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  1. Rossum

    ◙ Li’l PINCH (←thang) ◙ pdib (←maker) ◙ not sayin’ (←just sayin’) ◙ shuh-ZAM! (←hyperbole)

    We're at four deer so far. I guess that's better than nuthin''?
  2. Rossum

    Are you done stocking up?

    First and foremost, I would check their voltage every 6 months to a year. If substantially below 3.6V, I would bring them back to 3.6V. I think they'll be OK for a few years. I have some VTC5s that were made in January of 2014 that have been used lightly off and for six years now...
  3. Rossum

    Are you done stocking up?

    Yes. I wanted something that would measure capacity in an accurate and repeatable way. I don't disagree.
  4. Rossum

    Are you done stocking up?

    For charging to 3.6V, any charger that has a setting for LiFePO cells should work. I use an XTAR VP2. On that charger, it just a matter of sliding a switch to the correct position. For discharging (and measuring capacity!) I use this: However, that's fairly spendy; roughly $160. But...
  5. Rossum

    Are you done stocking up?

    If I were inclined to stockpile batteries, I'd do it as follows: Charge 'em to 3.6V using a charger set to LiFePo (e.g. XTRA VP2). Store them in my fridge. Pull them out once per year, allow them 24h to come to room temp. Charge to 4.2V @ 0.5A. Discharge to 2.8V @ 0.2C and make a note of their...
  6. Rossum

    Are you done stocking up?

    18500s aren't very popular and I could see them becoming hard to find due to market factors rather than government actions. I don't worry much about 18650s at this time.
  7. Rossum

    Longterm Battery Storage - What is 40%?

    Easier to measure than AC IR? I respectfully disagree. To properly measure capacity, one must fully charge the cell, and then discharge it at 0.2C. The latter intrinsically takes 4-5 hours. Measuring AC IR takes a few seconds.
  8. Rossum

    Longterm Battery Storage - What is 40%?

    Yeah, that one got me curious. AC/IR clearly increases with user (and to a much lesser extent age). So I started wondering how that correlates to capacity and got this as well:
  9. Rossum

    Longterm Battery Storage - What is 40%?

    Eight VTC5As, two under each storage condition. This batch started July of 2019. I tested them both before and after after one year in storage. I'll test them again after an additional year has passed, so next summer. This July I added eight more cells, P26As, again two under each condition...
  10. Rossum

    Longterm Battery Storage - What is 40%?

    Why? Look at some battery data sheets. They all allow storage at very low temperatures. Note that they must be allowed to come back up to operating temperature before being charged. Charging a cold battery is bad news, so don't do that.
  11. Rossum

    Longterm Battery Storage - What is 40%?

    There seems to be some controversy over this, which is why I decided to do some actual testing. :)
  12. Rossum

    Longterm Battery Storage - What is 40%?

    Voltage and SOC don't have a totally linear relationship. If they did, I'd say 4.2V is fully charged and 2.8V is fully discharged. So 1.4V difference. 4.2V less 60% of 1.4V is 3.36V. Personally I've settled on 3.6V as a storage charge. It works well. Oh, and keep 'em cool. I'm doing...
  13. Rossum

    Are you done stocking up?

    Dang, I forgot about that one. Probably because I didn't need to stock it; my wife uses it fairly regularly and always has some around.
  14. Rossum

    Are you done stocking up?

    Vitamin C Vitamin D Zinc Quercetin NAC Ivermectin (*) Everyone has stocked up on these these things, right? (*) Technically a prescription drug, but readily available for horses from Amazon and we all have horses, right?
  15. Rossum

    Let's get serious for a moment

    Thumb. Because top-fire squonkers. :)
  16. Rossum

    Are you done stocking up?

    Yes, but it does that in glass as well, so I don't think that's due to an interaction with or leeching from plastic.
  17. Rossum

    Are you done stocking up?

    Hard to say. Some flavorings will get icky on their own after a few years, and some flavorings slowly react with nicotine and get eventually icky, while other flavorings seem to stay decent "forever" even when mixed with nic.
  18. Rossum

    Are you done stocking up?

    I do not. But I'm probably the odd man out on this. Me either. But glass bottles are available in larger sizes too. Heck, you can get them as big as a 5-gallon carboy (not that I'm suggesting this). Me, I use quart/liter sized glass bottles for my PG and VG. Why? I simply don't...
  19. Rossum

    Snails - Response on Threads Part 8

    Hey guys, Classy is in the hospital with a kidney infection and a big kidney stone. Surgery scheduled for Thursday. She has no internet access and likely won't be on-line until the weekend. No, I don't know exactly which hospital or any other details at this time.
  20. Rossum

    Rayon Wick - Better Flow, Flavor, Longevity, and Nic Hit!! - Pt.2

    You don't need to unroll 4000 balls. When you unroll one, you get quite a few wicks out of it.
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