2x6W DC 5V 3.7V Speaker Modified Stereo Bluetooth amplifier board can connected Lithium Battery

This is a 2x6W Bluetooth amplifier board with charge management that can be powered by lithium battery. Small heat production in standby, good stereo quality, suitable for small Bluetooth speakers.Features: 1. Small standby heating, good-quality stereo, suitable for Bluetooth speakers. 2. Output power 6W 6W, two-channel stereo, good sound quality. 3. Lithium batteries can be connected, with charge management. 4. When using a lithium battery, the charging interface can be charged with a 5-volt power supply or a mobile phone charger to charge a single-cell lithium battery. 5. The charge management circuit limits the battery to a maximum voltage of 4.2VDC.Specification:Item Type: Amplifier BoardModel: HF69BSupply Voltage: 5VDC or 3.7V lithium batteryApplicable Speaker Impedance: 4 ohms, 6 ohms, 8 ohmsCharging Interface: When using a lithium battery, the charging interface can be charged with a 5 volt power supply or a mobile phone charger to charge a single lithium battery.Package Includes:1 x 2x6W DC 5V 3.7V speaker modified Stereo Bluetooth amplifier board