Various factors can cause charging issues on your speaker. It could have a defective battery, a software glitch is preventing the charging process, charging port is blocked, defective charging cable, or even a faulty wall charger.If the issue is caused by a defective battery then you will need to get a replacement battery.If your speaker is not turning on then this might be due to a short circuit or defective circuit board. You will need to have this checked at a service center.