Make your pump fully portable with one of our lithium battery packs. This battery will run one of our pumps for between 1.5 and 3 hours depending on the model and your specific activity. This battery comes with a 12V female accessory plug and the connectors shown to also charge your cell phone or laptop computers. NOTE: This battery turns off automatically in 30 seconds when the pump is not actually running. This is a safety feature. Built-in power percentage indicator and voltage indicator including voltage draw. This battery is 15699mAH/57.7WH. Charging is via a USB charger (not included) or the included 12V car accessory plug.