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Thread: Is charging the 18650 a major event in your life?

  1. #1

    Default Is charging the 18650 a major event in your life?


    Charging batteries is the highlight of my evening. The Nitecore D4 Digicharger stays
    on the floor in the biscuit tin and the weekly discharged 18650s are nearby ready to be locked and loaded and boy do I pay due care. I mean these guys will blow your ears off if they get pissed, right? I tried explaining to my wife how high energy cells need treating but she ended up yawning. In the end I went with the line from Spiderman The Movie “With great power comes great responsibility” and the following educational video:





    How do you charge yours?
    Last edited by Whiskers; 04-10-2015 at 11:54 AM.

  2. #2

    Default Re: Is charging the 18650 a major event in your life?

    Get a life!

    Just kidding!

    I'll admit iy gives me a bit of a "rush" to charge a bunch of 18650s at the same time - I'm very aware of the awesome energies involved, and the large aluminum baking tray I put the chargers on when charging seems awefully thin sometimes!

  3. #3

    Default Re: Is charging the 18650 a major event in your life?

    Once I waded thru all the overinflated hype online and youtube videos of people hooking these up to car batteries, I realized it's just another thing in life...like plugging in your toaster or driving a car. You can easily get killed walking your dog.

    No big deal. Just buy good cells and chargers. If the deal is too good to be true, it's probably a fake.

    I left some cells charging for about 2 days this week; totally forgot in the basement! That $.25 part did it's job to stop charging. Same as the $.25 part somewhere in a plane from keeping it from crashing. Same as the $.25 part that works to inflate your airbag at 60mph.
    GOOD TINT!

  4. #4

    Default Re: Is charging the 18650 a major event in your life?

    My only free plug outlet is under my bed. So it get's charged on my bed, on top of my spare pillow.

  5. #5
    *Flashaholic* Nicrod's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by freman View Post
    My only free plug outlet is under my bed. So it get's charged on my bed, on top of my spare pillow.
    Eeek! This would scare me. Make sure your charger can breath. A lot of charger's breath from the bottom,
    so you could be blocking the vents by using a pillow.

    Luckily the new NiteCore chargers have their vents up top!
    Just something that came to mind! I'm sure you know what your doing tho.

  6. #6
    ven's Avatar
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    Default Re: Is charging the 18650 a major event in your life?



    Seriously????

    Charging my cells is like opening a can of soup..............yes that exciting for me

  7. #7
    Enlightened
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    Default Re: Is charging the 18650 a major event in your life?

    I treat it with care, about the same care as plugging my phone into its charger.

    plug in, turn on, walk away...

  8. #8

    Default Re: Is charging the 18650 a major event in your life?

    Guys as I type, I'm charging three brand new 18650 batteries in my Nightcore D4. Charging time has been 3 hours 45 minutes at the moment. They are 4.04 volts right now. I did leave the house for about two hours. Are you guys telling me I could cause a Black Hole if things go bad and I'm not available to immediately stop charging? Don't do this to me, please.

    I am an old farted geek. I used to me a young motorcycle geek forty years ago. Today, I get excited about firing up my new Techno-Toys as I did back then firing up my Harley. Sick? Maybe. A Nerd-Geek? Definitely.

  9. #9
    ven's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    Hi mr oath,tbh 99.9% of the time you will be fine,however that 0.01% there is always a slight potential risk.

    Simply put,its good practice to charge cells whilst your in the vicinity,ideally not left whilst out or over night when one is asleep. Most chargers will be done within 4hrs,even quite deep cycles. So rather than take any potential risk,eliminate them,and stay in the house.

    Example-i charge at least 4 cells a day,i dont leave over night or nip out,highly unlikely with a good brand charger and cell,but still i am always around "just in case".

    Most chargers do terminate,the nitecore d4 does,as with any electrical item,they should never be relied on fully,so call it better to be safe than sorry.

    Just way i am ,my opinion............too add,never had an issue in many years of charging and uses.

