During the dec 2010 snowstorm in WV, our batteries didnt last 2 days. 3 of my 4 flashlights went totally dead.
The snowstorm was mostly a surprise, so we didnt have enough food on hand.
That’s why I also have the wind up kind, solar kind too.
P.S. those solar walkway lights, make a good flashlight...
I can turn on some of my LED flashlights today, leave them on and come back in two weeks to a still burning flashlight, even the little AAA key chain light at this site will give you 11 hours of a perfect (regulated) 10 lumens, and then 10 more hours of decreasing but usable light, all on a single AAA battery and on your key chain.
All of your dead batteries would supply my LED lights for a long time, I even have a box for dead batteries that I pull from the other things, to use in my flashlights.
Here is that link for the LED flashlights.
https://www.fenix-store.com/product_info.php?cPath=22&products_id=435
Check the Dollar Store if there's one convenient. Sometimes they have emergency candles at rock bottom prices.