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  1. SYZYGY

    Years of reading and battery safety is a mystery to me

    i have MC3000 and like it. i store cells at room temp 50% SoC.
  2. SYZYGY

    Years of reading and battery safety is a mystery to me

    why would you assume a reasonable person wouldn't accept reasonable experimental evidence? do you assume i'm not a reasonable person? 🤔 🤦‍♂️ like i said, i haven't found a good study showing the result of cold storage in a home setting. and it sounds like you haven't either since you haven't...
  3. SYZYGY

    Years of reading and battery safety is a mystery to me

    yeah, for my personal use... if i have excess cells that i'd even consider storing in the freezer for long(er) term preservation, i'd say i overbought. if the number of active devices i use regularly is N, then i try to have around N+2 cells. that doesn't mean i'm not interested in what we've...
  4. SYZYGY

    Years of reading and battery safety is a mystery to me

    i don't think it's obvious. i have only been entirely honest in this thread. also, did you really not intend offense? i am skeptical, lol. for the record, i don't store cells in the fridge or freezer because i simply don't care that much about my cells' capacity over time. i'm not going to...
  5. SYZYGY

    Years of reading and battery safety is a mystery to me

    i have a lot of sensors and test equipment (for other hobbies and work), and tbh RH measurement accuracy gets problematic at freezer temps. anyways, i won't be convinced either way without a real world capacity loss experiment. theorizing all day doesn't answer the question.
  6. SYZYGY

    Years of reading and battery safety is a mystery to me

    tbh even after all of that, i'm not 100% convinced one way or another under 'normal' (lazy) storage protocol in a fridge or freezer. i'd need to see real world capacity tests. i'd love to see an experiment like this... regular old consumer fridge/freezer combo appliance with defrost cycle...
  7. SYZYGY

    Years of reading and battery safety is a mystery to me

    i for one am glad to see a good, old fashioned flame war. been a while. tired of nanny state communities. i don't mind them if there is some halfway decent discussion accompanying them and if they are half way respectful. i think this one was ok in those regards.
  8. SYZYGY

    Years of reading and battery safety is a mystery to me

    no need to be a prick about it. it's not self bias. i'm seriously asking you if you've seen a paper about it because i'm curious about the subject. a snopes article about duracell giving generic advice to the mass market about putting alkalines in the fridge is not what i'm asking about for...
  9. SYZYGY

    Years of reading and battery safety is a mystery to me

    it doesn't matter how much moisture is in the fridge/freezer. if you use a good enough vapor barrier packaging, outside moisture isn't getting in. i also said you could use a desiccant packet if you like, but if you don't do that, reducing dead space by squeezing air out before sealing will...
  10. SYZYGY

    Years of reading and battery safety is a mystery to me

    i guess you didn't read my post. np. the atmosphere in the freezer is isolated from the atmosphere of the batteries (a bag which has dry air and/or does not have enough volume to produce appreciable liquid at freezer temps).
  11. SYZYGY

    Years of reading and battery safety is a mystery to me

    i get what you're saying, but did you miss most of my post where i explained how to prevent that from happening? i'm not interested in storing cells in a wet environment at any temp.
  12. SYZYGY

    Years of reading and battery safety is a mystery to me

    is it really a myth, though? unless it was all bs, i feel like i've seen some convincing experimental evidence that suggests capacity loss slows down at lower temps. it also makes sense conceptually (chem kinetics are temp dependent). also, your article is from snopes, it's not about liion...
  13. SYZYGY

    Years of reading and battery safety is a mystery to me

    interesting discussion. hopefully not too off topic, but i have a safety question. this cell was used: https://www.vapcelltech.com/h-pd-41.html (Vapcell 18350 M11 1100mah 9A) it was used in a D4V2 with boost driver. it was probably used in normal operation until it got low, and then it sat...
  14. SYZYGY

    Anything new expected from Zebralight in the near future?

    h600c is what i would get, too. the non-18650 offerings don't interest me. there is an A6 model in the works, but who knows if or when that will come out. i say just get h600c.
  15. SYZYGY

    Need a Non-Conductive Work Light

    would your boss tolerate a taped light? how about a few layers of electrical tape over the whole thing? you can tape the cap separately or just cut a slit. not ideal for thermal performance, but if you don't want to buy another light, or if you really like what you already have...
  16. SYZYGY

    Why do the contacts on batteries need cleaning every so often?

    aren't the batteries in this thread liions? have you really seen those leak and cause corrosion? i never have. i figured the corrosion was just caused by contamination from the environment. or from the corrosion-resistant plating wearing off on the spring or something.
  17. SYZYGY

    Why do the contacts on batteries need cleaning every so often?

    ^ this is another good suggestion lol... do you say this from experience? forgive me if i'm incorrectly assuming that you're not, but... the "electrical grease" you linked to is actually an example of a dielectric grease... further... it's true that dielectric grease is an electrical...
  18. SYZYGY

    Why do the contacts on batteries need cleaning every so often?

    i think that's worth a try. clean everything up really well and verify a low resistance connection first, though. also, remove moisture as well as you can. btw, by paste, he means grease and not sealant (caulk) :) you could also use a grease specifically labeled for the task. look for...
  19. SYZYGY

    Why do the contacts on batteries need cleaning every so often?

    or maybe the plating wore off, and oxide's getting in the way?
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