    Regards ven

  10. #10

    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by Keeper Oath View Post
    ...Are you guys telling me I could cause a Black Hole if things go bad and I'm not available to immediately stop charging? Don't do this to me, please....
    Black hole? No... Char-broiled house? It's possible. I always babysit my chargers when they're running.

  11. #11
    Flashaholic* Overclocker's Avatar
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    Default Re: Is charging the 18650 a major event in your life?



    charging singles no big deal. but when juicing this one up i don't F around...

  12. #12
    ven's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    pic overclocker .............little OTT for a head torch though !



  13. #13
    Flashaholic* Str8stroke's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by freman View Post
    My only free plug outlet is under my bed. So it get's charged on my bed, on top of my spare pillow.

  14. #14
    Flashaholic* hiuintahs's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    deleted
    Last edited by hiuintahs; 04-11-2015 at 09:36 PM.

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    Default Re: Is charging the 18650 a major event in your life?

    It is absolutely routine...but I do charge only when I am home. No problem charging overnight, and I don't watch it every minute, but the idea is to be able to respond if there ever was an issue. Just like any other situation that could potentially cause a fire...seems like common sense, even if the odds are quite low. I have a fire extinguisher (amazes me how many people don't) and I charge on a slate surface, which helps keeps the chargers cool.

  16. #16
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    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by Overclocker View Post

    charging singles no big deal. but when juicing this one up i don't F around...
    When I'm charging my single 18650s, I babysit them, but that is on the next level!

  17. #17
    Flashaholic* subwoofer's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    A complete non-event, and I do a lot of charging.

    Houses have smoke alarms (or should do), and the most I do is make sure the charger is not on or very near to soft furnishings.
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  18. #18

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    Default Re: Is charging the 18650 a major event in your life?

    Nope, not at all.

  19. #19

    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by hiuintahs View Post
    When I see how cheap some of these off the shelf chargers are, I have to wonder exactly how it is designed.
    As a counterpoint: a Li-ion charger is basically a regulated voltage source with a current limit. A good/fancy charger may add all sorts of things to that like different charge currents, reverse polarity detection, bringing an over-discharged cell up sloooowly, voltage display, etc, etc. But if you keep things simple, a Li-ion charger is one of the simplest pieces of electronics to make. And thus in practice, even a cheaply produced one can do a decent job.

    For comparison a decent NiMH charger must at least watch how a cell's voltage develops over time. And perhaps temperatures too (not that watching temps would be a bad thing for a Li-ion charger, but just not as needed as with a NiMH charger). That means some kind of 'intelligence' (read: microcontroller) must be in there. Now those are also cheap in numbers, but still more expensive (and more complex to design with) than a simple voltage regulator. Plastic housing & some metal springs / clamps cost 'nothing'.

    For peace of mind, I ended up designing my own lithium ion chargers......a 12v and a USB powered. But I still only will charge when at home and nearby.
    Power to you! Personally I have better things to do with my life than design YABC (Yet Another Battery Charger).

  20. #20
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    Default Re: Is charging the 18650 a major event in your life?

    I use 2 hobby chargers that are powered by an old computer PSU.
    Both my hobby chargers have a magnetic temperature sensor and I have set the cut-off temperature on my chargers to within 5 degrees of what I've previously seen the cells get to during a normal charge.
    I like the fact that a cell starting to get hot will trigger the charger to stop charging it, this seems like a really sensible precaution to me.
    I also use two 1 foot x 1 foot ceramic floor tiles to sit my PSU, chargers and batteries on - seems safer than sitting them on my pillow!!!!!

    With my setup I'm pretty happy that a nasty event is unlikely and I'll happily leave the chargers to do their job.
    So many lights, so little money (cause I spent it on lights). I'm not afraid of the dark, the dark is afraid of ME!

  21. #21

    Default Re: Is charging the 18650 a major event in your life?

    To all you addressed my comments in the #8 post. I used to be into R/C Cars and had top notch equipment. I was always around when I was charging my hot-rod batteries. Why I think my torch batteries aren't as big a deal, I do not know. I think you very much for enlightening me. You may have saved my home as well as my life. My cats say thank you too.

  22. #22

    Default Re: Is charging the 18650 a major event in your life?

