Review on Duracell 303/357/76 Silver Oxide Button Battery Pack - Long-Lasting, Reliable Power - 3 Count by Colleen Guaydacan

I only gave three stars because they didn't say it was too big for HP calculators. There were too many problems to send them back. Maybe someone in the family can use them for something else. The price was very low. As for HP calculators, non-genuine batteries are problematic. Hearing aid batteries only last a week. Prescribed batteries are $10 each, and it's unknown how long they will last. The batteries that came with it lasted for years. My answer to the problem? I downloaded the HP app for my phone for $0.99 and it works great. There is a $16 version that I can try later if the current features don't work.