The Spark Battery Rechargeable Battery for Spark LIVE gives you up to 8 hours of continuous playtime so you can perform wherever inspiration strikes. With its rechargeable, swappable design, you'll never have to cut a set short or pass up a chance to jam. Simply pop in a fresh battery and keep playing. The Spark Battery's intelligent protection circuits guard against overcharging, over-discharging and short circuits, ensuring safe, reliable power for your Spark LIVE amp. Focus on your music and let the Spark Battery handle the power—you've got a crowd to move.