The JVC BN-R5000 rechargeable lithium-ion battery pack is the perfect companion for your Boomblaster RV-NB200BT and RV-NB300DAB, providing a powerful 5000mAh capacity and 18.50Wh output. Its compact and lightweight design makes it ideal for on-the-go use, ensuring you can enjoy your favorite music for hours without being tethered to a power source. Whether you're hosting a backyard party or enjoying a day at the beach, this battery pack guarantees reliable performance and seamless compatibility,