I've been using the all red version of this Lithium AA from EBL for about 2 years and had very good luck with them. We use these in ZWAVE door locks which chew through batteries pretty quickly so these get plenty of charge cycles.One issue I had was that my wife and kids could not get their heads around the fact that there was a special charger for the red batteries. While my wife is a full blown firemarshall Bill, afraid anything and everything is going to catch on fire at any moment, she still continuously would put the wrong batteries in the wrong chargers.This new EBL battery and charger kit solves that issue as the charger is also compatible with Ni-MH. Well done EBL!And the price when I purchased was on sale for $20 for the 8 batteries and the charger, what an amazing value! I am used to paying more like $40 just for the 8 batteries.As for performance, I have a continuous load, battery performance tester. I tested several of these batteries at 300mA and they all met or exceeded 3000mwh capacity.I bought 4 kits and highly recommend this product.

Excellent

batteries take a charge quickly in the accompanying charger. Once charged, they hold the charge well in storage. The 3000 mAh batteries are more powerful than most rechargeable batteries, which is one of the main reasons I bought them. I was very happy to see how quickly they took a full charge

Advertised for 1.5 V constant power delivery? nope. Others mentioned its good for battery powered cameras that normally uses 1.5 V lithium batteries? nope. I used it in a google nest fire alarm and fully charged batteries die in less than 24 hours. Complete trash. Amazon partners with trash companies to sell people trash and its becoming like Temu. I am not even going to bother with a return since spending my time returning it cost more than my time is worth.

Seem good so far, no complaints. Only had them for about a week though.

tldr: if you have higher power items, this will be a game-changer! But for normal low-power items, I wouldn't go out of the way to upgrade.Cons: None? And I am a pretty harsh reviewer. They are batteries, they all worked, and everything is 'as advertised' which is annoyingly difficult to find these days. They are a little more expensive than NiCads, but better in just about every other way to the choice for a new purchase leans in the lithium's favor. Worth upgrading functional NiCad batteries across the board? Price probably needs to come down a bit more to make that purchase justified.Pros:-Slightly higher overall capacity, and faster charging than my NiCad batteries-The weight is less than NiCad and traditional alkaline, which is almost always a plus, especially for hand-held devices.-I have a couple devices where the extra size dimensions of NiCad batteries make for a tight fit, but these are only slightly larger than standard alkaline batteries which means they will make a far better replacement.-But the biggest plus is the extra voltage! Between the kids and I, we have a bunch of game controllers, and they just don't last long on NiCad batteries (powering off randomly, vibrator randomly stopping, etc.). The VR controllers straight-up don't work fully with NiCad batteries and operate in low-accuracy mode, but they drink through alkaline batteries so fast that it wasn't worth buying boxes of batteries and we just put up with it. Just in the couple hours we have had them, it is high praise all around from me and the kids. It just makes everything work they way they are supposed to, and the fact that they last longer and recharge faster are just bonuses! Not sure you would get any benefit putting them in normal low-power devices... a bit too soon to tell how the self-discharge stacks up against NiCad batteries, which is the main power loss factor for sensors and things, but my bet is that the nicad batteries will just keep on getting used in those until they eventually go bad.Lastly, the charger! It actually disserves more praise than the batteries themselves. I do wish it came with a charger block... but nothing does these days. It does seem to work with the USB on my power strip though (0.5A), so it doesn't need much to work.Something that kept me from buying lithium batteries in the past was that they often came with chargers that only worked with lithium batteries. With kids in the house, it was a losing proposition to have 2 kinds of batteries, only to have the wrong ones in the wrong charger and breaking things. This charger will do either NiCad or Lithium, and each slot charges independently, so no more trying to pair batteries together and hoping they are at similar charges for optimal health. I also have a known-bad NiCad battery, and the charger properly detected that it was bad (something my NiCad charger didn't do). So it can charge 8 batteries, and you can mix-and-match AA, AAA, NiCad, and Lithium, and charge without worry, and it properly tells you when a battery is shot. That is a win all the way around!Again, probably not worth throwing out all of your old NiCad batteries and fully upgrading. But getting a few for high power devices, and slowly replacing NiCads over time seems like an obvious move at this point.

These are genuinely 1.5v batteries that recharge quickly. I have used them in my smart door locks without any issues. Unlike many rechargeable batteries, my locks open and close with full force as they would with quality non-rechargable batteries. The batteries last a long time on a single charge. I have not had to put them through too many cycles yet but after several cycles they seem to continue to work great.

*2-21-25 Update*The batteries have been great. I had one camera die after 30 days with lots of captures and constant below freezing temperatures. I'll be replacing them every 3-4 weeks now on a schedule. They work great!I've been using these for a while now and they are AWESOME compared to the 1.25volt NiMH EBL batteries in my trail cameras. With the NiMH ones it was tough to get them to last a full 7 days especially in the cold weather. Well imagine my shock when I returned to find that the batteries were still showing full bars after 230 captures of video/pictures in sub 32 degree weather all week. Amazing.Regarding the chargers, they are MUCH faster than the older EBL chargers I have for the NiMH batteries. The best part is that the chargers can be used with the old NiMH batteries as well.These works fantastic and I just purchased a full suite of them to replace my existing NiMH batteries. I'll update this review after testing in the winter further but they get the seal of approval already for me!