Since this is Carproblemsmonkey... My wife's Elantra won't start. I've previously removed the battery and took it to THE ZONE and they recharged it, as it was dead, and then tested it, and said it was good. The car started right up and ran fine for a month since then. Yesterday, she didn't drive it, and now it's dead again. Is it fair to assume that it's probably the alternator that's gone bad? What other obvious things can I try? The start problem is clearly from the battery, and not the starter side. It'll wub...wub..wuuub...vrooom, just like you'd expect a weak battery to do.