AmazonBasics AAA Rechargeable Batteries (8-Pack) Pre-charged - Packaging May Vary
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Most helpful customer reviews
1440 of 1462 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.
3 of 3 people found the following review helpful.
good so far.
i bought these and the amazon basic black AAA batteries. I haven't had time to test the longevity of these as i just got them yesterday, but after reading other posts and questions, these (white) are not better then the black batteries. They both are made in japan, black and white, and the whites are 750-800mah rated, the blacks 850mah rated. I read the whites were eneloops, and the blacks made in china, but it seems the blacks are slightly better performing, and thus the few dollars more for the blacks. Will report more after i use them, but so far all the batteries are charging fine and seem strong.
1 of 1 people found the following review helpful.
Good batteries, they do the job
By Ro Ma
I am neither qualified nor inclined to get into the debates about whether these are rebranded Eneloop batteries or something else entirely, and which rechargeable batteries should be recharged in which chargers.
Unlike coat hangers, which seem to multiply and proliferate by night, my rechargeable batteries seem to disappear and I never have enough of them around, so I was glad to be able to buy these in a quantity that gave me a price break.
My battery needs are varied and I find that these get the job done at a good price. The only reason I deducted one star in my rating is that they do seem to have slightly less power and may need to be charged slightly more often than other brands. On the other hand, that is what chargers are for, and I don't find it inconvenient to recharge them once in a great while.
Bottom line: I would buy them again if I need more.
I paid for these with my own money and I have no personal or business relationship with the vendor, manufacturer or Amazon.