Hi-Capacity batteries from Battery-Biz are the highest quality portable power products you can buy! The batteries are made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure the maximum levels of battery safety, reliability and efficiency.Customer Review: Sony replacement battery
What can one say about a battery for a cordless phone? It works and charges okay in the old Sony SPP-120 phone I have. Sony says to only use an original Sony battery which costs much more to buy. This battery seems to work the same. Unfortunately, the telephone doesn't work right even with this battery. The handset can't seem to find the signal from the base because of too much noise. It keeps scanning for a better channel and doesn't find one. I don't think it is the battery's fault, though. I had this phone for many years (since 1991) and used it until the original batteries went dead. Then it sat in my closet since I ordered this battery. Now the battery powers the handset, but the phone doesn't work as I wanted it to. I know there are many new phones out on the market now, but I liked this phone and wanted to use it. I paid over $160 for it in 1991. Sony has little help for me. It may be that all the new signal frequencies being used now interfere with this phone that uses lower frequencies. If this has anything to do with not using a Sony battery, I would be surprised. I don't believe the noise level of the phone is dependent on the battery specs. The original battery said 4 volts @ 500 milliAmps on it while this one says 3.6 volts @ 650 milliAmps. It actually measures 4 volts without a load on it (I measured it). To sum it all up, this battery is a good deal for the price and I see nothing wrong with it.
