Panasonic K-KJ17MCA4BA Advanced Individual Cell Battery Charger Pack with 4 AA 2100 Cycle Rechargeable Batteries

I am impressed with the Eneloop batteries. After hearing so much positivity about these rechargeable batteries, I decided to give them a go. In short they're the best batteries I have used. I needed an alternative to my Xbox Series X Controller battery pack after my powera recharging station gave out. In the few months I have used, Eneloop lasts longer and I have to charge less frequently even after long hours of gameplay. I estimate I get at least 20-30 hours of gameplay, however your's will vary because I use no vibration settings and dim Xbox light on controller and that conserves a lot of battery. Definitely simple and easy to use, the charger works with the aaa eneloop batteries, I also decided to buy and use for my remotes. The charger is quality and not a cheapo junk. This is the real deal, I have seen someone Get over 10 years use out of these batteries. These won't work on certain devices, these are Nickel-Metal Hydride NOT Lithium. So for certain devices you may have to research if they work, some reviewer said they do not work with Gameboys because of the output, you just have to research and figure out before hand. For my uses they work great, I can highly recommend if you are a Xbox Series X Controller user they are the best rechargeable technique I have used thus far for my Xbox.

Important! After purchase make sure to remove the batteries from the charger then remove the little plastic/paper strip inside the charger which blocks the charging contacts. If you don't remove this it won't charge the batteries. Ran into this with my Dad who couldn't make it charge until he found the little plastic strip inside and removed it. Probably makes a lot of people think their charger is broken. It is not. When it's working there will be little lights that shine through the transparent plastic at the bottom of the charger under each battery (4 lights when 4 batteries are charging). This is an excellent charger. Charges at a decent speed without making the battery hot (heat is bad for batteries), turns off when charging is complete. Charges both AA and AAA. Don't push too hard when seating small AAA batteries, they sit inside the charger fairly lightly, they don't click in very far or very securely it's just the way this charger is with AAA's, just need to be gentle when seating the AAA's.

The batteries worked really well and last a good amount of time before needing to be recharged.

My review is for the Panasonic K-KJ17MCA4BA Advanced Individual Battery Charger + 4 AA Batteries. I purchased this product as a better alternative to the Sony CycleEnergy charger I purchased last Christmas at a B&M store in Germany for €29.99 (about $37 USD). The biggest disadvantage I had with the Sony CycleEnergy charger is that it required me to always charge batteries in pairs, which ended up becoming problematic after noticing that the batteries don't always charge equally. I would charge the batteries until the LED light would notify me that they are ready to use, yet after inserting them into my high-power devices the batteries would already read one to two bars lower instead of indicating all the bars for a full charge. At the time I also only owned two rechargable AAA batteries, one which was used for my wireless laptop mouse and the other for a Bluetooth stereo remote. This also turned out to be a problem since the wireless mouse would drain the battery very quickly whereas the battery in the remote would barely lose its charge, which in turn would force me to charge a near dead battery with an almost full battery. It was at this point that I started looking into a better alternative for charging my rechargable batteries, and after a bit of research I came across the Panasonic BQ-CC17 "Advanced Individual Battery Charger". The reason I chose to go with this specific brand and charger was because it has excellent ratings, the great price, and most importantly allowed for individual cell charging. I cannot express how pleased I am with this product, and I highly recommend this product without any hesitation to anyone in need of an excellent battery charger! The convenience factor alone of not having to charge batteries in pairs makes this product a well worth investment in my opinion. I am also shocked at how affordable this battery charger is compared to the Sony CycleEnergy I purchased, as I only paid ~$20 which included 4 AA batteries that sell for ~$14 if bought without the charger. I practically could have purchased two of these Panasonic chargers for the price that I paid for a single Sony CycleEnergy charger! As far as my experience with the battery indicators on my high power devices, they finally indicate a full charge when inserting the batteries into the device! Which tells me the reason as to why it showed one to two bars less on my previous charger is because the charger was set on a timer and one of the two batteries must not have been getting fully charged during the process. The BQ-CC17 has also bee compatible with all my other NiMH rechargable batteries, which so far include my Sony CycleEnergy AA and AAA, Duracell AAA and AA StayCharged, and Energizer Recharge Plus AA. Another plus for folks such as myself is that this charger works outside the U.S., as the packaging indicates 100-240V 50/60Hz making it world wide compatible as long as you buy a plug converter (can be found as cheap as $1, though I would recommend paying a few extra bucks for a better quality and safer product). The only con I found with this product initially was in regards to the LED lights, not that there is any performance issue with the lights themselves, it was just impossible to even know they existed until you plug the charger in and charge a battery. When the item first arrived I was under the impression that I had received the wrong charger as I couldn't see any LED lights on the charger nor did I find any mention of them on the packaging. I had to go back to the product page on Amazon to ensure that I had purchased the right product and properly read the description to include LED indicators. It wasn't until I used the charger for the first time that I was able to spot the LED indicators, as they are hidden behind the white plastic case and near impossible to see without charging a battery. Overall I think it actually makes the charger look more aesthetically pleasing with the LED lights hidden behind the case, I just found that initially it created some confusion since some of the pictures on the product page show the little green lights which makes it seem like the lights are featured externally on the charger. Perhaps it was just me, but I figured I'd mention this just in case anyone else is a bit confused when they can't find the LED indicators as the thought of them being hidden behind the casing never even crossed my mind. Another thing I want to mention in regards to these Chargers is that it appears the only difference between the BQ-CC17 and BQ-CC17 "Pro" is the color. According to the product information from each charger, everything else appears to be exactly the same. So unless you prefer a black charger over a white one I recommend that you don't get hung up on the extra wording of "Pro" and instead purchase the BQ-CC17 charger that comes with the 4 AA batteries as that's the best bargain. My purchase was shipped by and sold from Amazon.com, which arrived in the retail packaging displayed in the picture of the product page and was fairly easy to open. The 4 AA batteries including in this pack came pre-charged and were ready to be used upon arrival. In my opinion this charger is the best in it's price class, I'll even go as far as saying better than all of the more expensive models I've bought in the past. Short Summary: -Charges batteries individually which results in proper battery charge, unlike those chargers set on timers or requires charging in pairs. -Great price, especially if you purchase the model that comes with 4 pre-charged AA batteries. -Works worldwide (100-240V 50/60Hz) with additional purchase of plug adapter/converter -LED lights are hidden underneath white casing, will only turn on when battery is being charged In conclusion, this is the best rechargable battery charger I have ever used, I cannot recommend this product enough!

