Tenergy AA Rechargeable Batteries 2000mAh Pre-Charged Low Self Discharge for Remote Controllers, Toys, Flashlight, Mouses, 4 Count

I've consistently been able to find these for ~$1/cell for AAAs and AAs for a smidge over $1.50 if bought in a 24 count. You can combine shipping somewhat on these items (like 6 cards of AA and AAA respectively), the savings add up. I've bought 84 AA cells and 48 AAA cells over this year in addition to the 24 AA and 8 AA Enerloops I got at the beginning of the year. Everytime I look, the Enerloops seem to cost more. The white label Amazon Basics seem like a good compromise, and they have sales now and then but it's never running when I'm buying. Of all my Tenergys, most are ~ 6 months old. Having 3 little kids with a LOT of battery-powered toys, most of the batteries have all seen a few dozen cycles now. I recently used my La Crosse charger to do a recovery on my oldest cells and found that, on initial discharge, the AAs still over 1850 mah per cell at a minimum (most still were around 2000) and of the weaker cells, they all recovered to >1950 mah. The only thing I can say negative about the cells are that their positive posts are rather short. While this doesn't affect their ability to be used 9 out of 10 times, it has caused me to hold the enerloops back for the odd item here and there that the tenergys cannot be used for. I recently had to buy another batch of both 24 AA and AAA cells due to breaking out off of the Christmas stuff and having 'battery anxiety', having pretty much no cells at the ready to be used. This will mean I'll have quite a few batteries charged at the ready, limiting their cycling. I feel pretty confident age, not cycling will render their capacity poor given enough years. I will rotate them through to keep cycling them along to try and make them go as long as possible. All in all, these cells have been the best bang for the buck between enerloops and tenergy. While I've looked at other cells and nearly pulled the trigger on buying them, Tenergy's consistent performance for a price that seems unmatched by any other (reliable) have kept me buying them. At my current battery inventory, I will likely have enough cells to not purchase anymore until they begin the degrade. I may make updates to show long term degradation. Being a submarine electrician, batteries have always held my interest, though what we use in the fleet is limited to SRVLA and up until recently flooded lead acid. I've really enjoyed getting my hobby chargers and a slew of rechargeable cells this past year. I had dabbled in nimh cells ~6-8 years ago that were not LSD and found I couldn't readily depend on them for low drain devices and they seemed to fail rather often. At this point, out of the ~150 cells I've purchased, I've yet to experience a bad cell and have all but eliminated the alkalines from my house, other than a few stragglers in remotes that'll get changed out with Tenergys when they finally bite the dust.. If you've been looking at taking the plunge, ESPECIALLY if you're replacing battery's on a monthly basis (and it'll be more often than that if you've got kids), I highly encourage you to make an investment that will save you a pile of money in the long run and has the convenience of always having a supply of batteries at the ready. Granted, I spent a pretty penny this year between the cells, 2 good chargers, a Nitecore that does double duty to charge all my lipo batteries and my snazzy La Crosse, but I don't plan on spending anything on batteries for the foreseeable future. I've contemplated Tenergy rechargable Cs and Ds, but I use them rarely (Cs almost never) and most of the time I do, I have D cell adapters to use my AAs in, letting me get by on much lower capacity, but already purchased cell that can be recharged. ***Update June 2015*** All but 1 of my Tenergy AAs continue to work well. One appeared to develop somewhat of an internal short and required excessive charging to reach a charged state and had a high rate of self discharge. This is 1 failure our of ~100 cells over about 1 year. Comparatively, the dozen or so Enerloops have had no problems and I use on my highest drain devices as they seem to have slightly more capacity (tend to take ~ 2.3-2.5 a-h over the 1.9-2.3 the Tenergys do). While I have not done a refresh yet on any Enerloops, I have done a single refresh on ~1/3-1/2 of my Tenergys and have seen them appear to regain any/all lost capacity (except the one dud). This is done whenever I notice any that are fully discharged receive <2000mah on a charge. Again, despite the fact these do seem to not be quite as good as Enerloops, you're getting far more cells for the money at ~90% the capacity. The money saved can go a long way to purchasing extra cells which limit the cycles on existing cells, lets to power more devices and allows you to keep more charged cells on hand when it is time to swap batteries out. ***Update July 2016*** No other failures to report after another year between my AAs and AAAs. The one last year must have been a fluke. The cells are actually outlasting a Lacrosse 700 Mah charger I got for the main purpose of using the refresh feature, as one of it's slots doesn't charge at all and it's LCD panel is failing with it being unreadable for a couple cells. My kids are 5.5, 4 and 1.5. There was a time most all my cells were in use due to so many battery powered toys in the house. Now I have probably 30 of my 100-ish on standby in an old cigar box and 4 of my 50-ish AAAs on the box (little pirate ship for the boy uses lots of AAAs. I am constantly still rotating them through and they all seem to perform well, with the exception of 1 AAA. Pulling 3 from a LED toy, with 2 cells still >1.2 and one sub 1v. Charger only put in ~530 Mah. Refreshed it up to ~750 Mah, though that's a little light. I'll likely get another charger as my go-to is a i4 Intellecharger from Nitecore that'll charge my 18650s I use for my flashlights as well (great charger, BTW.). I used to do a 4 cell refresh ever 3-6 months for a catch of cells but I haven't been able to do that for nearly a year. I still will do a single cell now and then if it seems to have a substantially lower voltage after use, but they've been coming back to near it's ratings. I think I bought another 6 pack (24 cells) of AAs nearly a year ago, but most of them are 2 years+, and all of my AAA are over a year old... many pushing 2 years and going strong. As a note, I've had a few D-cell items when the youngest was a baby and used AA's with the AA to D cell adapters almost exclusively. While the run time was certainly diminished due to the lower capacity (I was swapping cells in a crib mobile about every week), I never really had to buy D cells. Ever. Pretty convenient. ***Update November 2017*** I did another round of refreshes and noted no real loss in capacity. I'm still using many battery powered toys with my kids now 7, 5 and 3. Of all my cells, I probably have 30 AAs and 12 AAAs charged and ready to go at anytime, with the rest in use. I cycle them through to ensure they all get used. I haven't bought a single alkaline other than some 9vs for smoke detectors in something like 3 years and have a pile of cells at the ready. Living in SE GA, when a hurricane threatened, I put fully charged batteries in all my battery powered items and charged everything that had been in use, ensuring everything in the home was charged. That way, I could scavenge batteries out of things I wasn't using if