Power up your Marshall Emberton and Emberton II speaker with this high-capacity 7.4V lithium-ion replacement battery. Featuring a robust 3400 mAh capacity, this battery ensures extended playback time for your favorite tunes. The sleek blue and black design matches the premium aesthetics of your Marshall speaker while providing reliable power performance. This battery is specifically engineered to meet the exact voltage and capacity requirements of Marshall Emberton series speakers. The compact form factor ensures a perfect fit in your device, making replacement quick and straightforward. Keep your music playing longer with this dependable power solution that maintains consistent output throughout its charge cycle.