Sennheiser SET- 810 Battery - Replacement for Sennheiser BA151 Headset Battery (60mAh, 2.4V, NI-MH) Replacement Sennheiser SET- 810 Battery Replacement for Sennheiser BA151 Headset Batteries Lifetime Warranty Capacity: 60mAh, Upstart Battery Brand On Sale for a Limited Time!