Checking some old 18650 to see how badly they have degraded ..

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old4570
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Checking some old 18650 to see how badly they have degraded ..

 

Ultrafire Grey 2400 Protected from DX  purchased March-2009  

Doing a 1A discharge I got 1467mAh 

 

Trustfire Grey 2400, unprotected from DX , purchased Feb 2009 

Doing a 1A discharge I got 1488mAh 

 

Ultrafire Red [ candy ] Protected 2600 , ?? almost 2 year old , 1670mAh @ 1A 

Ultrafire Green [ candy ] non protected 2600 , same age as red 2600 = 1997mAh @ 1A

Eagletac , same age as above , 1903 mAh 

Generic 2200mAh [ Came with L2's ] 1507mAh 

AW2600 , 2415mAh  [ about 2 years old ] 

WOW18650 [ about 1.5years old ] 2454mAh 

Trustfire Flame 18650 1 year 1month old = 1682mAh 

Xtar 18700 [ 2200 ] 8 months old 2100mAh 

Fireworm 3000 [ non protected ] Same age as Trustfire flame = 2042mAh 

 

All @ 1A discharge 

Updated :

 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Edited by: old4570 on 09/04/2011 - 06:41
Davx
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Really interesting.. It would be curious to check also not cheap battery to see if they degrade like budget cells or if the superior quality means also less degradation.

"There are always new jobs, women, and apartments......there is only ONE BLF." - Chicago X (27/03/2012)

old4570
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I have a AW 2600 which I will run next , but 2.26AM ATM , time for bed 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

how2
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I heard that the maximum life of these batteries are 5 years in the real world.

fishinfool
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Very interesting.  Thanks old!

 

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

old4570
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About 2 year old AW2600 ... 1A discharge = 2415mAh ...  Thats not bad at all ... 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Hikelite
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Thanks for the results!

Impressive AW2600. Have you used it often?

old4570
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Hikelite wrote:

Thanks for the results!

Impressive AW2600. Have you used it often?

I got the AW to compare to , so its had a very easy life , had no use but testing ..  

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Hikelite
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old4570 wrote:

Hikelite wrote:

Thanks for the results!

Impressive AW2600. Have you used it often?

I got the AW to compare to , so its had a very easy life , had no use but testing ..  

Ohh, I see.

Have you kept it in a cold place, fridge?

 

xxllmm4
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Thanks for testing them old4570, I pretty much had the same results with my Ultrafire 3000's they where around 2200 when new and only a year later they where down to about 1500. They only had about 4-5 cycles on them and where stored at 3.7-3.8v.

I have herd quite a few people complain about the same thing with the Chinese based cells. It's going to be interesting to see how the Hi-Max holds up.

scheven_architect
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Would storage in the fridge be a wise idea?

If i don't use the flashlights for a while should i turn them on until the batteries are discharged to around 40% and then get them out?

 

greetings!

 

 
old4570
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Hikelite wrote:

old4570 wrote:

Hikelite wrote:

Thanks for the results!

Impressive AW2600. Have you used it often?

I got the AW to compare to , so its had a very easy life , had no use but testing ..  

Ohh, I see.

Have you kept it in a cold place, fridge?

 

No , toolbox in my room ... same as all the other cells 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

old4570
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scheven_architect wrote:

Would storage in the fridge be a wise idea?

If i don't use the flashlights for a while should i turn them on until the batteries are discharged to around 40% and then get them out?

 

greetings!

If you wanted too .... Just dont freeze them 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

old4570
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xxllmm4 wrote:

Thanks for testing them old4570, I pretty much had the same results with my Ultrafire 3000's they where around 2200 when new and only a year later they where down to about 1500. They only had about 4-5 cycles on them and where stored at 3.7-3.8v.

I have herd quite a few people complain about the same thing with the Chinese based cells. It's going to be interesting to see how the Hi-Max holds up.

Hmmm , is that Wow 18650 almost a year old ?  ... Just checked , the Wow should be more than 12 months old maybe 18months ??  

Will have to find some time to discharge it ... 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Hacken
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my 3yr old AW2200 is still at 4.1volt discharge so i dont know how many mAh it still has left..

hazna
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it's interesting seeing the long term results of these batteries.  However since they've been through different usage patterns it's hard to compare them definitively.  The main thing I gather from your data, is that out of the AW and eagletac 18650 (both of which have had little useage), the AW has performed better. 

Some of the data from cpf, also suggest that the older AW perform better than older ultrafire li-ions.

A blog on keychain gadgets, pocket tools and more:

http://keychainpockets.blogspot.com/

xxllmm4
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I would love to see how the WOW has held up. 

As far as I know they are a Chinese based cell. I opened one up and found no markings. I also tried shorting one out and it got to about 160F but never leaked.

old4570
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Thanks , need to discharge the WOW18650 ...

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

vinhnguyen54
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What charger do you use to do the discharge test OLD4570? Thanks!

old4570
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The cheap old Imax B6 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

vinhnguyen54
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Do you know what charger I should buy? I want to get one to test the capacities of my old 18650.

old4570
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2454mAh Capacity for my WOW18650 @ 1A discharge ,,  

 

What hobby charger to get ?  For discharging up to 1A , the Imax B6 is fine + Cheap as chips on Ebay ..

If you wish to discharge up to 5A [ Amp ] , price entry point is about $70 something Dollars . 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

old4570
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Updated with some more cells tested today ... 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

old4570
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Updated with Fireworm 3000 result , discharged @ 1A 

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….