2 red wires and 2 black wires|Digital Batteries| - AliExpress
JBL Charge 2 (CHARGEIIBLUAM) Portable Bluetooth Speaker (Blue)
JBL Charge 2+ | Full-featured splashproof portable speaker with high-capacity battery to charge your devices
6000mAh MLP912995-2P Battery for JBL Charge 2+, Charge 2 Plus Bluetooth Speaker - Walmart.com
JBL Charge 2 review: A long-lasting Bluetooth speaker that can juice up your gadgets, too - CNET