1. If you would like to get rid of these banners and the ads within the posts, all you have to do is sign up and they will go away!
  2. Welcome to Rc-Help, are you here looking for the PDF Plans? They are located in the store in the tab above, but you must be signed in to access that part of the site. It only takes a second to sign up!
  3. Like Us On Facebook!
    Hello Guest, it occurred to us during that last server failure that we had no way of informing the members of the site of the failure and I would like to invite you to like us on facebook so that you can get updates if the site happens to go down again. We don't post much over there unless we are updating the members so we will not flood your feed like some places do. Just click on Like and then allow notifications and that's it. See you there soon!

    Click Here To Rc-Help's Facebook page!
    Dismiss Notice
Dismiss Notice
Hey Guest, I see you are not signed up on our forum yet. Did you know Registration is FREE and is only a couple clicks away? You can even sign in from Facebook, Twitter or Google+ for your convenience! So what are you waiting for, CLICK HERE to join in on the conversation!

Batteries Battery Life

Discussion in 'Electronics' started by Capn Pete, Jan 24, 2019.

< Still Looking Around | Samething But Different...i Think >
  1. Capn Pete

    Capn Pete Active Member

    Blog Posts:
    0
    Joined:
    Oct 17, 2017
    Messages:
    126
    Likes Received:
    1
    Trophy Points:
    28
    Gender:
    Male
    Location:
    N. Carollina
    1. How important is it to discharge to storage level for LiPo's if they're not used right away?
    2. How long would you let them sit before doing this?
    3. Will they naturally discharge to a lower level?
    4. How far gone is a LiPo that has just a little swelling?
    5. Will it spontaneously catch fire?
    I have disposed of ones that have swollen up a lot.
    Thanks,
    Pete
     


  2. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    1. very important. They do not like being fully charged or over discharged. Reduced life will result.
    2. You can keep them charged for up to a week without any 'Major' damage, but no more than a couple of days is ideal.
    3. Yes, and this is a bad thing. This is due to the IR of the pack and the higher the IR, the faster they will self discharge. If you are noticing this, completely discharge the pack and toss it.
    4. A little swelling is not that big of a deal. Not in my opinion anyway. If a pack gets warm, it will slightly puff. Excessive puffing though, see #3...
    5. If you overheat a pack bad enough, have a crash or compress the cells so the two elements touch, they will catch fire. Slight puff I'm not worried about, but anything more and again, see #3.
     
  3. rdsok

    rdsok Well-Known Member

    Blog Posts:
    0
    Joined:
    Sep 11, 2011
    Messages:
    1,545
    Likes Received:
    59
    Trophy Points:
    48
    Location:
    Norman, Ok USA
    What Tony posted... applies to all RC craft, not just airplanes ( the forum area this is posted in )... should have probably posted in the forum electronics area.
     
  4. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    Moved into Electronics section under Batteries.
     
  5. murankar

    murankar Moderator Staff Member Armed Forces

    Blog Posts:
    9
    Joined:
    Dec 4, 2011
    Messages:
    8,906
    Likes Received:
    361
    Trophy Points:
    83
    Gender:
    Male
    Occupation:
    Soldier
    Location:
    Eastlake, Ohio
    All I know is that a fully charged 5000 mah pack stored at 70℉ for 1 year will loose 20% capacity. Which means a 5000 mah pack becomes a 4400 mah pack.

    There is so much that goes into pack care that it becomes a big ball of mess. RCHN covered over the importance of pack care. It was towards the end of the broadcast. In fact it was right around the time when Nick started the pack test/shootout with Dan.

    So its best to keep the internal heat to minimum during storage, ie refrigerator or freezer is ideal. If you plan on cycling the packs often, ie fly them then its not as important to keep them in the freezer. What ever you do, do not store them in your car during the summer. Unless you have a way to keep them cold.

    I am sure tony hit a the important parts already sink won't step on his toes.

    One thing in want to address that I don't think was: your resting pack voltage will fluctuate with temperature changes. That's the reason for 50% storage charge. If they get to cold your voltage will droop, if to hot the voltage will climb.
     
  6. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    Instead of getting in to dead nuts specifics, unless specifically asked, I try to keep it minimal and to the point.
     
  7. Capn Pete

    Capn Pete Active Member

    Blog Posts:
    0
    Joined:
    Oct 17, 2017
    Messages:
    126
    Likes Received:
    1
    Trophy Points:
    28
    Gender:
    Male
    Location:
    N. Carollina
    Thanks, Tony. I just hit the general button and posted. Didn't know people would get their knickers in a knot.
     
  8. Tony

    Tony Administrator Staff Member

    Blog Posts:
    14
    Joined:
    Feb 21, 2011
    Messages:
    35,813
    Likes Received:
    1,403
    Trophy Points:
    113
    It's no worries, I didn't even notice what area it was in but this is a great question that will definitely help others in the future. So I stuck it in the batteries section.
     
  9. rdsok

    rdsok Well-Known Member

    Blog Posts:
    0
    Joined:
    Sep 11, 2011
    Messages:
    1,545
    Likes Received:
    59
    Trophy Points:
    48
    Location:
    Norman, Ok USA
    "Suck it up buttercup" lol ( Tony quote from the "Off Topic Chit Chat" thread that just fit here )

    My knickers were not knotted... its just nice to keep things in the right category so others can find the info they are looking for... it's just an organizational thing so stuff can be easier to find...
     
< Still Looking Around | Samething But Different...i Think >

Share This Page