Step Up Boost DC-DC Converter 0.9-5V to 5V 600MA USB Output Module transceiver just like your phone in

just like your phone in silent mode

Supported OS

SCL → A5

For 4 standard size 18650 battery

The module can be jumper activated to set a high or low level

Step Up Boost DC-DC Converter 0.9-5V to 5V 600MA USB Output Module transceiver just like your phone inModule Properties: non isolated step up module (BOOST) input voltage: 1 5V Output voltage: 5. 1 5 . 2 V Output Current: Rated 1A 1. 5A (single lithium input), the maximum 1. 5A (single lithium input) Efficiency: Up to 96% (the higher the input voltage, the higher the efficiency) Switching frequency: 500KHz Output ripple: 30mV (MAX) 20M bandwidth (input 4V output 5. 1V 1A) Voltage indication: LED lights with load (input voltage less than 2. 7V LED