Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Same question: will this work to replace the bp-hp550 11/2 4v 550mAh? Sony MDR-RF970R headphones is what I have.
Document: This battery does not work and is not the correct replacement for sony bp-hp550. So don't buy it as it doesn't work, tips are too big.
Gives new life to my Sony wireless headphones. This is my second time buying these replacement batteries and they work great.
The product was used to replace a similar battery in a Sony earphone set.It is working as well as can be expected... As it should!
the battery is not a direct replacement for the sony equivalent. The positive terminals are too far recessed tomake contact with the terminals in the device the battery is intended for. I probably can make it work if I movifythe battery case to allow proper contact of the terminals.A bummer
The replacement battery has been installed and seems to be working fine. No problems.I have one question--- The number "700mAh" is different from the original (I believe it was "550mAh".but am not sure. It did not seem to make a difference in how the headset operated. )My order was handled in your usual efficient way and I received the battery very promptly.I am very well satisfied with all of the transactions I have had with Amazon.Joe T.Gilbert
The battery was the correct one - right model number. But it did not work. I fit into the remote Sony earphones but not exactly as the original battery. I made sure that the contacts were in the correct position but still the earphones did not work. This is after the battery had been in the earphones sitting on the charger for at least 24 hours.
This product works great. A lot cheaper than Sony. I use it on my wireless headphones, working and charging great!
Was glad to received battery and that it was the correct one to be used in the Sony Headphones that my husband uses at night to watch TV while I am sleeping.
The Sony replacement battery pack fit perfectly in the headphones .It has a long life and works great. I would recommend this product .
My Sony headphones died on me. They have had a lot of use in the past few years. This new battery brought them back to life and they are back in service where I can hear the TV with them and my wife with excellent hearing can hear it at her volume.
Answer: I purchased on as a replacement for the battery in my Mom's Sony MDR-RF970R headphones and it works just fine.