AmazonBasics AA Rechargeable Batteries (8-Pack) Pre-charged - Packaging May Vary
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Looking for rechargeable batteries that truly last? The AmazonBasics Ni-MH Pre-Charged Rechargeable Batteries benefit from cutting-edge, low self-discharge technology - just one of the many perks of these high-quality, reliable batteries. Stay charged for years. Really. The AmazonBasics Ni-MH Pre-Charged Rechargeable Batteries have a low self-discharge technology. Your batteries can sit unused for months or even years and will still be ready when you need power. For peak performance store fully charged batteries at 68 ?F / 20 ?C. Full charge. Time after time. The maximum amount of charge a battery will hold is called its "permanent capacity." Some batteries lose permanent capacity after storage which means reduced run time. The AmazonBasics Ni-MH Rechargeable Batteries don?t suffer from this problem, so they can be fully charged again and again. Go full throttle. Not only can AmazonBasics be used again and again, they also work well with a variety of devices. Comparable to the power of single-use alkaline cells, AmazonBasics batteries perform especially well when used to power high-drain devices such as digital cameras, electric toothbrushes, torches etc. Batteries that beam You want your torch to be ready when you need it. Torches that use ordinary batteries can shine dimly after sitting unused for too long. AmazonBasics Ni-MH Rechargeable Batteries shine brightly even after storage. AmazonBasics batteries are perfect for high-power, high-drain devices.
Most helpful customer reviews
1363 of 1381 people found the following review helpful.
No, those are NOT rebranded first-gen Sanyo eneloop cells
By NLee the Engineer
I have previously tested the original AmazonBasics NiMH Precharged Rechargeable Batteries (in black wrappers) back in 2011. Recently I purchased a set of those new AmazonBasics NiMH Pre-Charged Rechargeable Batteries (in white wrappers), because people kept asking me: "Are those rebranded 1st-gen Sanyo eneloop batteries?" Based on my observations so far, the short answer is "NO". But wait, don't leave yet!
I measured the capacities of those AmazonBasics AAA batteries, using my La Crosse BC1000 charger. Here are my findings:
- Right out of the package, the average remaining charge is 562mAh, or 70% of the rated '800mAh' capacity.
- After one recharge/discharge cycle, the average capacity jumped to 797mAh.
- After another 2-3 more cycles, the average capacity leveled off at 821mAh
The above behavior is consistent with my previous test results for original (1000-cycle) eneloop, 2nd-gen (1500-cycle) eneloop and 3rd-gen (1800-cycle) eneloop cells. Note that just as in this case with AmazonBasics cells, all eneloop cells are charged to around 70% when they left factory.
Based on electrical characteristics, I believe that those white AmazonBasics cells are indeed rebranded Sanyo eneloop cells. But it is impossible to tell whether they are in fact 1st- or 2nd-generation eneloop. This is because to the end-user, there are no measureable performance differences between 1st, 2nd or even 3rd-generation eneloop cells beside their cycle life claims.
Because of the '1000-cycle' claim, most people would jump to the conclusion that white AmazonBasics cells are equivalent to 1st-gen Sanyo eneloop. My closer examination, however, suggested that they are more likely to be rebranded SECOND-generation eneloop instead.
Please refer to the picture I uploaded to 'Customer Images' section. Look closely at the positive terminals of those three types of batteries, and you'll notice the difference in their so-called 'vent holes' (the name is misleading because those openings are not actually used for venting):
In the case of AAA cells:
- First-gen eneloop AAA cell has triangular-shaped vent holes
- Second-gen eneloop AAA has vent holes with rounded tops
- White AmazonBasics AAA has vent holes with rounded tops
In the case of AA cells:
- First-gen eneloop AA cell has triangular-shaped vent holes
- Second-gen eneloop AA has no vent holes
- White AmazonBasics AA has no vent holes
Therefore based on their mechanical aspects, I have to say those white AmazonBasics cells are most likely rebranded 2nd-gen Sanyo eneloop cells.
Why would Amazon intentionally sell rebranded 1500-cycle eneloop cells as just 1000-cycle? The answer is Price Differentiation. Manufacturers often de-spec a product when it is sold under different brand at a lower price. Otherwise it will erode the market for their higher-priced brand.
What if I'm wrong and those AmazonBasics cells are 'only' 1000 cycles? Well, you could find out the difference in... TEN years. So for now, just pick whichever brand is on sale and be happy.
5 of 5 people found the following review helpful.
Performed excellently thus far.
By Alexander Tosspot
Had these for almost a year, and they are still charging to capacity, and giving me hours of power.
One pair of these I have in my wireless keyboard, and the other goes in my electric trimmer. The batteries in my wireless keyboard need changed about every six weeks. In the trimmer about every month. So while the non rechargeable batteries I was using lasted longer by maybe a few weeks in each device, it lacked the ability to reuse them. So that automatically makes them better. Measuring usage length in months is not exactly a time point in which i have to worry too terribly much.
Batteries charge to full capacity in about four hours. Although saying that i really haven't timed it. But it's not long enough to get impatient over. And I have yet to notice a degrading of performance in the almost year of using them almost nonstop. I suppose I've been using them in what you would probably call low drain devices, but still. I've probably charged both pairs at least a dozen times.
These are sold as having 1000 recharge cycles, and I'm inclined to believe it. These seem well made, and there hasn't been a performance hit since I've been using them. The cells are more likely to degrade and die before it stops holding a charge.
These are certainly cheap enough that it's basically replaced non rechargeable batteries for me, and has also outlasted the rechargeable Energizer batteries that came with the charger in the first place. Those sad things managed about five charge cycles altogether.
They of course look very plain, because they are white with the exception of the Amazon branding on them. But this hardly matters. They perform the task that they need to. And they don't feel cheap in the least. A little light, but that's just the nature of the beast that is Ni-MH rechargeable batteries. Not a knock on it's quality.
So yeah, if you are looking for some rechargeable batteries, you could do worse on even the brand name stuff. I recommend these.
4 of 4 people found the following review helpful.
NiMH and NiCD chemistry batteries) charges these things like lightning. They're 750mah
As depicted, these did not arrive fully charged, although 3 out of 4 carried enough charge that you wouldn't tell the difference if you threw them in your remote. Be prepared to charge these after they arrive, as I am certain these self discharge quite quickly (which is relatively normal for NiMH chemistry batteries- expect to store them charged, and six months later, they'll need a recharge)
In the posted photograph, my charger (available on Amazon, the 4 bay Thru-Nite for Lithium, NiMH and NiCD chemistry batteries) charges these things like lightning. They're 750mah, it tops them off in about 35 minutes. When I ordered, 3 were at 1.1v, and the 4th was at 0.2v. Take "Pre-Charged" with a grain of salt, and have a charger at the ready.
They work as well as you'd expect a AAA to work, and I'd certainly buy them again. However, Tenergy certainly has a better offering, and at the time of my review, are at a lower price. Most Tenergy brand batteries I have purchased have not come precharged, but they offer lower self discharge for storage, and Tenergy is... well, the king of NiMH and LiPo batteries. Tenergy Centura AAA Low Self-Discharge LSD NiMH Rechargeable Batteries might be a better option, although I certainly wouldn't want to discourage someone from buying these- they work fine.