✔100% brand new and high quality, the external circuit is simple, good protection performance and good high-precision charging.
✔Light state: no load the light is not bright, red light for charging, is full of green light.
✔Protection: Overcharge, over-discharge, short-circuit and over-current protection, two-in-one charge and discharge protection function.
✔Note: The ammeter to test the current can only be connected in series with the 5V input terminal of the charging board.，When the voltage is high, the chip will heat up and automatically reduce the charging current to avoid burning the chip.
✔Package includes: 20 x 18650 charge modules