2x Battery for Sennheiser EKI 830; HDI 830; RR 840, 4200 BA 300, BA300 (150mAh, 3.7V) from CELLONIC

The batteries are used in Sennheiser headphones. They fit perfectly. We hope they will provide reliable and long-lasting performance.
Service: Unfortunately, we did not receive an email notification to let us know when the delivery was on its way. This is very important, as the post office simply leaves the parcel in the letterbox without ringing the doorbell. After all, it needs to be delivered quickly. We would be very grateful if a little more attention could be paid to this request.

Verified purchase

First purchase and pleasantly surprised. I do not usually leave ebay but the store is highly recommended. Better price than on ebay and very fast shipping to the Canary Islands without any problem with customs (with "normal" Post Office) and the processing and shipping time of the order is less than 24 hours. The batteries work as the original did at the time. They are a quality replacement with 100x100 compatibility with my Sennheiser. Very satisfied.

First purchase and pleasantly surprised. I do not usually leave ebay but the store is highly recommended. Better price than on ebay and very fast shipping to the Canary Islands without any problem with customs (with "normal" Post Office) and the processing and shipping time of the order is less than 24 hours. The batteries work as the original did at the time. They are a quality replacement with 100x100 compatibility with my Sennheiser. Very satisfied.

Given the type of battery, it arrived exactly as requested, I mounted it on the device, completed charging, after which everything worked smoothly, just as it was supposed to, and unfortunately with other suppliers this was not precisely the case.

Verified purchase

First purchase and pleasantly surprised. I do not usually leave ebay but the store is highly recommended. Better price than on ebay and very fast shipping to the Canary Islands without any problem with customs (with "normal" Post Office) and the processing and shipping time of the order is less than 24 hours. The batteries work as the original did at the time. They are a quality replacement with 100x100 compatibility with my Sennheiser. Very satisfied.

Fast delivery, despite inquiries from the shop because there were ambiguities with the address - so far everything ok Fit into the RS4200 as specified. What the batteries can do and how long remains to be seen. But at the price you can't expect miracles either.

Given the type of battery, it arrived exactly as requested, I mounted it on the device, completed charging, after which everything worked smoothly, just as it was supposed to, and unfortunately with other suppliers this was not precisely the case.

Verified purchase

Everything is perfect. Order received before the expected delivery date, product as described and therefore I am very happy. My SENNHEISER headphones have found a new lease of life. Thank you very much. Cdlt

The batteries are used in Sennheiser headphones. They fit perfectly. We hope they will provide reliable and long-lasting performance.
Service: Unfortunately, we did not receive an email notification to let us know when the delivery was on its way. This is very important, as the post office simply leaves the parcel in the letterbox without ringing the doorbell. After all, it needs to be delivered quickly. We would be very grateful if a little more attention could be paid to this request.

Verified purchase

First purchase and pleasantly surprised. I do not usually leave ebay but the store is highly recommended. Better price than on ebay and very fast shipping to the Canary Islands without any problem with customs (with "normal" Post Office) and the processing and shipping time of the order is less than 24 hours. The batteries work as the original did at the time. They are a quality replacement with 100x100 compatibility with my Sennheiser. Very satisfied.