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Im truck driver and parked my car in the company yard for couple weeks. Today I came home, started my car and drove to store to get a couple items. I came out later and car wouldn't start like totally dead. I used my booster pack and it wouldn't start, another guy tried to give me jump start and still it wouldn't start. Finally my brother came and we push started it. I drove back home and shut it down my driveway, went to restart it and it started up just fine, several times.
I wonder what was wrong? Battery is fairly new and I drove it from company yard to the store good 20 miles or so, battery should've had enough time to recharge.
i think when I come home next time I'll load test battery and maybe check starter, remove it and take it auto parts store to check it on their test bench. Anything else I can do?

Check the battery wire at the starter for corrosion.

I would check the ground connection as well as the ignition switch.

If you didn't hear any noises sounds like ground. Otherwise could be sticky solenoid, a whack with a hammer can dislodge it temporarily.

I load tested battery and it showed that it was not holding charge, recharged it and so far its been able to start the car.