ITEM NAME:3.7V Micro USB Lithium Li-ion 18650 Battery Charger Module Boost 5V Step U MKS.(The maximum output reference current is 5V 1.4a, 9V 0.8a and 12V 0.6a. Raise pressure counterclockwise. We'd like to settle any problem in a friendly manner. But without blocking the output the output is still 2V).
