✅【Auto Charging Function】Internal resistor and battery tracking resistor are charged automatically. Switching frequency: switching frequencies up to 1 MHz, compensate for voltage loss in CV mode. ✅ 【Strong adoptability】: Strong adaptability to input power, driving capacity is limited to battery protection. ✅ 【Protect the battery voltage】: The voltage of the protective battery is lower than the input voltage and short circuit of the battery. ✅ 【 Made Material: Made from materials, strong and durable, has a long service life. Small size, easy to carry and store, convenient to use and with good performance. Section 4 (4S) Version 16.8V, input voltage DC 3-6V (DC 3.7V 5V is recommended).
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