Covers how to check charge on JBL Wonderboom 1, and also, how to know if the charge holding capacity is shortening over time. How to Check Charge on JBL Wonderboom 1: Step by Step 1. First, Turn ON the JBL Wonderboom 1 You won’t be able to read charge status unless the speaker is ON. … Continue reading How to Check Charge on JBL Wonderboom 1