Minor change would earn a 5 star rating
The batteries themselves are working great and hold a charge for about 10 days using it three times a day.<br /><br />The one thing I would like to see changed is the metal tabs they use on these batteries, they are too flimsy and it certainly would help the installation process if they were longer as they could easily be trimmed after soldering them in place. Even though I used solder wick to clean the holes completely trying to maneuver the tabs through the holes would be much simpler if they used tabs that were a bit longer and more sturdy.<br /><br />One last thing about the installation, if you find that your toothbrush vibrates a little louder than it did before you changed the batteries, wrap a couple of pieces of electrical tape around the plastic housing which holds the batteries. I'm not sure if the batteries are just a tad smaller or not but mine buzzed a little before adding the electrical tape.  Now all is well!
Rating: 4 stars