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Author Topic: Lithipedia  (Read 1243 times)

Offline David Hoover

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Lithipedia
« on: October 26, 2013, 03:02:31 PM »
Have any of you been to this site?  http://www.lithipedia.org

They claim to be an independent organization dedicated to helping make the use of hobby lipos safer.  I'd be interested in hearing what the pros out there think of the tests they run and the results they get.

Life is simple. Eat. Sleep. Fly!
Best, Hoovie

Offline Dennis Adamisin

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Re: Lithipedia
« Reply #1 on: October 27, 2013, 11:42:20 AM »
David:
Good find!

Sounds like this COULD be a good resource for us, IF they can build a substantial database.  I'd say that is a daunting task given all the brands and sizes of packs available.

Did you look at their sample test results?  It looks like they are set up to to give good feedback on advertised ratings and battery cycle life.  Also noticed in their tests they charge at 1C (as I do, but that is conservative) - I think a lot of folks are charging at higher rates.  They also discharged to 2.8V per cell instead of the more usual (& conservative) 3.0V per cell...

Denny Adamisin
Fort Wayne, IN

As I've grown older, I've learned that pleasing everyone is impossible, but pissing everyone off is a piece of cake!

Offline David Hoover

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Re: Lithipedia
« Reply #2 on: October 27, 2013, 07:50:11 PM »
Yes I did, Dennis.  I found the graphs where they discharge at the published C rating particularly enlightening.
Life is simple. Eat. Sleep. Fly!
Best, Hoovie

Offline Dennis Adamisin

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Re: Lithipedia
« Reply #3 on: October 27, 2013, 09:16:02 PM »
Yes I did, Dennis.  I found the graphs where they discharge at the published C rating particularly enlightening.


YUP!
Denny Adamisin
Fort Wayne, IN

As I've grown older, I've learned that pleasing everyone is impossible, but pissing everyone off is a piece of cake!

Offline Andrew Borgogna

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Re: Lithipedia
« Reply #4 on: October 27, 2013, 11:50:49 PM »
Great find Dennis.  I spent some time reading the information and found that some of the stuff I have been doing, like storing the batteries in the fridge, are simply myths according to them.  I really like the voltage safety range they quote for best case life expectancy.  This definitely a site I will bookmark.
Andy
Andrew B. Borgogna

Offline linheart smith

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Re: Lithipedia
« Reply #5 on: October 28, 2013, 05:29:21 PM »
Dennis,

Discharging to 3.0 volts?  Is this A TYPO?

Linheart
linheart

Offline Dennis Adamisin

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Re: Lithipedia
« Reply #6 on: October 28, 2013, 06:16:18 PM »
Credit Dave for finding this site.

Lineheart: I thought that 3.0V was the bottom limit.  However in their tests the take them down to 2.8 for max discharge. 

In their FAQ they recommend peaking to 4.1V and setting cut off at 3.3V.  Also found that they have already accumulated a fair sized database of several brands.
Denny Adamisin
Fort Wayne, IN

As I've grown older, I've learned that pleasing everyone is impossible, but pissing everyone off is a piece of cake!

Offline Phil Krankowski

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Re: Lithipedia
« Reply #7 on: October 28, 2013, 07:42:14 PM »
I am wondering why they specify a CO2 extinguisher for fire, vs the more readily available dry chemical ABC and BC extinguishers.  I understand why not water, lithium is quite reactive to water. 

I would prefer to use a BC extinguisher on electrical, given the choice, because sodium bicarbonate does not fuse to the surfaces.  ABC extinguishers, monoammoium phosphate, tends to melt and fuse to everything rendering parts that could have been undamaged unusable. 

Phil


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