needed, and they'd be fully charged. I don't put much thought or care in my batteries. I have them, they're ready to go. They've paid for themselves several times over and continue to do so. Even if I have a handful of cells fail a year (and I've only had 1 failure in 3 years of the 100+ cells I have), I'm still a few years away from needing anymore. Highly recommended. ***Update May 2018*** I did another round of refreshes this past month. I noted 6 cells out of ~100 having exhibited capacity loss to where they are under 1800 mah. All were still ~1500 mah. I've written on them what their capacity was and earmarked them for low drain devices (ie remotes). Otherwise, I'm still going pretty strong. No outright failures. I haven't brought AA/AAA batteries in a few years now... save some 9v for my smoke detectors and a 2 sets of 4 Tenergy C Cells as I have a few devices that use them and it made sense to have dedicated cells for. AA to D conversions still work for what little D cell needs I have. ***Update November 2018*** Well, I had 1 AAA fail by leaking very slightly and tossed it... though nowhere near as bad as an alkaline can be. So now that's 2 cells down for the count after something like 4 years with no cell being younger than 2-3 years old. Not too shabby. I just went through and cycled all the batteries through the chargers getting ready for all the Christmas ornaments and little LED light strings I drape on my small apple tree that's in the middle of the yard, and wrapped around my mailbox. I expect I may finally start getting some failures in the coming year, but these cells have paid for themselves many times over both in cost and convenience. Now that some years have passed, I will say that the 24 or so Enerloops I purchased ~4 years ago (I can't remember it's been so long... heck, I don't think I've bought any more AAA or AA in 2-3 years... and that was to bolster my number of Tenergys) have all consistently retained full capacity with no failures and have consistently less internal resistance when checked against a random Tenergy cell. The majority of the Tenergy cells are still >90% after most have had many dozens of cycles... with the few aforementioned at ~75%. Those have been semi-retired to flameless candles and remotes. But... again, after 4 years I'd have to say, no, they aren't as good as Enerloops regarding maintaining capacity over time. That still represents about 90% of all cells still at > 90% capacity with a ~2% failure rate given my collection of somewhere between 100-150 cells. For their price point, I still think they represent an outstanding value. Considering the ability to spread more, albeit slightly lower capacity cells around vs the Enerloops for the same money invested based on the lower per cell cost, the Tenergys are still the way to go in that regard. I hold my 5 star review but after nearly a half decade, the Enerloops are showing to be a superior cell... and are priced higher accordingly. Update: 11/30/19: 5 years! No more failures over the last year. I did a refresh on all the cells mid-year as we had a few hurricanes make some close passes and noted most the cells were still holding 90%+ capacity with the few that were around 75% still hanging. I just spent the evening putting up Christmas stuff and emptied my “box of batteries” out into all the random ornaments and Christmas noise-making fun things. They’re still hanging in there and it’s been a few years now since I have bought a single AAA, AA, C or D cell. Between having all but the Ds, and adapters to fulfill that role... I’d be hard pressed to say how much I’ve saved over the years, but it would be several times the amount I ever spent on these. Not to mention, I’m never, ever without a battery. You never run out, you just toss the dead’s on the charger and pull a set of charger ones out of the box of batteries. Update 12/11/20: I had one more of the AAA fail out of the ~150 or so AA and AAA in the last year. High resistance made its voltage rapidly spike up... and got noticeably warmed in the charger... so it got chucked. I’ll be doing another round of refreshing at the end of Christmas... but my battery box (once again!) was nearly emptied out to put batteries in a couple dozen items... from ornaments on the tree to noise making plushies we spread around the house for the kids to play with. At some point I think I’ll start discarding old cells that are far below 75%... certainly below 50% and replace as needed to cover my needs during the holidays. It just hasn’t happened yet. It’s been 6 years now though and I still haven’t bought an Alkaline battery for my entire 6 year old son’s lifetime. I’ll keep them going as long as they’ll keep working for me. I wouldn’t think they’d hang for an entire decade... but we shall see... Update 10/31/21: About 7 years. I think that’s it. Pretty much all the cells remaining look like their capacity is now about 1400-1600 at the most with 1/4-1/3 south of that. More importantly, internal resistance has climbed to where my Opus BT-C2000 will no longer charge them at a 1000 mah. Most will only charge at 400-600 mah. Here in the last year, they just kind of aged like milk… and it’s kind of been most of them. The same internal resistance slowing charging rates make them have a Vdroop making them unsuitable for high drain devices. So what to do? I see I can get 60 AAs for $50 for a subscribe and save then cancel it and replenish my inventory. That’s well under $1/cell. Then? I think I’ll clearly mark the old cells and have them semi-retired to low discharge devices (i.e. flameless candles). I’ve had to discard 2 or 3 from no longer accepting a charge as well this past year, more than any other year. So… this may well be my last update. 5 very good years with only a failure or two then it’s been a gradually worsening trend from years 5 through 7 and at 7 years. Attempts at running them through recovery cycles is no longer recovering much, if any capacity. Stick a fork in them… they’re pretty much done. Update 12/4/22: Well.. I did get 60 replacement Tenergys for about $50 and 24 AAAs for under $20 around a year ago. I kept 1/2 of the best of the old cells for low drain devices and have the new cells for everything else. I expect this $70 investment will cover me for another 5 or so years from now at least. By then, my kids will be nearly grown. Not as a knock for the Tenergys, but the Enerloops I bought 8 years ago are still hanging in there, but I could buy 3 Tenergys (can buy AAs in a 60 quantity for under $1/each for the cost of 1 Enerloop (their best price is juuust under $3/each). If money is no object: get Enerloops. I pondered doing just that, but wasn’t willing to spend 3x the money for 1/4-1/2 of them to sit unused until Christmas. If you’re like me and have kids and times (like Christmas) where you literally need 100 batteries or more on hand to run piles of things… Tenergys are more bang for the buck. I think most of us won’t ever test the couple-thousand cycle limit of any of these cells. I’d be surprised if any of mine exceeded 100 cycles, and 1/4-1/2 my cycles are through refresh cycles on my charger. Age will get them first… 5-10 years seems like as long as you can hope for. If you look on the web there’s a little bit of data on 10-12 year old Enerloops and age gets them too eventually to where they’re only for low drain devices. They just fail a little less and hold up better along the way. Cost/performance for my usage style just isn’t there for me.

