jbl battery 600 with charging case jblbatt600chrgcaseEven the best parties have to end sometime, but your JBL PartyBox speaker can keep the vibe going twice as long with this JBL Battery and charging case. When your rechargeable battery is running out of juice, it takes just seconds to pop a fresh battery into the slot on the back panel. Meanwhile, the battery can recharge in the charging case so youre always prepared for the next event. Plus, you can also use the case as a powerbank to charge your