In recent years, drones have developed rapidly, but there is also a problem with drones, which is that their flight time is very short and when they are not loaded, they usually need to be recharged or replaced with batteries every 10 to 30 minutes. Therefore, during the interval between flights, users need to quickly and safely charge their batteries as backup. At the same time, it is necessary to use a step-down and boost charger for multiple battery packs such as drones. When it comes to charging, we also have to mention many advantages of USB type C.

USB type C has the appearance and technical advantages of slimmer design, faster transmission speed (10Gbps), and stronger power transmission (100W). Therefore, it has been favored by the industry since its launch. More and more electronic products are equipped with USB type C motherboards and USB PD ports, and their presence is increasingly seen on mobile phones, laptops, mobile power supplies, and drones. However, type C ports may encounter complex external power sources in their engineering work, and boosting and reducing voltage are essential. When the device is charging, if the voltage source is higher than the battery, the step-down boost battery charger can lower (step down) the voltage source to charge the battery, or can separately increase (step up) the voltage source. When supplying power to peripheral devices, if the peripheral device requires a lower voltage, a step-down and boost charger can reduce the battery voltage. If a higher voltage is required, the device can boost voltage.