Rechargeable AA 1.5V Lithium Batteries 8-Pack, Full-Recharged Long-Lasting 3500mWh High-Capacity 2300+mAh Dual A with Fast Charger Combo for High-Tech Devices, Blink Cameras, Cycle Times 1300x

Trying select a rechargeable battery can be confusing. In my situation, I use the 8 rechargeable batteries in a Garmin GPSMAP 79 and an West Marine VHF radio. The requirement is that I need them to be chargeable from a portable solar panel and a portable charger. Having tried a different manufacturers lithium ion 1.5 v rechargeable batteries, it couldn't be charged with either of those devices. I was able to charge from both devices using these batteries with their charger. All eight batteries were able to fully charge. I can't say the same thing about the other manufacturers batteries I was trying.The reason for lithium ion over NiMH batteries is that you can get them with 1.5Vdc output whereas the NiMH are rated at 1.2Vdc output. In other words, you has less minimum voltage head room. Some electronic devices don't work reliable when the voltage dips under 1Vdc. Problem is that you only find out whether that's a problem through trial and error. My Gramin GPSMAP device is suppose to work with NiMH batteries, but when I tried some, the device would not power up. I can't tell if the problem is caused by Garmin electronics not really working with NiMH batteries or the batteries were faulty. The NiMM batteries both reported being fully charged and outputting 1.2 Vdc. The lesson I'm sharing is that picking out rechargeable batteries at this time seems to be a hit or miss endeavor seeing the number of complaints about DOA batteries. These batteries got a 3 or lower rating 19% of the time! so I guess that means the 81% of the time people found these batteries favorable. That's probably pretty good. The only real drawback to lithium ion batteries is that they can more easily combust making them a safety concern. NiMH batteries do not have this same inherent risk.So far in my testing process, these batteries have been meeting my needs. I like the small light weight charger it comes with. The round green light lets you know that the charger is getting power, Then there is a red or green led light above each battery. Red means that the battery is being charged and Green means that the battery is fully charged. The positive tip end of the battery contains a blue led light. (Yep, in the battery itself) If you look closely at the positive tip you'll still 4 small holes the that led blue light shines through. When placed them in the charger, it fairly easy to see the blue LED light. The blue LED light on means that the battery says it's charging. The blue LED light turns off when the batteries are fully charged. It turns out that the entire charger shuts off once it's fully charge. If you're fully charged you need to unplug and plug the charger if you want to see the green LED lights. When you first begin, you'll see the red light on and in a short time each batteries blue LED light will flicker. Eventually it will turn off and you'll see the green led light. And once all batteries have been charged the charger will just shutdown. It's seems to be one of the more intuitive charger designs on letting you know the status of the charging system. None of the chargers on the market seem to let you know the capacity percentage.I was somewhat influenced by a review paper on top rechargeable batteries manufacturers. That review rated CZVV as the top pick. We know that's all marketing, but I liked the evaluation methodology they used. CZVV's web site shows the battery composition; it looks simple and cleanly package. I also like the plastic battery cases it comes with. I still need a set of backup batteries along on my adventures.Please note that CZVV wants you to only use their charger with their batteries. Obviously you can't charge NiMH batteries with a Lithium Ion charger and vise-a-versa, but their recommendation is to also only use their batteries and their charging system. At first that may seem like folklore, but I got a strange feeling that pair batteries and charging systems, especially for lithium ion batteries at this time, is what you should aways be doing. Remember that the CZVV battery contains electronics that the CZVV charger may negotiate with (i.e.: fast charging or power sharing) . That's at least a rationale argument for why the battery and charging system need to be paired. I think it's a good thing that CZVV tells you not to mix manufacturer. I think that's absolutely true on the standard sized the lion ion batteries.The batteries are rated at 3500mWh. I have no idea on what I actually get. It seems that most battery manufacturers seem not to actually produce there specification claim; but the truth is that the actual rating doesn't matter. All that matters to the user if the batteries last for a time enough to power their device till the batteries need to be recharged and that's actually a function on how much power your device uses and how inconvenient is it to change batteries. You won't know the answer until you actually try the batteries on the device your using. It seems you can't reliable trust mWh ratings when comparing batteries. It's best to think of that rating as a capacity category. 3500mWh means the manufacturer's high capacity AA type battery.As I've stated, so far I'm very impressed with these batteries. I'm only at the beginning state of evaluating these batteries. The next question of concern is: do they reliably recharge?. I'll be checking that out over the next 3 months, and will report on those findings. In other words how well they worked in the field!! At this time I feel pretty hopeful that they'll past my trial period.

Works well for blink cameras. They’ve survived a couple of Phoenix summers, which is impressive. They definitely don’t last as long as non-rechargeable batteries, so if changing the batteries more often is a deal breaker, stick with the single use lithium batteries.

Some dont seem to hold much charge. The ones that do hold charge work very well.

Not the cheapest to put in my blink cameras, but worked well and charger works well

After 2 years of very minor use, one of the batteries in this set has completely stopped working. It will not charge, and it registers only a very very minor amount of voltage when put on a sensitive voltmeter.The CZVV description says there is a 3 year warranty, but they have not responded to any attempts at contacting them. I would try a different brand.

I've gotten this set twice now. They work great for my outdoor cameras and seem to last longer than my normal (non lithium) rechargeable Energizer batteries.

I love these! I was not sure about the price but 4 NON-rechargeable Energizer batteries even on Prime is like $15. You literally make your money back on these. I got the AA (qty 8) with (4 cell) charger that runs on USB-C.TO MY JOY! The positive node of the AA batteries has a built in bright blue LED in the tiny tip! That lights up when you charge them! I love lights, colors, and shiny things so go figure.Also they last forever- AND ARE STRONG! (Compare to regular or even non-rechargeable lithium batteries in a FLASHLIGHT). Included photo shows stats and a single example battery from the order.Nothing bad to say at all. Happy I got these. GREAT FOR PHOTOGRAPHY AND/or SURVEILLANCE CAMERAS that run on your WiFi, the battery powered wireless cams BURN batteries like they were dead when you put them in (lol) - these outlast again even the regular lithium Energizers.THESE PAY FOR THEMSELVES. There's no other way to look at it. If you need AA batteries in things like lights, or devices that just sit and use battery or just an item you use a lot- these automatically and beyond a doubt mathematical pay for you to own them.Fit is perfect as well, no deformity.

These have worked perfectly for our needs. Easy to recharge, doesn't take too long to charge.