I hope these last as long as the original batteries. When researching, I learned the batteries should be changed at least once a year. Not true because I am just replacing the original batteries that came with the phone set and I purchased the set about 7-10 years ago from xxxxx. Regarding the replacement batteries, so far so good. My first conversation was with two friends from the past and total time for both calls was over five hours with time to spare. The sound was also very clear. I thought I need new phones when in actuality, I only needed new batteries. I would definitely recommend these to anyone! "Superb" is my rating.
We purchased these to replace exisiting phone batteries that would die after 10 minutes of use. So far they are working great. We have only had them for about a month which is the reason for the "good" rating. But they are working very well so far!
I rated this a four star because the only issue is that this is deceiving. I thought I would receive the actual Panasonic battery, but instead I received a generic, no name brand battery. Other than that, the battery does fit in the phone, no issue there.
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