NINMAX Lithium AA Batteries 3500mAh 8 Pack 1 5V Longest Lasting Double A Battery for High-Tech Devices Non-Rechargeable

Testing the battery's voltage with a battery tester or DVMM is fine if you're trying to establish the output voltage. But the real test is when you check these batteries in a load-tester device. I keep all my batteries refrigerated and each battery container includes at least one or more humidity absorbent packets. I bought two, 8-count NinMax AA Lithium packs of batteries back in NOV 2023. When I received them, I left them in their boxes and immediately stored them in a Ziploc baggy along with several moister collection packets. I’ve been storing all my batteries that way for years. Then, when I went to use the new Ninmax AA Batteries recently, I first measured the voltage. The 4 new Lithium AA batteries that I got out from the NinMax package measured 1.77 Volts with my DVMM. However, I then tested all four AA batteries on an MBT-1 Battery Load tester and found that ALL 4 tested between 65% and 40%! The batteries advertised as having a long shelf-life and I felt that even though it had been almost a year before I opened the pack to use them, they should have been perfect because I had them stored in a refrigerator. I was disappointed with the Ninmax load test and blamed the battery’s quality for the poor load-test results. In fact, I wrote a review of the battery and noted the results of the load test. I also gave the batteries a low, 3-star rating. However, I later found out that when it comes to non-rechargeable, Lithium batteries, placing them in the refrigerator is exactly what I should NOT do!! Among the information I found when I researched the proper storage method for non-rechargeable Lithium batteries, was this statement: “Putting fresh, non-rechargeable lithium batteries in the refrigerator will not extend their shelf life; in fact, it is generally considered a myth and can potentially damage the batteries due to moisture condensation inside the fridge, so it's best to store them at room temperature in a cool, dry place”. Even though I did have moister-absorbent packets in the bag with the batteries, I must consider the fact that I may very well have caused these batteries to become weak by the way I had stored them. Therefore, I felt I should retract my earlier 3-Star review and offer my apologies for my ignorance to Ninmax. I feel must accept the blame for the poor load-test results as being due to incorrectly storing the batteries. I also must revert my product review to reflect 5-Stars, giving the fact I may have caused the poor results that I measured. Rich Read more

They are great batteries and great price. Got them for our blink cameras outside and they last way longer than the other expensive brand. Highly recommend, this is the second time purchasing. Read more

Great better than I expected both price , value and good performance Read more

***UPDATED*** I originally gave these a 2 star rating since they only last about a month but the company contacted me and offered a replacement set which I received 2 days later. They also explained that cold temperatures could have caused the batteries to die prematurely. It was January and had been very cold most of the month so I'm hoping for better luck with the replacement ones I received. I updated my rating based on the great customer service. Used these in a Blink Camera. First set lasted about a month and died them. Now second set is almost dead after another month...So 2 sets lasted 2 months. By comparison, the “name brand” lithium batteries I used before lasted a year for one set (2 batteries). Nothing has changed with the camera use so these batteries are not long lasting at all to be lithiums. I will not be buying again. Read more

I'm a guitarist and use these in my wireless transmitters. Normal alkaline batteries and rechargeables last about 6-8 hours. I've been using these freaking things since December 23, 2023 in 3 different wireless units! They JUST finally died 2 Saturdays ago! The only issue I have is, my battery meter on the wireless has a tough time reading how much time is left on these. When I started my show 2 weeks ago, the batteries were reading 10 hours....the highest number you can get....which it's been reading since December 23. In the middle of my set, my meter started blinking which means "change those batteries as soon as the song is over." Normally, you get an alert and see how much time you have left. Not with these. They last forever, but when they die, you have a matter of minutes before they totally die. Just be careful. Read more

this battery is dead on arrival maybe not all of them but some I have used I still have 14 to go and test it. The first 2 batteries I used were garbage and did not last 2 days on the doorbell alkaline batteries last for months at a time I was in touch with the seller who after a review that's a good after service are sending a new batch for free I told them it was not necessary but they are thank you ninmax Read more

It's been one week. 4 new batteries in an LED, indoor wreath and 1 of the 4 batteries is completely dead! The wreath is on a self timer 6 hours on 18 hours off. I put them in on Dec 7th and today is Dec 15th and the wreath did not go on. That one battery lasted 42 hours. Meanwhile a similar wreath, but outdoors with a different brand of battery, is still going strong. I don't understand why 1 out of 4 goes bad all 4 went straight from packaging to wreath. Seems like inconsistent manufacturing but I don't have an extensive battery background. Just letting you know my experience. I do not recommend. Read more

Delivered quickly. Package was nicely packed and batteries are top notch in my opinion. My third purchase of these batteries. Great value. Read more