I bought some AmazonBasics AAs for my old camera (Canon PowerShot SX100 IS). They last hundreds of shots on a charge.

https://www.amazon.com/dp/B00HZV9TGS/

Hmm. In Germany, I shop batteries at conrad.de - an electronic retailer chain. They're expensive, yes, but the stock is quality, you can get weird stuff like coin cells with solderable pads on them (which gets handy when you're repairing old stuff with soldered batteries!) and you can have them ship to the nearest store for pickup.

I think with batteries you get what you pay for.

It's a tragedy that there is no objective measure for gosh sakes - some last hours some last days. Can't tell from the label.

The name-brand batteries I get tend to vastly outlast the off-brand ones - Im amazed they can't put some kind of 'kWh' on their labels.