    I don't go to such lengths. I charge them on my nightstand. I just make sure I'll be home, and take them off the charger as soon as they are done. I will check intermittently to make sure they don't get too hot. I also have some good quality chargers, so I'm not too worried.

    I think it's good to be a little cautious and respect the batteries, but like others have said there are dangers in anything. Being that worried about charging these batteries is a little excessive in my opinion. As long as you invest in good quality, you will likely be fine. I do laugh when I see someone paying as high as several hundreds of dollars for a light, and then bargain hunt for batteries.






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  23. #23
    Flashaholic LeafSamurai's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by Berneck1 View Post
    I don't go to such lengths. I charge them on my nightstand. I just make sure I'll be home, and take them off the charger as soon as they are done. I will check intermittently to make sure they don't get too hot. I also have some good quality chargers, so I'm not too worried.

    I think it's good to be a little cautious and respect the batteries, but like others have said there are dangers in anything. Being that worried about charging these batteries is a little excessive in my opinion. As long as you invest in good quality, you will likely be fine. I do laugh when I see someone paying as high as several hundreds of dollars for a light, and then bargain hunt for batteries.






    Sent from my iPad using Candlepowerforums
    +1 to this post. I only charge them when I'm free and take them off the charger straight after they are done. As always, the golden rule is have good name brand chargers and don't let them charge for too long. I can understand the irony of someone paying big bucks for a light, but then buying cheap low-quality batteries. Some people tend to compensate for buying something expensive by buying something else cheaply, which sadly can be the batteries used for a particular flashlight. Have seen it many times.

  24. #24

    Default Re: Is charging the 18650 a major event in your life?

    Get a life!

    Just kidding!

    I'll admit iy gives me a bit of a "rush" to charge a bunch of 18650s at the same time - I'm very aware of the awesome energies involved, and the large aluminum baking tray I put the chargers on when charging seems awefully thin sometimes!



    @Amelia I use the wife's cookie tin. I guess she’ll thank me the day something sets on fire and the only collateral damage is her Oreos. Heh kidding. I take the Oreos out first. I need something to eat while I stare at my charger for four hours!
    Last edited by Whiskers; 04-12-2015 at 12:03 AM.

  25. #25

    Default Re: Is charging the 18650 a major event in your life?

    If battery came to me from reliable source, it is fresh, and charge/discharge cycles are managed by me, I know what to expect, so I'm just relaxed, as in case with NiMH. If batteries are low end, come from unknown sources with no info on already used cycles, I prefer to handle them with care, but prefer to give them away, without using at all.

  26. #26
    ven's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by CuriousOne View Post
    If battery came to me from reliable source, it is fresh, and charge/discharge cycles are managed by me, I know what to expect, so I'm just relaxed, as in case with NiMH. If batteries are low end, come from unknown sources with no info on already used cycles, I prefer to handle them with care, but prefer to give them away, without using at all.
    Well if i ever receive some NiMH cells via mail from you...................i know i have upset you


  27. #27

    Default Re: Is charging the 18650 a major event in your life?

    I'm usually giving away 18650s....

    A friend of mine works at computer service center, so he often supplies me with dead laptop batteries. Dealed already with about 1000 cells and collected some interesting data:

    1. Most depleted and fragile - Sanyo
    2. Low internal resistance, but bad capacity - Panasonic
    3. 50% chance - Samsung
    4. Deepest recovery gives up to 90% of capacity - Sony
    5. Rarely to see at all - LG

  28. #28
    ven's Avatar
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    Default Re: Is charging the 18650 a major event in your life?

    Interesting results there curious one

  29. #29

    Default Re: Is charging the 18650 a major event in your life?

    Quote Originally Posted by CuriousOne View Post
    If batteries are low end, come from unknown sources with no info on already used cycles, I prefer to handle them with care, but prefer to give them away, without using at all.
    Haha have some of my spare hand grenades. I've lost the pins!

  30. #30

    Default Re: Is charging the 18650 a major event in your life?





    *Wonders if it can be wired up to wife's personal massager*

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