3 ms·Your 2004 Prius has a lead acid battery, hows that for "low lifespan" battery?by mrguyorama 3y agoYour 2004 Prius has a lead acid battery, hows that for "low lifespan" battery?callalex 3y ago2003 was the last model year without lithium ion, and the years before that were nickel-cadmium, not lead-acid.oblio 3y agoLOL. No EVs since the invention of Li Ion used lead acid. Lead acid just wasn't fit for a mass market car.