Onyehn 12Pcs 5V Boost Step Up Step-up Transformers Power Supply Module Lithium Battery Charge Protection Board for DIY Charger,with LED Display,USB and Micro Port

The use of welding Note B + positive and B-negative can not be reversed 18650 battery Charging board size : 22*17*11mm Input : 5V 1A (charging red light) Output : 5V 1.2A (please do not take longer than 1200mA current device) Lithium voltage : 3V- 4.3V Charging Interface : Micro USB Available for various batteries like Polymer ,18650 Lithium ,Cell Phone ,Tablet and MP3 Battery The step up charging board can be connected to a lithium battery and connected in multiple sections of lithium batteries, as long as the voltage is 3.7-5.5V in parallel(only be connected in parallel, not in series) Charging instruction : Two versions are shipped randomly.Old Version charge status indication. Red light flashes when charging; Long red light when full;New Version has no lights. it has protection functions, protect from over-charger / over-discharger/ over-load ( support charger and discharger at the same time ) The image is for illustration Package Included: 12 X 5V Lithium Battery Charge Protection Board

Features

• Built-in charge and discharge power MOS;The existing power management chip on the market all are HOTCHIP HT4928S which the parameters is same as134N3P
• Two versions are shipped randomly.Old Version charge status indication. Red light flashes when charging; Long red light when full;New Version has no lights.
• The step up charging board can be connected to a lithium battery and connected in multiple sections of lithium batteries, as long as the voltage is 3.7-5.5V in parallel(only be connected in parallel, not in series)
• Available for various batteries like Polymer ,18650 Lithium ,Cell Phone ,Tablet and MP3 Battery
• it has protection functions, protect from over-charger / over-discharger/ over-load ( support charger and discharger at the same time )