Duracell 389/390 Silver Oxide Button Battery, 1 Count Pack, 389/390 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More

I had to order this battery b/c the battery in my calculator was starting to get weak. To get this specific battery I had to order it b/c I couldn't find it in any store and I couldn't use any other kind or type. My calculator works fine now with new power.

I like to fix things, not buy new things. I've had my old Casio desk calculator for maybe 10 or 15 years now - it's like an old friend. It's a Two Way Power model, so if I get the solar cell under a good light it will run, but sometimes my office is just not that bright - hence the need for battery power. There were so many 389/390 batteries to chose from. I just decided to go with Duracell - that's been a good battery for me over the years. When it arrived, there was no date of any kind on the packaging. I popped the battery out and it was at 1.59V with no load. That was good enough for me. I replaced the battery and I'm good to go. 5 Stars for what seems like a nice fresh battery.

I was challlenged to select the correct size battery I needed but the site allowed me to match exactly what I needed.. very helpful option and the battery works well

Easy to install

Battery replacement for an old solar calculator. Worked perfectly.

Received when expected and it works. Thank you.

Did the job at affair price.

This battery is quite reliable and long-lasting. I used it in my watch during a recent trip, and it worked well the whole time. I also needed it for my calculator at work, and it lasted longer than expected. By the way, have you seen the new action movie that just came out? The special effects were fantastic!