A few years ago, I bought some nice chargers (Powerex) and a whole bunch of rechargeable batteries. I wanted low self discharge so that I wouldn't have to keep checking if they were charged. I use them as emergency batteries as well, in lanterns and flashlights, so they need to be charged if the power cuts out (and if your power company is CL&P you can count on that being for weeks at a time on a regular basis). Anyways, I've found them to be excellent and use them in just about everything. I only use alkaline for smoke detectors, and that's partly because I don't have a 9V charger, and partly because alkaline does have the slowest self discharge (but are not rechargeable). You could probably use tenergy centura 9v in smoke detectors too. I've gone over a year w/o charging a battery and it functions like it was just charged. I'm sure there is a small amount of charge loss in a year, but I don't notice it. I would recommend the centuras as your main rechargeable go-to battery - I've been pleased I made the choice. Versus the eneloop, they are much cheaper and come in more sizes (I use D batteries in flashlights and lanterns, and in some other items - eneloops don't offer these). These will work for years in a remote control, wireless keyboard/mouse, or other low drain application. If you do go all rechargeable as I have, I would recommend going with a top notch charger. I strongly recommend the Maha/Powerex smart chargers, they have a very advanced charging logic built in, and I got mine on Amazon. I think that most people who have problems with low self discharge NiMH batteries do so because they buy lousy, cheap chargers that trickle charge or have poor mechanisms of detecting when the battery is full, and this is very bad for rechargebles, especially NiMH - the voltage drop that occurs briefly as the battery is full is less obvious than with NiCd. I think the Maha/Powerex Imedion line are probably a bit greater in charge capacity, but the price is far too high, so I use the tenergy batteries for much less money. Lastly, NiMH are not very toxic at all, can be disposed of (when they finally become useless - I have yet to throw any out) in the trash. Much, much safer and more green than the NiCd batteries. They also hold much more charge than NiCd. Lithium aren't practical in general as a replacement battery for regular sizes like AA, AAA, C, D, etc. - and I don't think you can even get rechargebles.

