Rechargeable AA Lithium Batteries with Box 3600mWh 1 5V Rechargeable AA Lithium Batteries for Blink 8 Pack Double

So far everything works well. We use them in our church microphones and they seem to last a good while. Will see how last they last. So far we like them. Only down side is that when we initially good them and charged them, one battery wouldn't take a charge. Read more

Finally a powerful rechargeable battery for my Schlage Digital door lock. Regular AA batteries don't work with digital door locks. Only the Energizer ultimate batteries work but are very expensive and last only for 5 months depending on door open/lock usage. I will see how long these batteries last with our normal door lock use. Read more

I have several devices I have to buy disposable batteries for because, up to now, the rechargeables (NIMH) would not work in them because it only supplies 1.2V output. Not sure when these came out but this is the first time I recall seeing them for sale. This particular set offers the most bang for the dollar in terms of capacity etc. that I could find among the choices on amazon. I was attracted to this one by the storage case/charger and the capacity for the price. From what I've read, these may not deal well with temperature extremes so it's probably not a battery for an outdoor device in the winter time but other than that they get good reviews from folks that have them. Any battery tech that uses chemical reactions will be affected by temperature, we do have some choices that handle it better than others but it's still a very expensive type of battery. In the last few years many older battery techs that have been too expensive for consumer use have been steadily reinvestigated to find better/cheaper ways to get to the same end result. I personally think we're on the brink of a really big leap in battery tech, we're going to have to do better to power the next generation of devices such as robotics and more. The military "big dog" program needs to get that boy off his gas generator for sure and they've been talking about portable rail guns for a few years now (not to mention the boston dynamics bi ped robots). This unit requires an additional 5v usb adapter such as comes with many tablets and phones and comes with a usb A to C charging cable (just plug it in, I believe a 3A adapter is recommended which is what comes with current phone models or you can invest in one of a huge list of products available on amazon many in the twenty dollar range). I bought a fancy new garbage can with a motion activated lid that rolls open and closed, it needs 1.5v because it's a motor, these are working fine so far only time will tell how long they'll last between charges (turns out a set lasts a little over two months in the garbage can which seems pretty good for how much it gets used). These arrived more than half charged it was only an hour or two before each cell showed full charge. The case is nice, each cell gets a charge indicator and it's also a nice compact case to store any you aren't using. With two sets I have a spare to swap into use while the other set charges or to use in something else. Read more

They lasted 4 days in my blink camera. I wasn’t expecting much but I am disappointed they didn’t last longer. Normal lithium batteries last months in my cameras. Update: 3 weeks later I left the batteries in to see if they would die completely and they are actually still working, my camera says still Low battery but works Read more

This whole setup is awesome. Charger still seems to be holding up/functioning really well. I've used the batteries in controllers, remotes, my navage, and the charge/battery length and power output holds up regardless of device placement. For the price these are the best rechargeable AA's ive bought so far. Read more

I DO SO LOVE THESE BATTERIES AND THE CHARGING PORT IS EASY TO USE, THEY INDICATE WHEN THE BATTERIES ARE CHARGING AND WHERE WITH BRIGHTLY COLORED LIGHTS INDICATING IT, YOU CAN CHARGE TWO AT A TIME IF REQUIRED, THEY SEEM TO LAST AND LAST FOREVER. I LOVE THEM, IN FACT, I'M GOING TO ORDER ANOTHER ONE BECAUSE IT SAVES ME MONEY ON BATTERIES. IF YOU WANT TO SAVE MONEY, THESE ARE FOR YOU. I HIGHLY RECOMMEND. Read more

left battery in a device out in the cold battery went dead , put batery in charger . the charger over heated and now does not work. battery are dead. Read more

I have tried various rechargeable batteries including Everyready and have found these to be the best. I have around 20 items that need multiple AA batteries ands change them out weekly. Customer service is 5 stars as well. Out of the 50 batteries I have, one wouldn’t hold a charge and the company sent me an apology and four new ones to replace it with. Who does that these days? Read more