Accord won't start, even with battery jump

Assumed dead battery but jump didn't help. Dash lights flash, makes clicky sound. No crank. Ideas?

2014, 31k miles. Wife's car. Babied. Under warranty. Dead at Target.

Uber sure is handy.

In reply to OHSCrifle:

A completely dead battery, like a dead cell, will do that. I've had it happen a couple times - starts fine once, the next time its DOA.

Dirty battery terminal connections?? Remove cables, clean w/battery terminal/cable end tool, reinstall, tighten, attempt to start/jump, report results.

Definitely. Battery terminals filthy on both cars. 2 liters of coke and a rinse are next..

After late Chinese takeout.

Either completely dead battery or dirty terminals

Bad starter with good solenoid or faulty connection between the two. You can bypass the solenoid, ignition, etc. by using the jumper cables directly on the starter motor (not the solenoid). If the starter is going to spin, that will do it. Tap it with a hammer and try the key again first just to see if it's a stuck brush or something.

There are other less likely things, like a hydrolocked engine, that will make the starter click, but not turn over. Turn the crank pulley to test that.

Clicking is low amperage to solenoid. Starter and solenoid is probably ok. As others have said battery or connections are most likely the issue

Coca Cola bath and rinse, towel dry then jump start did the trick. Full brass brush treatment tomorrow. Thanks GRM

Brown liquor time.

So what preventative maintenance is best for battery corrosion?

In reply to OHSCrifle:

Apply a heavy coat of grease (anything will do) to the terminals, the posts, and where the posts meet the case. Don't over tighten the terminal bolts (if you can't twist it on the post by hand it's plenty tight).

OHSCrifle wrote: Coca Cola bath and rinse, towel dry then jump start did the trick. Full brass brush treatment tomorrow. Thanks GRM Brown liquor time.

Your welcome, I have rescued many cars w/corroded terminals. Always carry a terminal/post cleaner in my car tool kit.

On our Highlander, it was a combination of the battery connections and the starter.

Smacking the starter worked for a bit, but it wasn't a good solution for the wife's rig.

Solenoid would click, but not enough to fully work.

Once my 80 Fairmont wouldn't start, so I cleaned the terminals. While I was out getting a terminal brush, I picked up a solenoid and a starter shim, in case I had to use the free Powermaster starter that I had, but always touched the flywheel. Success! Three days later, berkeleyer wouldn't start. Replaced solenoid. I hadn't realized that it had been cranking slow for a year until I put in that new solenoid.