Connecting Batteries & Chargers in Series & Parallel
Batterie pour enceinte JBL Charge 2+ Plus Li-Polymer 6000mAh 3.7V
How to charge multiple batteries - YouTube
Amazon.com: Pickle Power Battery for JBL Charge 2 +,Charge 2 Plus V1 Version 3.7V 6200mAh Replacement Bluetooth Speaker Battery GSP1029102R(Wire Place Red-White-Black) : Electronics