Operate 12v air pump using 12v 8ah battery with relay?

Hello guys I want to connect a 12v electric air pump to a 12v 8h battery with a relay microcontroller.   The air pump has receptacle for a cigarette lighter. Is it possible I can  remove the receptacle and connect the wires to the relay? I want the air pump to turn on every 15 minutes. The battery will be connected to the relay also. Sorry I dont have any electrical experience.  Any help would be appreciated

rickharris7 months ago

With no electrical knowledge I would buy a 12 volt timer unit.

See diagram for wiring. Click to see full size.

Amazon lists lots of timers.


iceng rickharris7 months ago

Nice circuit schematic Rick.

rickharris iceng7 months ago


Downunder35m7 months ago

These air pumps are usually dirt cheap and use a lot of power to produce little air.
If yours falls into this category than the pump won't run for long (or often) on a single charge of the battery.