DFTIM 2-Pack 10000mAh Rechargeable Battery Compatible with JBL PartyBox Stage 320 Model and Xtreme 4 Portable Speaker, Replacement Model Xtreme Battery 400, Upgrade Capacity 7.4V 74Wh

ParametersLithium Ion battery;
Voltage: 7.4V;
Capacity: 10000mAh;
Type: Li-ion, battery Comes with USB-C CableWhich You Can Charge the Battery By Connecting to A Portable Charger or Wall Charger. Also Compatible with Original Battery Charger.
^^ Compatible Models: Works for PartyBox Club Stage 320 Model and Xtreme 4 Portable Speaker, for Battery 400 Series Speaker; for Battery 400 is only compatible with the PartyBox Stage 320 and Xtreme 4 wireless Bluetooth speaker. ^^ Provide the energy for your speaker: with this battery to your PartyBox Stage
320. Each battery can be up to 18 hours of playtime, which means you could keep the speaker work enough long time for your party. With Smart LED Indicator Design, The Battery is Designed with Charging Indicators to Clearly Display Charging Progress. Green Indicator Stands for Charging While Red Indicator for Fully Charged.
^^ High Quality Manufacturing: battery has a built in smart chip, which provides Multiple Protection for your speaker, The lithium-ion battery comes with built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protection. Built-in circuit protection, enhances safety of usage and extends battery life ^^
Customer Service: Rest assured with 30 days Refund and 12 months Service; you can click on seller store on right corner ask a question and contact seller directly