i have an Ion block rocker Bluetooth speaker/radio. It functions fine when connected to AC. The power cord is a Mickey Mouse cord and the power supply is internal and seems to function fine. I am getting 13.6 V at battery with 2A Current. So it is charging the battery but when the AC cord is disconnnected the radio/speaker will not function on the battery. The battery is new. What I would like to know is the basic principle behind a circuit such as this. Thank you in advance.
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