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

These batteries work exactly as expected—strong, long-lasting power and very reliable. I’ve used them in a variety of devices like remotes, clocks, and toys, and they hold up really well. No leakage or early drain issues at all. It’s also a great value for the quantity and performance you get. I’ll definitely be buying these again when I need a restock!

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.

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!

As advertised

I bought this 389/390 battery for an old calculator called “Life Long”-works again, finally!! This is my fourth battery purchase to get a battery for this calculator to make it work again. I bought a less expensive Energizer one from another company on Amazon, battery took a while to get to me and then when I tested it in the calculator and then with my battery tester, it was dead. I did a return/replacement through Amazon and got a second one-also dead. I bought one at the grocery store, also Energizer, also dead, that one had a Use by date of 2/2028, the other 2 had no Use by dates, just copyright dates of 2021. So, don’t waste your time going with the cheaper one, $5 for this one really isn’t a bad price. I only wish I would have chose this one originally.

Get the right size, it works fine.

Problem wit searches on the internet or in Amazon. You search on a specific part number like a battery. It comes up with, you hope, compatible batteries. But no. It’ll try to show you other batteries that are not compatible. And you don’t know. You have some generic batter number. You don’t know what the Duracell or Energizer equivalent number is. So beware. Do your homework and make sure the battery is compatible and that the Amazon result you clicked on is actually what you were looking for. After being steered wrong and buying a batter that was too thick, I ordered this. 2 so I’d have a backup. Only complaint is that the thing is small. Even with its cardboard, it’s about half the size of a playing card. And only a little ticker. I ordered two. They came in a big cardboard box about the size of a shoebox. It’s like shipping a pillow in a big ocean going metal shipping container. Overkill. But, because it’s a battery, I suppose there are probably hazardous material rules they must follow.

Pk