Vacuum Pump Power?

I wanted to hook up an automated irrigation system of sorts, but the pump I've got just has bare ended wires. What is the best (cheapest/safest) way to power a 12v dc 8.1a pump? I've found a few adaptors, but they have max output of 7.5a. I also found some batteries, but they weren't cheap and they probably won't last long?

Irrigation with a vacuum pump? How is that going to work?

You're probably not going to find a wall wart style adapter with that much output. You're probably going to have to find a real power supply.

Here's one that does 12.5A