imuto Rechargeable AAA Batteries Lithium 8 Pack with Fast Charger 1300mWh 1 5V Output Triple a Lithium Batteries

Have several flash lights that use 3 and 4 AAA batteries. Wanted longer battery life than from alkaline batteries. Bought Imuto kit with 8 batteries & charger. After charging, installed batteries in 2 flashlights that each use 4 batteries. I was impressed with noticeable brighter light coming from flashlights with LED bulbs. So impressed that 8 more CEFC lithium ion batteries, same as ones that came with the charger, were ordered for more flashlights. Hoping for longer battery life from reduced possibility of battery chemical leakage that occurs with alkaline batteries. Pictures show charger connected to my supplied charging supply with USB-C connector to mate with the Imuto charger. One picture shows charger top open, filled with batteries. Another shows lid with 8 green LED status lights. Lights flash during charging and become steady when batteries fully charged. Another picture shows front of the charger with lid closed. So far, really love the batteries & charger. Read more

Great product, very nicely packaged and batteries were charged and work great. Would recommend. Read more

Lithium batteries are much better than NiMH batteries because they're 1.5v vs 1.2v. You just have to use their special charger so charging is consistent versus any charger. I'm certainly using these in place of alkaline batteries where devices need higher voltage and drain faster. It'll save me money in the long run. I have a set used in my door locks. They last just as long as alkalines. With my specific door lock, it doesn't seem to work with NiMH at all and drains alkalines every few months, so these lithium batteries keep the cost of operation down a lot. Just a note: one of the 8 batteries came defective and doesn't hold a charge. I sent a video in and they addressed my concern and replaced it. So far, they stood by their product as well as the big names, if not better, so my replacements will be of their brand. Read more

Very good quality battery charger and batteries holding charge well. One battery is defective. I will contact supplier for replacement. Read more

Work great I use them for my mini z rc decent battery life and recharge rate all in all great for the price Read more

I'm very pleased with the quality and ease of use of this charger. It can charge up to 8 AAA lithium ion batteries at the same time and it's easy to see which batteries are done charging and which ones are still in the process. Read more

This is not a Vine review: I bought the set of 8 imuto AAA batteries with the charger for $22 in Mar 2025. - charge the batteries when you receive them: mine arrived at about 40% charge. No big deal - just charge them when you get them. - the batteries can be charged in my XTAR VX4 and EBL C708S3L chargers in addition to the one in the kit. - the charger included with these batteries will **not** charge NiCD, NiMH, or my other rechargeable 1.5V Li-Ion cells - it's for these imuto cells only. I have several chargers that will charge 1.5V rechargeable Li-Ion cells (including these), so the included charger isn't much interest to me. That said, The charger's physical design is appealing but it has some aspects I don't like: - as mentioned above, the charger only works for these specific batteries (though the batteries can be charged in other chargers) - this charger only works for AAA batteries. Consider whether the imuto kit that has 4 AA and 4 AAA cells might make more sense - for some reason they put the USB-C power input on the lid so it ends up being a clunky thing that kinda gets in the way. It's not a deal killer, but I don't understand why they didn't put the input power jack near the bottom Now the good news - these AAA cells have a true capacity around 720 to 800 mAh (equivalent to 1080 to 1200 mWh). It seems that the capacity improves a bit (10-20 mAh) after a few charging cycles. Now you might think since imuto claims these cells have an 865 mAh/1300 mWh capacity that this means you are only getting 85% of the claimed capacity - and you'd be right. However in my limited experience, getting 720+ mAh from a rechargable AAA cell is pretty good. At the price these were when I bought, the cost per cell is $2.75 which is very good - and that's considering the charger as free. Other 1.5V rechargeable Li-Ion AAA cells I have from a better-known brand that claimed 800 mAh/1200 mWh capacity tested to only about 320-350 mAh capacity at a higher cost. Less than 50% of the capacity of the imutos for 20% more money. I think these cells are a good deal even if the true capacity is only 720+ mAh. I wish imuto - and all brands - were more accurate with their claims. Note that the listing has this buried in some small print (I think this applies to many 1.5V lithiums): "Please Note: The maximum discharge current of imuto 1.5V AAA lithium battery is 0.5A. Due to differences in circuit design, some high-power LED flashlights and LED headlights may cause the battery to work overload and cause abnormal heating. If your device has a high brightness/strong light mode, please pay attention to the high current requirements of the device. Long-term full current output and over-current output will cause abnormal battery heating." The bottom line from me is: this kit is a good value for the batteries alone especially when there's a deal active. But avoid using the batteries in high drain devices. Just an FYI - I bought a 2nd kit at the sale price. **Another update** (Apr 2025): I stumbled on a chart imuto has on another of their rechargeable battery listings (www.amazon.com/dp/B0DCHTZBT8) and I'm adding it to this review. The chart indicates that while the "cell energy" is 1300 mWh (which is what is advertised in the product listing), the "rated energy" is 1170 mWh and the "rated capacity" is 780 mAh. The "cell energy" is said to be the "actual total energy" (theoretical I guess) while the "rated" numbers are the "actual" energy or capacity of the cell. In the chart, imuto defines these values as: - Cell Energy: Actual total energy of the battery cell - Rated capacity: Actual discharge capacity - Rated Energy: The effective energy actually deliverable by a battery (typically 5%-15% energy retention is required in rechargeable batteries to ensure system safety and cycle life) Note that the "Rated" numbers stated by imuto in that chart match up with the numbers that came out of my testing. So you can believe those two columns of the chart. It seems that advertising the theoretical energy of a cell is very common in the battery universe, leaving it to consumers to figure out how much juice **you** will be able to get out of the cell. I wish the "rated" numbers were what all vendors would publish/advertise. I think that chart probably gives people the kind of capacity you can really expect from many other vendor's batteries, not just imuto, when they advertise a particular mWh number. I appreciate imuto providing this chart, though it took luck for me to stumble on it. Read more

These batteries have a hefty punch to them. The only "issue" is that you need to be aware that lithium batteries drop off quickly at the end. Your device might be working perfectly...then it doesn't. Voltage monitoring cannot be relied on because the cutoff happens quickly. Read more