Lithium 12A-BS battery comes with a 2 year warranty. Free shipping to US inner 48 The YTZ10S-BS 12v lithium ion motorcycle battery by Banshee is a direct replacement for your current 12A-BS batteries. The Banshee 12A-BS is a completely sealed motorcycle battery and also extremely lightweight. When you purchase a Banshee 12A-BS lithium battery you will be getting only the highest level of performance available. Our lithium motorcycle battery lasts up to three times longer than traditional batteries and has a low self-discharge rate making it able to start with extended periods of storage. It's not a battery, it’s a Banshee.