JBL Battery 400 for Partybox 320 Brand New Sealed

The JBL Battery 400 is an official, swappable lithium-ion battery (10000mAh, 74Wh) designed specifically for the JBL PartyBox Stage 320 and JBL Xtreme 4 speakers. It allows you to quickly swap out a depleted battery in seconds and features fast-charging capabilities that provide up to 2 hours of playtime from a 10-minute charge