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:

1. Item Type: Amplifier Board
2. Model: HF69B
3. Supply Voltage: 5VDC or 3.7V lithium battery
4. Applicable Speaker Impedance: 4 ohms, 6 ohms, 8 ohms
5. Charging 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.