4000mah Losoncoer 4000mah Sun-inte-260 For Jbl Partybox 100 Speaker Battery - Digital Batteries - AliExpress
Amazon.com: Partybox 310 Portable Wireless Bluetooth Party Speaker, RGB LED Rechargeable Party Box Speaker, IPX4 Splashproof Easy-to-Grip Handle and Robust Wheels, Includes LED Disco Lights : Electronics
18" PA DJ 4000 Watts Max Power Active Speaker Built-in Battery/Bluetooth/Amplifier/SD/USB/FM Radio - Walmart.com