My riding lawn mower has not been started for about 2-3 years now. I did not expect it to start when I tried, but I am now trying to diagnose why.

When I turn the key, there is no noise or anything. No clicking, just nothing.

I assume the battery is probably dead after sitting that long. I dont have an electrical meter reader, but would this be everyone's first thought?

Any insight would be appreciated.

Thank you.