I purchased Tenergy Centura AA Low Self-Discharge (LSD) NiMH Rechargeable Batteries, 1 Card 4xAA , 1 Card 4xAA. These batteries are doing great for my first month using them. I use them in my Sony portable CD player to listen to books and they are much better than the Energizer Rechargeable batteries that I had been using. Plus they have held their charge longer than the Energizers. I guess the LSD[Low Self Discharge]is responsible for this. I, also, purchased the [Tenergy Centura AAA Low Self-Discharge (LSD) NiMH Rechargeable Batteries, 6 Cards 24xAAAfor my MP3 Player and use 1 battery in it (again listening to books)and 3 in my books light. They are doing better than expected. The AAA is holding it's charge very well...changing the battery every 24-26 hours of play for the MP3 player and changed it out after 6 nights in the books light (which I am using as a portable night light while staying with my daughter and new baby). I could have gotten more time out of the book light, however, the light was starting to get a little dim and I chose to change it out rather than see exactly how long it would take to wear it down completely. I am EXTREMELY satisfied with these products, especially since I read such poor reviews on the regular Tenergy batteries. The Centura has exceeded my expectations and the price made it well worth it. With that being said, I have only had these batteries for a month or so and can't comment on the long term wear of them. I can say that in this month, I have put them through their paces and the ear plugs in my ears....(two babies in the house, a 17 month old & 15 day old and when one cries the other picks up on it, so Grandma has the MP3 player or CD with books going 24 hours a day in one ear and the other ear listening to babies)I'm pleased to say the batteries haven't failed me yet!!! I hope that long term is the same.

