Battery type BA150, BA151, for Sennheiser wireless headphones
Cameron Sino Battery Ba150, Ba151 For Sennheiser A200, Hdi302, Hdi380,hdi490,is 150,is 300,is 380, R150, Ri 150,ri 250 ,ri250s - Digital Batteries - AliExpress
BA150 BA151 BA 150 BA 151 BA 152 Battery Replacement for Sennheiser Headphones 881314436941 | eBay
Sennheiser BA 151 Rechargeable Battery for Wireless Headphones | Reverb
Ba151 For Sennheiser Set 250 Set 810 Headphone Battery - Buy Wireless Headphone Battery,Headset Battery,Bluetooth Headphone Battery Product on Alibaba.com