Voniko Ultra Alkaline D Batteries, Batteries D Size 8 Pack, 10-Year Shelf Life and 6-9 Times The Power as Carbon Batteries, Type D Battery 1.5 VoltThe Nordic Swan EcolabelThe Nordic Swan Ecolabel

I bought them as a backup battery for when my pet feeders might go offline. I previously used "rechargeable batteries", but I didn't like that when I checked the systems every few months and removed power, the batteries always showed "1/3 or less" roughly of power, or expected charge. Of course, I would then put the batteries back in the charger, and the charger said "These are full, bozo", which told me they had such low "charge", that I could trust them to sustain my pets lives if I were out of town for two days when the power went out, which happens, historically in my area, for "minutes" every decade, but you never know when a hurricane ( I live about 15 miles inland of the Atlantic Ocean on one side of me, and just over three miles the St. Johns River, "as the crow flies", on the other side of me in Florida) will take out power for a few days, or longer ... These always show, basically, a "full charge" when I test my feeders. I have backup feeders for the battery backups and, everything is duplicated, ha, but I didn't need all of my feeders to go dead, say in 18 hours or so of "constantly drawing a little trickle." and moving the mechanism a few times a day, unlike an flashlight, where you manually switch it on for a few minutes of use at a time, maybe. I also got the 9 volts for my smoke detector backup batteries to my hardwired systems. So far, I am very pleased with this brand!

Great batteries ... would buy again.

I've spent 70+ years wasting money with buying batteries, especially cheap so called marketing company batteries. Well, as life would have it, I've found a battery that does exactly what it promises it'll do and had to wait until I was 79 years old. No more Rabbit batteries, no more rechargeable batteries, no more "yellow" batteries (you know who I mean) that never seemed to last more than a few weeks. These batteries perform as promised and plus some, it's true about what the old saying is, "you get what you pay for." I am more than satisfied with these batteries, that I sent my two sons, daughter and grandchildren a box of them. The enclosed note said "your Birthday/Christmas gift early."

effective, appeared to last but not sure if price is right. no real savings from what i can tell. But you do save some just not a great deal.

This is the third time I am buying this size Battery, but I have bought other sizes in the past and use them every day.

My second purchase of these batteries and they work as well as the name brands. Shipped quickly and very well packaged. Buy with confidence.

They work just like batteries are supposed to. don't see any thing else that would be helpful

I like that the 8 Voniko D batteries come wrapped in plastic that are 4 units of 2 batteries each, which is what I need for my tankless water heater ignition. They have worked well so far.