2x6W DC 5V 3.7V speaker modified Stereo Bluetooth amplifier board

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.