what is the battery usage life?? Thank you

I use it Monday-Friday for 6-7 hours in a 10 hour day and I get about 2 years.

Will this work for the PCX550 wireless headset?

Hi there, Good question! We are unsure if this is the battery required for your PCX550 wireless headset. From the manual for the Sennheiser PCX550, "the rechargeable battery must only be replaced by an authorized Sennheiser service center." This usually means the battery is hard-wired into the headset and not accessible for replacement without service help. This also means we are unsure which battery would replace it. This battery would most likely have to come directly from a Sennheiser service center. To find a service center, give Sennheiser a call at 1-877-736-6434. Thanks again! And please let us know if we can offer any additional help. Best Wishes, Kamika Royal Headset Advisor Leitner Headsets Customer Service: 800-432-3738 Fax: 800-457-0467

I have a sennheiser officerunner® convertible wireless office headset with microphone model dect 6.0. is this battery compatible?

Hey there T. Fenske, Great question! This battery is 100% compatible with your Sennheiser OfficeRunner!

what is the battery usage life?? Thank you

I expect it will depend on how much you use the headset, since the battery life would likely be affected by charge/discharge cycles. I've had my headset for more than 3 years and the original battery still seems fine. In fact, I thought it was going bad several months ago, but there was something on the charging contacts that was preventing the battery from charging completely, and cleaning the contacts seems to have taken care of it. My headset gets moderate use only. I don't know how long a single charge lasts. My longest calls are about 2 hours, and the charging status bars typically show 2/4 at that point.

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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

Product ID: 742124961

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Details

Number of Batteries
2 Lithium
Brand
Battery Cell Composition
Lithium
Battery Capacity
205 Milliamp
Recommended Uses For Product
Ear Tips

🔄Easy, tool-free installation

🔋205mAh Lithium Polymer power

⚙️German-engineered quality

Description

🔋 Stay charged, stay connected — power your productivity with Sennheiser precision!

POWER THAT LASTS - Reliable 205mAh capacity keeps your headset charged through long workdays.
DOUBLE THE BACKUP - Includes 2 batteries so you’re always ready, never caught powerless.
ENGINEERED EXCELLENCE - Crafted with precision German engineering for premium durability and performance.
SEAMLESS COMPATIBILITY - Perfectly fits all Sennheiser OfficeRunner and Pro series wireless headsets for hassle-free replacement.
PLUG PLAY CONVENIENCE - Effortless installation means zero downtime—get back to calls in seconds.

This genuine Sennheiser replacement battery pack features two 205mAh lithium polymer batteries designed specifically for OfficeRunner and Pro series wireless headsets. Manufacturer-approved and engineered in Germany, these batteries ensure reliable, long-lasting power with easy installation, keeping professionals connected without interruption.

Specifications

Cable Feature	No cable
Compatible Devices	ヘッドセット
Batteries Included	Yes
Batteries Required	Yes
Brand	ゼンハイザー(Sennheiser)
Manufacturer	Sennheiser
Item Model Number	OfficeRunner Battery
Connectivity Technology	Wireless
Size	2 Pack
Package Dimensions	9.8 x 6.6 x 1.4 cm; 4.54 g
Item Weight	5 g

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