Power wrongly Arduino nano

Other Hardware General Electronics
1

I accidentally Powered wrong my Arduino nano by soldering 7.5v battery positive to +5 out pin instead of Vin. Also with same connected opposite terminal of battery too.
Now after realising when connecting correctly by battery negative to gnd and positive to vin point the Arduino is not lighting up. Also i noticed when i connect a led to gnd and +5 out pin the led works and while being connected Arduino led also lights up. Not sure what is this behaviour.
Is my Arduino destroyed?

Also, can you please tell can I connect 11.1v 2200mah lipo battery to Arduino nano?

2

Throw it away.

Use the Vin pin for this connection.

BTW

Do not try to power large loads from your Nano’s 5V pin.

3

can I connect 11.1v 2200mah lipo battery to Arduino nano? - This is for the input of Arduino nano in vin pin.
I have to use this battery in a drone where I am using nano.

4

You can power the Nano by connecting 7 to 12V to the Nano’s Vin pin.

5

A fully charged 3S 11.1volt battery is 12.6volt.
At that voltage you can't power anything else from a classic Nano.

Maybe you should include a 5volt buck converter.
Or switch to a Nano Every, with built-in buck converter (no experience).
Leo..

6

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