they work
These are AAA sized batteries. I installed them in a Water-Pik toothbrush and they work fine.<br /><br />Update: 11 months after installation they are starting to fail. This may or may not be the manufacturer's fault. When I installed them, I accidentally shorted the batteries for a few seconds. Still it's disappointing that they didn't last longer. Even though they didn't last very long, I expect to reorder this battery pack in the near future.
Rating: 4 stars