Sennheiser Replacement Rechargeable Battery for OfficeRunner Wireless Headset DW Office DW Pro1 DW Pro2 SD Office SD Pro1 SD Pro2 MB Pro Series Lithium Polymer 205mAh 2 Pack

Purchased this to address an issue with my Sennheiser headset disconnecting from its base without warning and to allow for longer talk time after two years of heavy use. It performs as well as the original battery performed when the headset was new. If we are still using these headsets in another two years I will probably come back to buy this again.

I ordered a set of batteries to replace my headsets that my employer gave to me under previous management. When I had problems with the batteries in my old set, they opted to buy a new, but much cheaper headset. It was awful.. couldn't get more than two feet away from the "dongle" without signal issues. Fortunately, these batteries brought my old headsets back to life, and now I'm able to use my good Sennheiser headset again!! Worth getting these batteries if you're experiencing shortened life, the bars suddenly going from half to dead, etc.

What's to say - good price and works well. Makes my Office Runner happy, seems to even help with the range (not sure entirely why that would be - most likely because a longer range needs a stronger battery) and most especially makes me glad to be back again at around 12 hours of use.

Works great with my DW Pro 2. I’ve had the same headset for 2 years and haven’t replaced the battery. My original battery was starting to die after less than 1 hour of talk time (I have about 7 hours of talk time per weekday). This new battery holds a great charge. I only charge my headset overnight and while I’m at lunch. Since installing the new battery 4 months ago, I haven’t had a low battery warning at all.

Battery is still strong after 1 year of use. I have had my headset for 5+ years. Have used these batteries whenever a replacement is needed. - you can tell because the quality of voice recognition (when used for that) will get bad.