As always Eneloops are the best. This charger makes them even better, an inexpensive way to recharge your batteries, plus you get 4 AA batteries with this charger. The only thing this charger really needs is a better instruction manual. I wanted to test this charger out and i have found that some batteries won't charge in this charger. I threw in a NiMH battery that needed to be topped off but refused to do so. After talking to a few people that know about this charger the reason the charger would blink on an otherwise good NiMH battery it seems the battery wasn't as good as expected. The reason, high resistance when the battery has reached it's potential and would not work in high drain devices anymore. Those batteries would work fine in low drain devices but the only way to charge them is in a charger from Duracell, Energizer or some off name brand that would charge batteries no matter what. Many smart chargers will charge them too. The main reason would be that this charger is designed so a person wouldn't accidently throw in some alkaline batteries and create a mess, or a fire. So usually when you put some batteries in this charger and they constantly blink and won't charge, chances are you might just want to recycle the batteries. They certainly wouldn't work as good in your flashlight or camera but they might work just fine in your tv remote so the only way to keep the batteries and use them for your remote is to either find a basic NiMH charger laying around (or see if someone has one, i keep all mine) or to invest in a smart charger/analyzer and you can see how bad your batteries are by checking the voltage and how much mAh you can pull out of the battery on a discharge. The instruction manual doesn't say what causes the blinking but this review should give you some kind of indication if you decide to try to charge all your older NiMH cells. I have not tried to charge Duracell or Energizer cells in this charger, new ones anyway. The simple blinking light though can give you an indication right away if you got a problem with your NiMH battery and you can set those batteries aside and consider getting a new pack of Eneloops. Overall this is a great charger and a good starting point for those who haven't yet made the jump from alkaline batteries to rechargeables. If you are still not sure if rechargeables is for you, consider this, 10 cycles is pretty much all you need to cover the cost of buying a pack of Eneloops. Rechargeables won't work in every device and sometimes it takes a few cycles before the batteries reach full strength (fully discharging the battery and then recharging to full). Consider this as well, alkaline battery voltage sags or drops from 1.6 volts down to 1.5 volts then it continues to drop while NiMH (or Nickel Metal Hydride) maintain it's voltage from 1.4 to 1.2 volts and maintain that until the capacity is nearly empty. Often times if your device doesn't work correctly with rechargeables chances are that there's still plenty of capacity left in your alkalines. It's just that the device cuts out at a certain point (usually 1.2 volts) which is why rechargeables are not always ideal. I however found this to be pretty rare but it does happen. Some devices might do this to avoid discharging the batteries to the point where they would start leaking, others it's a voltage requirement. Sometimes you can just wire in an extra battery and use rechargeables there. It would be simple to do for RC cars, some of them have a place to stick the pack in or under if the clearance allows for that. Or the car could be disassembled and stick the extra battery somewhere for easy access. Most if all flashlights will work with Eneloops and in most cases is more ideal than using alkalines. If you need a flashlight for an emergency and the flashlight is dead (or the batteries leak in the flashlight) you might be left without a flashlight. Of course with Eneloops you have to check the voltage every 7-10 months anyway and i have found the best way to keep charged Eneloops in the car or the garage is to cycle them through. If you got extras and you deplete a set, grab the set from the car and the garage and flip them around. I actually prefer to just carry a small 2 AA Mag around with me wherever i go so i don't really need to keep a light in my car for emergencies. I do have an automotive light that uses 3AA's (it's so if it gets all greasy i won't care much) but it comes with a battery chamber so i can leave the light in the car and take the chamber with me to keep fresh batteries in. In a pinch though, i might need that stuff ready to go in the car for whatever reason so it might be a good idea to get a charger for the car that will charge Eneloops. I also got a solar powered charger, which only works with 4 batteries, the only drawback of the device. In all though, i recommend if you are still relying on alkalines to try this battery pack out. Use them in your frequent drained devices, if they don't work in the first device you try, try them in another device. To check the voltage, a multimeter will do that job.

