37V To 5V 1A 2A Boost Module Diy Power Bank Mainboard Circuit Board Built In 18650 Lithium Battery Protection Ic Double Usb Output Over Current Voltage Under

Features : 1. 4 level LED lights show electricity, non-working state smart automatic shutdown 2. Built-in lithium battery protection IC, overcurrent, overvoltage, undervoltage protection 3. Dual USB output 4. Motherboard size : 69 x 32 x 8mm(L x W x H) Product basic parameters : Input port : Micro USB (Android port) Input requirements : 5V constant voltage power supply can be used for charging input power, the most matching charger is 5V 1A or more Output port : USB Output parameters : 5V 1A / 5V 2A Requirements for rechargeable batteries : Available battery(3.7V-4.2V polymer lithium battery) : 18650 battery, mobile phone battery, flat battery, MP3 battery, can choose single cell power supply, or multiple cell parallel power supply(does not support the series). (Note : increasing capacity in parallel and increasing voltage in series, can only be used in parallel.) Can be connected in parallel with 2-6 pcs 18650 batteries... Batteries are not available : Dry cells, batteries, 1.2V recha Lees meer over de 37V To 5V 1A 2A Boost Module Diy Power Bank Mainboard Circuit Board Built In 18650 Lithium Battery Protection Ic Double Usb Output Over Current Voltage Under van huismerk in de productgroep elektronica