Suitable for a single lamp bead voltage of 3V, multiple parallel use, the maximum drive output is about 1A, using SI2302 NMOS tube, onboard lithium battery charging management and Seiko protection chip, special 4KHZ frequency PWM, single-channel DC LED light touch Control stepless dimming IC, basically no flicker; with automatic power supply switching function, when the external power supply is no longer powered by the battery, it is powered by the external power supply while charging the battery; when the external power supply is unplugged, it will automatically switch to battery power supply. Ensure that the battery can be charged and fully charged correctly; and with a low-power LDO to provide the operating voltage for the touch chip, it can calmly deal with any complex working environment.