12-Pack Rechargeable Lithium aa Batteries with Charger, 1.5V Constant Output, 3400mWh High Capacity, 12-Slot Double A Li-ion Charger with Smart Charging, Multiple Charging Protections

I am very satisfied with this pack of RayHom rechargeable AA batteries. I use them for controllers, toys, and cameras, and the battery life is excellent. They charge quite quickly, and the 8-slot charger is very convenient because I can charge everything at the same time. The quality feels very good, and they maintain a constant power output—unlike others that drain quickly. Furthermore, the carrying case is compact and looks sturdy. I use them for controllers, toys, and cameras, and the battery life is excellent. They charge quite quickly, and the 8-slot charger is very convenient because I can charge all of them simultaneously; plus, I can take them with me wherever I go. The quality feels very good, and they maintain a constant power output—unlike others that drain quickly. Furthermore, the carrying case is compact and looks sturdy.

If you’re like me and have a drawer full of different rechargeable batteries for everything from TV remotes to high-end cameras, you know the struggle of having five different chargers plugged in at once. This RayHom Smart Charger has been a total life-saver for my organization. Why this charger beats the cheap ones: Individual Charging Slots: This is the most important feature. You don’t have to charge batteries in pairs. If you only have one dead battery, you can pop it in any slot and it works. You can even mix and match AA and AAA sizes at the same time. Smart LED Indicators: The display is crystal clear. It shows exactly which batteries are still charging (Red) and which are ready to go (Green/Blue depending on your model). It even flashes if you accidentally put in a "bad" battery or a non-rechargeable one, which is a great safety feature. USB-C Input: I love that it uses a modern USB-C port. I can plug it into my phone brick, my laptop, or even a power bank while traveling. It’s much more convenient than the bulky wall-plug style chargers that block other outlets. Safety First: It doesn't get hot. It has built-in protection against overcharging and overheating, so I feel comfortable leaving it on the counter to finish its cycle overnight. A Pro Tip for Users: This charger is optimized for Ni-MH and Ni-CD batteries (and some versions support 1.5V Lithium—check your specific box!). If you’re using it for the RayHom Lithium batteries, they charge incredibly fast, usually in under 2-3 hours. The Verdict: It’s compact, intelligent, and handles a heavy workload without a hitch. It has turned my "battery chaos" into a streamlined system. If you want to extend the life of your rechargeable batteries, you need a smart charger like this that won't "cook" them with too much current.

I recently received this rechargeable AA battery kit and it’s a very convenient setup. The package includes eight 3400mWh lithium AA batteries along with an 8-slot charger, which makes it easy to charge multiple batteries at once. I like that each slot works independently, so you can charge just one battery or several without any issue. The charger uses a USB-C connection, which is very practical since it can be powered from many common adapters or USB ports. The LED indicators are clear and helpful: red shows when the batteries are charging and green lets you know when they are fully charged. Another nice feature is the magnetic cover, which keeps the batteries organized and protected from dust when not in use. The charger itself feels compact and well designed for storing batteries neatly. Overall, this set is a practical solution for devices that use AA batteries such as flashlights, game controllers, or other electronics. The combination of high-capacity batteries, independent charging slots, and simple LED status indicators makes it easy to use and convenient for everyday use.

My main use for these batteries is for the Blink Outdoor 4 cameras, so need the batteries to have longevity and especially to get thru the winter when changing batteries in cold weather and snow can be more challenging and problematic. I wanted lithium batteries due to their consistent power output in cold weather, which alkaline and Ni-Nh decline significantly during the cold. I chose these batteries for the above reasons and also because of the high 3500 mWh (total energy a battery can store and deliver) so they'd last thru the winter without having to be swapped out. First, some terminology for consistency: • mWh stands for milliwatt-hours and represents the total energy a battery can store and deliver. • mAh stands for milliampere-hour and represents the battery's capacity, indicating how much electrical charge a battery can hold. These are packaged nicely with a well built charging box. However, they don't charge anywhere close to the 3500 mWh advertised on Amazon; closer to 1000 mWh less, which is a huge difference (see screenshots below). I used a XTAR VX4 Battery Capacity Tester and Charger, which you can get on Amazon. Lithium batteries discharge at a consistent 1.5V from beginning to end, even when the charge is very diminished near the end of its charge, so a regular battery tester doesn't work as it would show a battery as being consistently and fully charged until there was about 0% charge left (eg. a 20% charged battery would show as 100% fully charged). This tester determines the mAh and the mWh by first fully charging the battery(s), then fully discharging them (the battery levels are determined here), then fully charging them again so you can use them (C-D-C). The mAh is not provided on Amazon's website, so I calculated it using the standard formula of mAh = mWh divided by the battery volts. So, 2266 (mAh) = 3400 (mWh on website) / 1.5 (battery's volts). Upon testing of all 12 batteries shipped, the mAh averaged about 1699 vs. the 2266 it was supposed to be, so a lot less. The mWh averaged 2552 vs. the 3500 it was supposed to be, again far lower than advertised. I included screenshots of all test results below (mAh and mWh are in separate screenshots). When I first saw the test results, I thought it was just a few of them perhaps defective, but all 12 tested in the same range, so that doesn't look like a defect but more like false advertising. The Energizer Ultimate Lithium AA Batteries (non-rechargeable) has an advertised mAh of 3500, which equates to a mWh of 5250 (mWh = mAh x 1.5 volts), far superior to these rechargeable. The cost savings of using rechargeables may be good, but battery performance is more important to me, so the Energizer one-time use are the way to go. Obviously, I've returned these. I've reviewed several other rechargeable Li-Ion batteries below, none that charge close to their advertised capacities: My XTAR Lithium (Li-Ion) AA Battery Review: https://www.amazon.com/gp/customer-reviews/RSUM0LDFT2FPX My SincehHoly Lithium (Li-Ion) AA Battery Review: https://www.amazon.com/gp/customer-reviews/R390K7RXXBV8VN My Delgeo Lithium (Li-Ion) AA Battery Review: https://www.amazon.com/gp/customer-reviews/R2OPXD8DHSCY37 My XTAR VX4 Charger & Battery Capacity Tester Review: https://www.amazon.com/gp/customer-reviews/RXTAHAOCCR0F5

Charger case is very easy to store. A little disappointed in longevity of charge about 2-3 weeks, then they have to be charged again. Might try better quality battery. But overall am pleased with purchase

These battery it works really well. I charged them and they hold the charge

this is great to save money. i don’t have to buy battery often now. the battery last for a long time.

These rechargeable batteries are very convenient. The battery last a long time and I’m definitely saving money now that I don’t have to keep buying disposable batteries. Happy with this purchase.

Using for my outdoor security camera and is working well. Holds a charge great. I have them combined with a solar panel.

ok

Used in my outdoor lighted Christmas Wreaths each uses 3. On for 7 1/2 hours after which they grow very dim and the batteries need to be recharged. Don't know how many times they can be recharged before they will no longer take a charge. Just have to wait and see

The batteries charge only to 30% after only approximately 20 times recharging. I have 2 other brands and they are still charging to 100% after 60 times recharging. The batteries definitely are low quality batteries. I missed the return period and wasted money.

Very bad