Traditional Culture Encyclopedia - Traditional virtues - Transform traditional speakers into battery efficiency
Transform traditional speakers into battery efficiency
9V 1200mAh is 10.8Wh, which can support working for about 1.2 hours.
However, you need to consider the location and charging method of the battery. There are few ready-made charging management circuits for 9V batteries. Need self-control. And it needs a charging power supply (10.8V or more).
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