Compatible with JBL PartyBox Club 120: The JBL Battery 200 is only compatible with the JBL PartyBox Club 120. Other speakers in the JBL PartyBox series have different battery requirements. Keep the party going twice as long by having a spare JBL Battery 200 on hand: Just swap out the battery in the back of your JBL PartyBox Club 120. Each battery has up to 12 hours of playtime, which means you could keep the party going for up to 24 hours. Guaranteed JBL Quality: Give yourself the peace of mind that comes from a trustworthy, reliable JBL Battery 200 that's guaranteed to work with your speaker. Fast charge: 10 minutes fast charge will give your JBL PartyBox Club 120 another 80 minutes of playtime. Monitor playtime in the JBL PartyBox App: Just use your JBL PartyBox app to check the health of your JBL PartyBox Club 120’s current battery. When the Battery State of Health (SOH) reading lets you know it’s time, replacing the battery takes just seconds.