Keep the party going twice as long by having a spare JBL Battery 200 on hand. Just insert it into the battery slot in the back of your JBL PartyBox Club 120 when the first one loses its charge. Each battery has enough power for up to 12 hours of playtime, which means you could keep the party going for up to 24 hours.
Keep the party going twice as long by having a spare JBL Battery 400 on hand. Just insert it into the battery slot in the back of your JBL PartyBox Stage 320 when the first one loses its charge. Each battery has enough power for up to 18 hours of playtime, which means you could keep the party going for up to 36 hours.