Add an extra battery to your system and increase your play time for 5 hours of fun! Each fully charged, 12 V Lithium Ion battery will last 2+ hours. Reduce your chances of being in the dark by adding an extra battery to your system. A water resistant, silicon skin encases the battery which is enclosed in a durable nylon sleeve. A thumb screw creates a water seal to protect the electrical connection and easily fastens to NOCQUA "Y" connectors, In-Line Switch, and light bars.