Recent content by MrElvey

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  1. M

    Sony CycleEnergy 3800mAh Ni-MH AA-cells

    Have to quibble with this. All the major battery manufacturers have formed a cartel and have been controlling prices. They got busted for this; google it. Rechargable batteries should be a lot cheaper than they are; so other companies can create a good product cheaply and enter the market...
  2. M

    9-volt battery roundup (testing needed); SunLabz ; AmazonBasics v Tenergy v EBL...

    FYI, I updated my OP-cuz I feel more positive about the Li-ion options now. What do you mean by them? You including the new Li-ion ones? There are so many different chemistries, not to mention brands, it seems unfair to put all rechargeables in the same bucket.
  3. M

    9-volt battery roundup (testing needed); SunLabz ; AmazonBasics v Tenergy v EBL...

    I recall I also got some Tenergy [correction: non-Centura] 9v cells some 4 years back and they were also 'fine/usable' 'till my roommate trashed most of 'em, not realizing they were rechargeable. They discharged too fast in ionizing smoke alarms to be practical, and that's what I got 'em for...
  4. M

    9-volt battery roundup (testing needed); SunLabz ; AmazonBasics v Tenergy v EBL...

    I really wish someone (HKJ/NLee the Engineer, perhaps?) would test some 9-volt batteries for capacity - perhaps as thoroughly as they tested 18650's. I see someone did some testing in 2010*, but mAh wasn't measured at all (and the market and/or technology has changed pretty substantially)...
  5. M

    Amazon Basics AA/AAA Alkaline Batteries

    I'm convinced. I hear other people haven't experienced leaky alkalines, but I have, several times. When they leak, they make the device's connectors corrode, which sometimes can be repaired with some careful sanding, but often can't, and it's very time-consuming.
  6. M

    Ouch! Exploding vaporizer rips hole in man's tongue

    My understanding of in-cell protection systems is that they're a lot better than minimal, and do prevent or mitigate some pant-on-fire incidents. I bet there's good scientific reasoning behind the batteries in Teslas having in-cell protection systems, not just larger systems.
  7. M

    Ouch! Exploding vaporizer rips hole in man's tongue

    I rated them accordingly at https://www.mywot.com/en/scorecard/originvape.com. There are lots of good protected batteries - see PCB protection trip at http://lygte-info.dk/review/batteries2012/Common18650Summary%20UK.html Kudos to SONY for sending the letter.
  8. M

    Test/Review of GTL 18650 5000mAh (Blue)

    Huh? I didn't say they they made the ones that are the topic of this thread. But the reviews HKJ has posted on his site (and I think here) indicate that even Panasonic, Sanyo, and Samsung don't honestly label their 18650 batteries. I do think they make their own stuff. But they are at least...
  9. M

    Fake Ultrafire 18650 battery warning

    I'm amazed that with all the information out there, these sub sub sub-standard batteries are not only selling well, consumers are overwhelmingly happy with them. ​(Reviews of ​UltraFire TR 18650 4500mAh : 191positive 1 neutral 5 negative, 3 of which relate to shipping)
  10. M

    Test/Review of GTL 18650 5000mAh (Blue)

    I think there's a lesson here for Panasonic, Sanyo, and Samsung: Honestly label your batteries. Don't sell batteries that don't meet spec. If you do, consumers will trust you less, and be more likely to go with competitors, who will be even more dishonest than you, and in the cesspool you've...
  11. M

    Test/Review of GTL 18650 5000mAh (Blue)

    I bought a 4-pack of "5000 mAh" batteries on eBay that perform like these. They're just like these visually and, except instead of "GTL", they say "ICR". They say "+ ICR 18650 5000mAh 3.7V -" and even the font is the same. Different is that they come shrink-wrapped, individually, each in its...
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