Click or scroll to zoom Tap or pinch to zoom Thumper-Lithium Battery by Relaxacare $79.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Replacement battery pack compatible with Thumper Lithium massagers. SPECIFICATIONS 60+ Minute run time 10.8V, 28Wh Lithium Ion battery Package includes one lithium battery