I am wanting to use a 12V 18A rechargeable battery to power my project. I know that the arduino can handle 6-20V in the plug and Vin inputs. Is the amperage on this battery too high, and what is the best way to hook it up? Thanks to all.
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Yes it is Ah, sorry I left off the h. While I appreciate your input, it does it answer any of my questions.
scottycss2000:
While I appreciate your input, it does it answer any of my questions.
Yes it does:
spycatcher2k:
Amps are pulled, not pushed.
It doesn't matter what the supply's maximum amperage is, it doesn't foist those Amps on the device.
BUT....check that the 12V is actually 12V max. A car battery (as an example) is nominally 12V but actually almost 14V: the Arduino while being able to run to 20V has a recommended maximum of 12V, not 20V.
And to the second part of my question? Which would be a better connection, Vin or the power jack? Thanks
(deleted)
Ok, thanks for the help!
The area between the usb port and power jack on my arduino uno is heating up wichever way I hook up the battery. Any suggestions? Thanks
scottycss2000:
The area between the usb port and power jack on my arduino uno is heating up wichever way I hook up the battery. Any suggestions? Thanks
Use a lower voltage power supply. Remember the part about a 12 volt battery being 14 volts? The heat is the voltage regulator taking 14 volts down to 5. That extra 9 volts has to go somewhere. It goes into heat.
It always heats up, even with a 9v wall wart. If you are leaning 12v against it, it just gets worse. This is down to the crude on-board regulators. I submit you would be better off using a decent off-board 5v regulator. The prize will also include extended battery life. Every degree you feel is battery power you are wasting.