CHU4 USB Charger with 4 x 1.5v 3000mWh lithium li-polymer li-ion AA rechargeable batter for LED falshlight Digital camera Microphone (with 4AA batteries)

For electronic devices that uses a rated 1.5 volts, this is the option instead of alkaline or lithium. A bit heavy than lithium, but lighter than alkaline battery. The endurance is as advertise. They will produce 1.5v the hole time, until they finish its charge. So have in mind to have spare, since they do not tend to tell when they will quite. Also note that the testers will also not work with these. Remember, these will show 1.5v the hole time until depleted. They have no memory. They charge really fast. Also note, that you have to buy the charger from Kentli. These batteries will not charge with any other charger.I use them in aviation headsets. I was really disappointed to know that these headsets would not work with rechargeable batteries. Only alkaline or lithium. So I made a little research and decided to give these batteries a try. I simply love them. The batteries are expensive, but if you hate to dispose alkaline batteries, this is the way to go. Besides in time, they will be cheaper from each use. They last more than any alkaline battery, and a bit less than the lithium. I have bought the

As everyone else has said, the only rechargeable AAs on the market that I could find which give off 1.5v. All of the other rechargeable batteries are around a 1.3v. Now in many situations, products are designed to still function under the reduced voltage so that those rechargeables work. But there are still a number of products that only run on 1.5v, and many of the ones that take a lower voltage do not operate entirely as designed with it. So in-step these guys, who designed something that I cannot believe hasn't obtained competition.Pros:Perceptibly lighter than standard rechargeable.Does indeed offer 1.5v till drained.Seems to last quite a while in devices, haven't actually measured it out. While I can agree that the 3000mWh could be misleading based on assumptions being made, I have to agree that if you read, it clearly states mWh and not mah. mWh is a raw value since these batteries are variable voltage. mWh to mah is just divide the mWh by voltage. So these 3000mWh are 2000mah at 1.5v. If you were to discharge them at the inset ring at 3.7v, it would be ~810mah. What's cool about this is that they charge utilizing the 3.7, and that mah is not just for discharge, but also for charge. So charging at 3.7v like it does actually decreases the time necessary to charge the battery.Cons:I would say disposal, but that's not a con of the product itself, more or less what it's made of.While I'd like to take off a star for pricing, unfortunately there is no competition so I suppose they have the right.Great idea, hope for some competitive pricing in the future.

These work well for high drain applications like ATN X series 2 night sights. These are really the only choice for internal batteries for my ATN. I liked them so much I bought a second set, including the battery charger. For only $3 more, I get a spare charger with the batteries.Output 1.5 volts until they die. Then recharge them. Much better than Sanyo Eneloops, or standard AA alkaline batteries for my scope. Lithium will actually last longer ( almost 2x as long) but then you throw them away. These pay for themselves after a few chargesSo far so good.If I have problems with these, I will come back and update this review.

I have waited 3 months before posting this review because I wanted to put these rechargeable batteries to extended use. I've now recharged them twice. This may seem like very little use but it has really been impressive. I have been using them in an older digital camera and they have far outlasted either single use alkaline batteries or NiMh rechargeables. I've deliberately used the camera's built-in flash (which is always a power hungry option) far more than I normally would to further challenge the battery capacity and they still impress.I can't say just how long it takes to recharge the set of 4 Kentli batteries; I just plug the USB cord into my laptop PC while at work and when I return home the LED indicators have turned from red to green showing the batteries have been fully charged. Weight of the charger with its short (permanently attached) standard USB cord is 168 grams (6 ounces). Charger body dimensions measure 65mm x 93mm x 19mm (2 1/2" x 3 5/8" x 3/4") and the cord length is 124mm (9 5/8"). This is small and light enough to easily carry along inside a camera case, or you might even drop in a jacket pocket where you still would hardly notice its presence.I will definitely recommend the Kentli Lithium AA batteries (with unique required charger) to my brother living 2,000 miles away. He has a digital camera which is even more demanding than mine and had even stopped powering on before he bought a set of 4 single-use Lithium batteries from a camera store. The $44 price which I paid may seem high, but if you have any device which quickly devours high-capacity & high-output AA size batteries, I consider it definitely worth the one-time investment.

I purchased these batteries 8 months ago while searching for AA lithium batteries to use in my Canon EOS DSLR camera, which sucks the life out of batteries. I have a camera grip which accepts 6 AA batteries. Using regular rechargeable batteries I get about 4 hours of use, with these, I get a lot more time. I have used the same batteries for over 24 hours of use, not including storage time. They have lasted up to 4 months in my camera and so far 4 months on the shelf. I don't know the exact shelf life after a full charge because I had to swap them out of my camera. In the 8 months that I have been using them I have only charged one set 3 times and 2 times for the other. Another thing that is great about Li-on batteries is that they weigh less, making the camera lighter or what ever you are holding or carrying. They take about 2.5 hours the recharge using the KENTI CHU4 charger. This is the only charger that can be used with their batteries. Will be purchasing more and another charger, I would definitely recommend. I also use them in my Powershot SX12IS and a few flashlights.