With this optional rechargeable and replaceable battery for Spark LIVE, you can perform anywhere without needing to be tethered to a power outlet. Spark Battery provides up to 8 hours of playtime on a single charge. Easily swap it in seconds if you need even more play time. Power your Spark. With this optional rechargeable and replaceable battery for Spark LIVE, you can perform anywhere without needing to be tethered to a power outlet. Spark Battery provides up to 8 hours of playtime on a single charge. Easily swap it in seconds if you need even more play time. Play anywhere. Rechargeable. Replaceable. Swappable. Perform anywhere without having to worry about finding a power outlet. Play longer. Have an extra long set? The optional Spark Battery for Spark LIVE lets you play longer with up to 8 hours on a single charge. Plus, it conveniently charges while your Spark LIVE is plugged in, allowing you to jam and recharge at the same time.