9v battery snap is attached with DC male jack connector and makes a most convenient way to give 9V DC power to any board and device. 9v battery is one of the cheapest and most convenient ways to give supply, attached DC jack makes it more useful to connect directly from 9v battery to Arduino or other Boards and device.
Buy battery connector + DC male power jack from RoboElements at best price and high-quality material.
7404 IC – NOT Gate Hex Inverter
1-Channel 5V Relay Module for Arduino
TM1637 4-Digit 7 Segment LED Display Module for Clock
GBJ3510 1000v 35A Bridge Rectifier
GBJ2510 1000V 25A In-Line Bridge Rectifier
ADC0809 8-bit 8-Channel ADC Analog to Digital Converter IC
5pcs 1N5822 30V 3A Schottky Diode
5pc 1N4732 1W 4.7V Zener Diode
3.7V Lithium Ion Battery Level Indicator Module
5.5mm DC Power jack Female Power Breakout Module
CP2102 USB to TTL USB UART Serial Converter Module
3.5mm Audio Jack Stereo Connector Male
IRF4905 55V 74A P-Channel Power MOSFET 