Very good batteries, they keep charge for months on end without being used which is shocking to come back to using them and they still are nearly full 6 months later

I have only good things to say about Eneloop AA batteries and their individual cell charger. I've used Panasonic rechargeable batteries since Panasonic first released them for purchase in the US. A colleague of mine from Australia had the same batteries there. He had tested multiple brands and none were as reliable for either of us as Panasonic rechargeable AAs. Eneloop is no different. The only thing I would change is the AAAs (which this charger also charges): I wish they were stronger than 800mAh and could last longer. However, after charging, both AAs and AAAs stay charged for a long time in case of an emergency. I have not had one leak yet, something I cannot say about Duracells, which have ruined more flashlights, radios, and other appliances than I can recall.

Awesome! Can’t speak for how good these are just yet, but I’ve heard plenty of good things about them. Work just fine so far. This batch was produced in a Japanese factory as noted on the batteries, which I’ve heard is where the best Ni-MH batteries are produced. They came precharged. I appreciate that the charger can charge both Eneloop AA and AAA batteries, so I won’t have to buy a second charger after purchasing AAA batteries. I ordered a “used like new” listing from Amazon resale, and it came in the original sealed packaging. Cardboard was half chewed up, but it saved me three bucks. Came in a thick Amazon paper mailer with no protective wrapping.

I have not used the charger as yet (have been charging the batteries using another charger) but the batteries work well and are brilliant as usual, as expected from Eneloop batteries and Panasonic. These AA batteries like the AAA batteries maintain their charge better than others whether actively used or not. They have a great shelf life and maintain 70 % of their charge capacity even after 5-10 years(not sure whether its 5 or 10 as I have not stored or even used them that long) when stored without use as suggested by the manufacturer. Many experts and regular users also have tested and verified the claim to be true even if I personally did not get that chance. The pack of 4 with the charger is pretty expensive, but then again it should be more than worth it if the charger functions well (and charges the batteries safely and fast) and if the each battery actually lasts 2100 cycles each, I of course have not reached anywhere near so many use cycles just yet so cannot verify the veracity of the claim personally but the reputation with people speaks for itself. The batteries come per-charged (using solar energy) and can be used straight out of the box (not sure if the charge lasts the full cycle though on first use) Currently they are working perfectly fine, so overall a good buy.

I’m using this charger for about 2 weeks and charges a couple batteries with it and I’m really happy with the purchase. It comes with AA Eneloop batteries (4 of them), which are made in Japan and can be recharged over 2,000 times without losing performance! The charger itself is robust and well-made. I’ve used it to charge not only the included Eneloop AA batteries but also other rechargeable AA and AAA batteries. It’s flexible, allowing you to charge one battery at a time or up to four at once, which is super convenient. Plus, it plugs directly into a wall outlet, making it easy to set up and use. Since it’s Panasonic, I feel confident in the safety and reliability—no worries about overheating or electrical issues. The brand is trusted, and the quality shows in both the charger and the batteries. All in all, this is a fantastic, reliable product that’s definitely worth the investment.

Excelente!

First time it may not last long but eventually it will. So wait for couple of days

Cumple bien con su carga, tanto sus baterías originales y con otras. Las baterías tienen un buen rendimiento.