8.4v 12.6v 16.8v Fast Charging Boost Power Board, Step Up Boost Li‑ion Battery Charger Module, DDTCCRUB 2S 3S 4S, Input Voltage DC 3‑6V

• Switching frequency: The switching frequency of the charging module of the LiPo battery charging battery is up to 1 MHz, and the voltage loss is compensated for quasi-CV mode.
• Automatic charging function: the battery charging module has an automatic charging function for the internal resistance of the battery and the tracking resistance.
• Protection function: protect battery voltage under input voltage and battery short circuit function.
• 【Strong Adaptability】The lithium battery protection board is strongly adjustable to input power, limited drive capacity and surge protection battery.
• 【Features】The battery charging module is small, easy to carry and store, easy to use and good performance.