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Li-Ion Batteries

 
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Old 06-23-2015, 03:15 PM   #1
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Li-Ion Batteries


I just got my new batteries for my proshot. The last ones sit in my shed for over a year and went kaput. Does storing them in the frig help anything?
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Old 06-23-2015, 03:51 PM   #2
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Re: Li-Ion Batteries


I have some M12 tools....that I hardly use.....propex, caulk adhesive.
I think it's good practice to cycle batteries, so I use them in a M12 sticklight and cycle the batteries at least once every 6 months....regardless if it's warranted to be used or not.

Heat kills batteries. How hot does the shed get.

Lastly, and maybe it's just me, and I'll have to read the wikipedia on batteries, but NIMH seem to not discharge as fast as LION

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Old 06-23-2015, 04:05 PM   #3
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Re: Li-Ion Batteries


Almost all chemical reactions go faster with higher temps, doubling in speed every 10C. The reactions proceed even while on the shelf.

Finding the truth about these particular batteries may be difficult.

I'd search using pdf as a search term and then wade through some long documents that were not written by marketing people.
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Old 06-23-2015, 05:31 PM   #4
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Re: Li-Ion Batteries


You probably will.....

I'd charge them up every month .
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Old 06-23-2015, 05:42 PM   #5
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Re: Li-Ion Batteries


LI tech is so strange, they want you to store them not "too cold" and not "too hot" but above 20% and below 80 percent charge.
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Old 06-23-2015, 05:56 PM   #6
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Re: Li-Ion Batteries


Chances are these developed internal shorts due to discharging too far. Charge periodically is the usual solution.
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Old 06-23-2015, 11:39 PM   #7
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Re: Li-Ion Batteries


40 degrees and 40% charge for absolutely longest life. 60 or 80% is not too bad, but full is.
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Old 06-23-2015, 11:40 PM   #8
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Re: Li-Ion Batteries


Self discharge is pretty slow but you probably want to give them a boost more than once per year.
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Old 06-23-2015, 11:42 PM   #9
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Re: Li-Ion Batteries


Quote:
Originally Posted by Golden view View Post
40 degrees and 40% charge for absolutely longest life. 60 or 80% is not too bad, but full is.
What's the average temp of a frig?
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Old 06-24-2015, 12:15 AM   #10
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Re: Li-Ion Batteries


37 degrees
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Old 06-24-2015, 12:22 AM   #11
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Re: Li-Ion Batteries


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37 degrees
So it would be safe to say keeping them in the frig would be a good idea?
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Old 06-24-2015, 12:48 AM   #12
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Re: Li-Ion Batteries


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So it would be safe to say keeping them in the frig would be a good idea?
Yes, unless the misses complains. Mine are now in the basement.
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Old 06-24-2015, 12:51 AM   #13
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Re: Li-Ion Batteries


Quote:
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Yes, unless the misses complains. Mine are now in the basement.
I own the garage frig.
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Old 06-24-2015, 04:39 PM   #14
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Re: Li-Ion Batteries


See pg. 13
http://www.dcrs.com/pics/db/document_library/000144.pdf
If the 10C rule applies you could buy many batteries on sale, freezer them until needed and get incredible shelf life.

Last edited by GettingBy; 06-24-2015 at 05:39 PM.
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Old 06-25-2015, 10:17 AM   #15
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Re: Li-Ion Batteries


So its good to freeze lithium ion batteries for storage??

And to store Nicads fully discharged?
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Old 06-25-2015, 02:19 PM   #16
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Re: Li-Ion Batteries


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Originally Posted by madmax718 View Post
So its good to freeze lithium ion batteries for storage??

And to store Nicads fully discharged?
No, but Lithium do self-discharge slower than NiMh batteries
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Old 06-25-2015, 04:32 PM   #17
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Re: Li-Ion Batteries


Switch to corded tools, problem solved.
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Old 06-25-2015, 06:03 PM   #18
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Re: Li-Ion Batteries


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So its good to freeze lithium ion batteries for storage??

And to store Nicads fully discharged?
Dunno at what temp the electrolyte in an Li battery freezes.
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Old 06-25-2015, 06:05 PM   #19
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Re: Li-Ion Batteries


Quote:
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Switch to corded tools, problem solved.
LOL. I used my M18 Fuel Grinder and I don't think I will ever grab my Metabo's unless I really need power......I did cycle through about eight 4ah batteries during the course of 4-5 hrs with some charging as well

Cordless is the future...
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Old 06-25-2015, 06:09 PM   #20
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Re: Li-Ion Batteries


Quote:
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Cordless is the future...
As long as we can find people willing to work with the toxic chemicals needed to build them.

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