working just fine and the only problem is corrosion.
I would spend $3 and get some of those red and green disks that go on the battery posts under the terminals. Then if you didn't do so before I'd dunk the terminals in baking soda and water the neutralize the acid. Make sure you rinse that off when no more blue/green gunk bubbles off.
Then if the corrosion prevention disks don't come with a corrosion inhibitor (they may or may not) I would either buy a $10 can of CRC battery terminal corrosion inhibitor spray and use that or you could even smear some Vaseline on the terminals and reattach them to the posts to prevent corrosion from coming back.