Eneloop AA and AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries Bundle (8 Pack of Each)

I use triple A in Dcell carriers all over the house and vehicles. Mostly in Mag Light flashlights. Never had to throw away a ruined flashlight for years since I don’t buy non rechargeable batteries.

I use them mostly for battery powered candles. They are on a timer and used 5 hours a day. I have to charge them about once every 9 days or so. I’ve been buying these for years and now mark them with a market with the year I bought them. I’ve had some for about 9 years or more interchanging them

I bought these batteries to use in my various wireless keyboards/mice. They last a long time -- long enough so that I can't even remember when I installed them. I don't use these in high drain devices, because I basically want them to last a lifetime, and all rechargeable batteries will degrade slightly each time they are charged. I've tried less expensive rechargeables, and they don't come close to the Eneloops. If you never want to buy another battery for your keyboards and mice, get these.

Been using these for over a year now since I bought the 1st ones. They're definitely more economical than single-use batteries for motion detection lights and remotes. I can tell the difference as some batteries hold a charge better than others, but overall they've held up well.

I've bought many rechargeable AAs and AAAs over the years and these are the best I've ever found. They hold a charge longer than others (like if you charge it but then keep them on the shelf for months/years before using them), they will drain some like all batteries but less than I'm used to. I'm still using the same sets that I've had for maybe 8 or 10 years now and they're still working well.

I decided to run a test of how long these batteries last compared to standard AA batteries. In my test I used three AA's in C-cell adapters to run a Duracell LED flashlight. With three Kirkland brand AA's the flashlight ran on high for just shy of 5 HOURS. I let the batteries sit 24 hours overnight and tried them again the next day. They ran the flashlight for an additional 1.5 HOURS. With three freshly-charged Eneloop brand AA's the flashlight ran on high for 2 HOURS. After letting them sit for 24 hours overnight they could only run the flashlight for an additional 2 MINUTES. I did this test twice with different batteries and got nearly identical results each time. While they only last 40% as long as standard AA batteries and do not appear to be as resilient, I do like the fact that I am not throwing out or recycling as many batteries now. I keep extras on hand and tend to use them for things that are easy change batteries in or don't get used that often, like gaming remotes, Christmas decorations, flashlights, headlamps, etc. I don't use them for TV remotes or thermostats - regular batteries seem to last forever in those applications.

I have used these in a Sony Walkman radio for several hours/day for a week before recharging. The newer rechargeable batteries like these are light years from older technology rechargeable batteries. Don't have to worry about running out of batteries now. These retain most all of their charge, 90% for one year and 70% after 10 years. The opportunity to recharge up to 2100 times makes these a solid value. Will have to see how long these will really last, but so far happy with these.

My first set of these were bought in 2016 (I dated them) and are still going strong in my photography flash equipment, ten years of recharging! I have definitely gotten my monies worth. But it's time to change them up, I'll recycle them at the local car battery shop. These come in two flavors, I have both, so I selected the less expensive version since both work well.