I have a 10 year old Vtech phone that I love. The battery stopped holding a charge so I purchased this as a replacement. The battery does work and my phone is back in business so I am happy, but what keeps this from being a 5-star review is the fit. The battery seems to be slightly fatter than the factory unit, so the battery cover in the phone doesn't quite fit right. I can force the cover on so it is serviceable but it looks like it wants to pop-off. Still it beats the heck out of a new phone and is working fine so I do recommend this product.