How Long Does Arduino Last On 9v Battery. To power the Arduino you will need a battery. 1x Arduino Uno Amazon 1x 9V Battery Amazon 1x 9V Battery snap connector Amazon 1x toggle switch Amazon this one is a little different that that pictured but it will work the same.
By connecting it directly to the Arduino Vcc pin you are basicly frying it. Snap a battery to the connector. This is a great nifty tool that allows you to roughly check how much charge is left in a battery.
Answer 1 of 2.
It takes an input voltage as low as 08V and. Typical current consumption of the Arduino Uno is 45mA so if you have say 3 x AA cells each with 2500mAH capacity to give 45V to run the board then 2500 x 3 45 167 hours or less than 7 days. Now your Arduino will turn on when the switch is closed and turn off when it is open figs 5 and 6. The Vin port allows an input between 7 and 12 Volts but we recommend to use a 9V batteryDepending on your application you can input 12V too but make sure the current values stay around 500mA.
