Positive Grid Spark Battery Pack

The addition of a battery pack frees you of power cords and allows you to play anywhere you see fit.
I have only been playing at practice volume levels admittedly but the battery life is impressive. After around 6 hours use the indicator in the Spark app only shows a slight decrease from full capacity.
I am really pleased with the battery pack and no trailing cords in the living room!

This made my Spark 2 portable, so in addition to being a bluetooth speaker for the wife, I can grab it and practice anywhere in the house. I used it as a PA for a video shoot and did not have to charge it once. The battery lasted for several hours.

Great product which gives hours of use - works as per specification - recommended.