I'm a photographer and most of my shoots involve 4 to 5 off-camera remote flashes that require a lot of power. I need my batteries to recycle my flashes quickly, operate efficiently for a long time (several hours), maintain their charge when stored in a camera bag for weeks at a time, and have a nice long life. These are tough requirements for any AA NiMH battery and extremely tough for a battery that costs under $2 per cell. I started moving over to NiMH batteries once the cost of 20+ alkalines being burned out in a single shoot became ridiculous to justify. I knew I needed to move to rechargeables so I began my research and bought all kinds of batteries and chargers to start testing. I got them all... From the cheapest generics to premium Eneloop XX and everything in between. I used a La Crosse Technology BC-700 Alpha Power Battery Charger to do my charging and testing. Now, a year later, the results are in. The Tenergy Centura are the only Tenergy batteries that made the final cut and earned approval. They are a seriously low price point and perform up to their 2000 mAh claim... At least to begin with. The first set arrived in February of 2013 which is almost a year ago now. They have been thru dozens of recharge cycles and I have drained them flat on numerous occasions. Today I ran a test cycle on that first set and they all came in between 1903 and 1942 mAh without a refresh cycle being run. I did this because most people won't have chargers that will do advanced refresh cycles like the BC-700 will perform. If I refreshed them, they would probably meet or exceed their original 2000 mAh claim. The batteries hold a charge for a long time, they offer solid mAh performance, and come in at the lowest price of any of the batteries that made my approved list. Even other Tenergy batteries didn't make it including the blue high performance models which simply didn't perform up to Tenergy's claims. These perform on par with the Amazon batteries and close to the Eneloops. For under $2 a cell, you simply cannot go wrong. If you want a solid rechargeable at a great price, this is your set! For batteries with more horsepower, look at the Panasonic BK-3HCCA4BA eneloop pro AA High Capacity New Ni-MH Pre-Charged Rechargeable Batteries, 4 Pack or the AmazonBasics AA High-Capacity Rechargeable Batteries (4-Pack) Pre-charged batteries which perform very well at higher mAh levels.

Purchased January 2018. Used for six months and had to put in garage because my father's alzheimers really kicked in so we had to put many things out of his reach. Anyhow today I stumbled across 4 of them and a charger, stuffed deep in the garage junk draw per se. My wife said just toss those they'll never work. There was dead insects, dust, etc all over it, after all I don't think I went in that draw for 4 years (garage is clean, but not that area). I as a joke wiped them down and plugged in. Shocked the charger lights worked, but was certain batteries would not. 10 minutes went by and I put one on the charger, no life. Charged 3 hours, fully charged! Are you kidding me! So I put into a personal fan 2 hours ago and it's still running strong on the high setting. Unbelievable! I then said I must put this on Amazon because the batteries are awesome. Remember, we used them every day for 6 months prior to burying so for a rechargeable this is down right impressive. I will be testing their actual output when my neighbor gets home. He has all those gadgets. I will do my best to update this review, but for now my opinions high on this product.

