Sweetbunfactory/Getty Images When money is tight, many people take steps to save wherever they can. This can include everything from adjusting the grocery budget to looking for deals on everyday items. It can even mean buying automotive parts from third-party sellers on the internet. But when it comes to Electric Vehicle (EV) batteries, which you shouldn’t try replacing yourself, the problem with buying from eBay is that you just don’t know what you’re going to get. Unlike a ne...