Rechargeable aa Batteries Lithium 8 Pack with Fast Charger,1.5V 3000mWh High Capacity aa Lithium Batteries,Constant Output Li-ion Double a Batteries Cycle Times up to 1600x (Charger+8Pack)

I purchased these to use in a powerful LED flashlight that uses four AA batteries. The flashlight diameter is the size of a D-size flashlight, but it uses an internal carrier that you load with AA batteries.The flashlight is labeled 1000 lumens. We use it sparingly around the house; sometimes checking out the backyard, going up into the attic, randomly when we lose power. It's very rare that we use it for long extended periods.However, nearly every time I use the flashlight it signals, by blinking, that that battery power is low. Even though, I may have recently replaced the batteries with new Alkaline type AA batteries. Luckily, I can continue to use the flashlight even though it blinks from time to time.These batteries and the Alkaline I've used have the same Voltage 1.5V. These rechargeable batteries are rated at 1.5V 3000 mWh. For the Duracell the packaging doesn't specify mWh or mAh. The best I can find online is 1500 mAh.When I convert 1500mAh to mWh I get 2250 mWh. So, the rechargeable batteries have a little more stored power than my Alkaline.For me, these rechargeable batteries are able to create a light as bright as the standard Alkaline batteries. But over the course of a few months of typical use, I don't get the blinking low power notification.This seems consistent with the claims on the website that these batteries were designed to supply a constant power until the power is depleted. This may explain why the flashlight doesn't blink. There was more power to begin with and the remaining power is available at the full 1.5V.These batteries work as described on the website. I'm happy with them in my demanding flashlight. They seem to last longer and provide a more consistent illumination. And when the battery does reach bottom, I'm able to recharge it in a matter of hours to full power. So, admittedly while it's not a lot on a yearly basis they do save me money. And I don't have to worry about running out of AA batteries. I would recommend these batteries.

These rechargeable AA lithium batteries are powerful and reliable! The fast charger works great, and the constant 1.5V output keeps my devices running smoothly. I love that they can be recharged up to 1600 times—great value for a 24-pack! These are a must have!! Saves me money on buying batteries.

I absolutely love this thing. The batteries last forever and charge up super fast. I bought these primarily for my xbox controller that just eats through batteries like no other. I figured for the price there would just be a cheap rechargeable but I was completely wrong. These are great quality and worth every penny. Came with a C charger (can't have enough of those). Great investment

Pretty nice setup they have going here. Using them in the Blink camera systems between my business and home. Not real sure on longevity but with being rechargeable I will save in the long run.Only issue I've had is one batteries positive end broke off when inserting it.If more have issues I'll update the review.

These are definitely a game changer! We absolutely love having these around to switch out batteries around the house, makes it much easier!

Great batteries with an insane life cycle between charges, the case is super convenient and charges quite quickly!

Muy buena calidad dura mucho las baterías

I recently purchased the BATZONE Rechargeable AA Batteries 8-Pack with Fast Charger and have been thoroughly impressed with their performance. Each battery boasts a high capacity of 3000mWh at 1.5V, ensuring a consistent and reliable power supply for my devices.The charger features eight independent charging slots and utilizes a magnetic design, allowing for seamless integration of battery charging and storage. This thoughtful design not only makes charging more efficient but also simplifies storage and portability. The charger's ability to support 1-8 AA lithium batteries in any combination is a testament to its versatility.After multiple charging cycles, these batteries have maintained their capacity and performance, making them a cost-effective and environmentally friendly alternative to disposable batteries. The build quality is robust, and the batteries fit perfectly into all my AA-compatible devices.Overall, the BATZONE Rechargeable AA Batteries and Fast Charger have exceeded my expectations in terms of performance, convenience, and value. I highly recommend this product to anyone seeking a reliable and innovative battery solution.