Sennheiser Replacement Rechargeable Battery for OfficeRunner Wireless Headset DW Office DW Pro1 DW Pro2 SD Office SD Pro1 SD Pro2 MB Pro Series Li Polymer 205mAh (1 Pack)

When I became a manager, I found an Sennheiser OfficeRunner in a desk drawer in my office, new in box. I doesn't fit our tech standard and was dead, probably being several years old. This batter was the first step in bringing it back to life and being the only one in the org with that headset.

My unit is over 12 yrs old, and was only charging to one bar. While there were discount batteries, given the longevity of the original, I went OEM. Charged to four bars over night - a good (sound) investment. Highly recommend. Be careful, the plug is in there firm and don’t break those small wires - I was concerned, but everything went well.

Bought it to replace the battery in my headset at work. Lasts a long time between charges.

It works just fine. I was getting a lot of interference with the headset and thought it was the battery going bad. The issue still exists, so it has to be the headset.

This replacement battery worked exactly as I expected. Nothing more... nothing less. So far, the headset is being powered just fine. Easy install... no fuss. Good replacement battery.

The battery worked well for about 6 - 8 months, and then it wouldn't hold a charge very long, and I have to charge it multiple times during the day. It's best to just pay the money for a genuine Sennheiser battery. My original batter lasted for 5 years before it stopped holding a charge for a long period of time.

I'm on the phone all day and it stays charged for at least 10 hours.

Easy install and working great!