The product description of this item ( Tenergy Centura AA Low Self-Discharge (LSD) NiMH Rechargeable Batteries ) makes many similar claims as the original SANYO eneloop . The manufacturer even provided several charts, showing performance of Tenergy Centura to be nearly identical to that of Sanyo eneloop. Frankly, I don't have much confidence in Tenergy products. But the present low price (30% less compared to eneloop) is just too hard to resist. So here are my test results, using my old La Crosse BC-900 Battery Charger : - Right out of the package, the average remaining charge measured was only 520mAh, or 26% of the rated capacity of '2000mAh'. In comparison, Sanyo eneloop typically arrives with ~75% of rated capacity. - After the first recharge, two cells reached ~1250mAh, while the other two reached ~2100mAh. I'm surprised to see this discrepancy, because it never happened to other name-brand LSD cells I have tested. - After the second recharge, all four cells reached ~2100mAh. Subsequent charge/discharge cycles gave average capacity of 2108mAh. This is very similar to the capacity of Sanyo eneloop. It will take a few more months before I can have any long-term self-discharge data. As of right now, the Tenergy Centura seems to perform as well as advertised - at least after two full discharge/recharge cycles. So I consider Tenergy Centura to be a good low-cost alternative to Sanyo eneloop. But for mission-critical applications, I will still trust eneloop over all other brands. [Aside] Make sure you shop around for the best unit-price. Presently the 12xAA package is actually more expensive than three 4-pack, after you factor in shipping cost. [Update on Sep 24, 2011] Long term self-discharge data: After 3 months in storage, a pair of Tenergy Centurs AA cells retained 1770mAh, or 84.3% of original capacity. This number by it self looks great. But a disturbing finding is that, after two more charge/discharge cycles, the average capacity is now just 2015mAh, or 4% lower than what I measured before. I have observed this kind of capacity reduction previously in off-brand precharged cells (such as Lenmar Ready-2-Go R2GAA ), but never in Sanyo eneloop cells. [Update on Nov 27, 2011] Tested another pair of Centura AA cells after 5 months in storage. The results are similar: They retained 81.0% of original capacity, but their new average capacity dropped by 4% to only 2030mAh. [Update on Nov 19, 2012] I re-tested all four Tenergy Centura AA cells again on the same BC-900. To my surprise, their capacities are back to normal between 2070 and 2110mAh. I assume my previously measured lower capacities were affected by different ambient temperaure? Anyway, I have to restore my rating to 5-star since I can find no faults with this product.

I particularly like this brand of battery because of the way it is built. I have some energizer rechargeables where the plastic is already peeling away from the positive terminal just after a few uses due to normal fingernail prying to remove it from electronics with a tight compartment, which doesn't seem safe. Voltage on a fully charged one of these reads ~1.39v, whereas on the energizers it reads ~1.35v I am pretty sure it's typical for these batteries to read a slightly higher voltage than the listed 1.2v Great value buy. I don't own the amazon brand ones yet, but I chose these over them due to the way the white wrapping conceals all but the very tip of the + lead. To me that's just a smarter way to wrap your batteries to ensure they stay together. Update: Although these started strong, they deteriorated in quality rather rapidly. They now measure about 10% less capacity than the much older rechargeable energizers. Also offensive is calling these batteries low self-discharge, because they lose voltage without use super fast. Good enough for remotes, but when you use these in any sort of demanding environment like a light or a toothbrush, you will be quickly disappointed.

One year later, these batteries still take a charge and supply power. I have not counted the charge and discharge cycles but its a large number. I expected them to not last a year but here we are still using them. They are a better investment than I thought. Good quality..

Ya es mi segunda compra son pilas de muy buena calidad, me gustan más que energizar o Duracel recargables. También tengo Panasonic Japonesas y sin las únicas que son mejores que estas.

This brand is my go-to for low self discharge batteries - batteries for things that sit around not being used a lot, like flashlights, because they maintain power for a relatively long time in that situation. Not the highest output, but that is the trade off to get longer life while not being used. Great batteries!

I bought these to use for my Wii remote controllers, as I didn’t want to buy more batteries just to replace them a month later. These rechargeable ones have lasted me so far. Quite happy with these.

Tenergy are the most reliable NiMh batteries for the money. I use their D cells as well and they hold 10,000 milliamps when full !! Cheers

Pilas con buena duración