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Other › Charge Rate for TP LiPo's?
12-01-2005 03:04 AM  12 years agoPost 21
AnnihilaT

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The Netherlands

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Just thought i would share this since it IS on topic:
Charging at less 1C really doesn't do anything to extend the life. Keeping the cells balanced is far more important.

Thunder Power is finally releasing the new 10-cell charger and balancer next week. One of the new functions it will have is the ability to charge at a 2C and even a 3C rate. Charlie has done extensive tests in the last 3 months, and even at 3C it doesn't seem to affect the longevity of the cells.

-- Gary
This is coming from Gary Goodrum from tppacks.com. I would consider him a reputable source of information. When he mentions "Charlie" - he is speaking of Charlie Wang who heads Thunder Power. I would also consider him a pretty reputable source of information.

Anyone disagree?






A day without sunshine is like, well, night.

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12-01-2005 03:49 AM  12 years agoPost 22
nojohnny101

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10 miles north of Cincy, OHIO

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hey
looks good to me....thanks for looking that up...

i'll have to look into that more but very interesting indeed

thanks for sharing!

Thanks
~WIll~

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12-01-2005 12:09 PM  12 years agoPost 23
cdyckes

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Nr. Yeovil, Somerset - UK

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I always charge current technology cells at 1C.

If newer cells will take 2C or 3C then we'll need fewer of them as field recharging will make sense

The newest Kokam's already claim to support 3C charging giving 90% charge in 20 minutes!!!

Colin

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12-01-2005 12:20 PM  12 years agoPost 24
AnnihilaT

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The Netherlands

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Colin,

From what i understand (coming from charlie and gary @ TP) their new charger will charge any of the current breed of cells at 2 and 3C rates. That sound possible to you?

[Edit] I take that back... It should be able to charge the newest pro-lites at 2 and 3 c rates which is what they have been testing on.





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12-01-2005 01:04 PM  12 years agoPost 25
cdyckes

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Nr. Yeovil, Somerset - UK

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Anni,

As you say in your edit, almost certainly only new generation cells will be fast chargeable.

Wouldn't like to try it on the older ones!

Colin

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12-01-2005 01:33 PM  12 years agoPost 26
AnnihilaT

rrKey Veteran

The Netherlands

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Person,

Have you been doing this personally? And if so at what rate and how many cycles would you say you have done this. Manufactures always state LOWER limits than the actual limits to protect themselves and the consumer. Not higher so that people will damage their cells and buy more as someone earlier was so wise to point out (ridiculous comment btw).

Anyway let me know details, Person. Im curious how its working out for you.





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12-01-2005 05:53 PM  12 years agoPost 27
Ozydego

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Westerville, Ohio

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I own a fairly cheap Lipo charger (celectra) that only has charging rates of .25, .5, 1.0, 1.5, and 2.0 amp rates. This means that my TP 2100's are charging below 1C. This is fine, but I charged my old TP1350 at 1.5 amps... with no problems... heating swelling, etc for about 40 cycles...... I also use a small 100mah lipo for light setups on my heli, and charge it at .5 amps, with no problems with heat or swelling as well.... These are just my personal experiences, take them for what you will... These aren't nearly charge rates of 2C, but they are definitely over the manufacter's stated limits.....

But Honey, I can't live with just stock.....

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12-03-2005 03:35 AM  12 years agoPost 28
Kevino_heli_man

rrApprentice

Valencia, CA United States

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Speaking of extending the life cycles of your Lipo's, has anyone here heard of refrigerating your packs after you charge them? I read in a post that if your leave your Lipos out at room temperature for an extened period of time your packs will lose some of there compacity, but if you refrigerate your lipos it will prevent this. Has anyone else heard this?

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12-03-2005 04:59 AM  12 years agoPost 29
Rum95

rrApprentice

Puerto Rico

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My charger has an auto setting and it determines the safest amp charge. For packs 1600mAh it charges at .3A and for 2100mAh .4A. I doubt that the charger chooses these value just to piss me off. I think the slower charge keeps it balanced and prolongs the life of the pack.

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12-03-2005 06:34 AM  12 years agoPost 30
nojohnny101

rrElite Veteran

10 miles north of Cincy, OHIO

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hey
Speaking of extending the life cycles of your Lipo's, has anyone here heard of refrigerating your packs after you charge them? I read in a post that if your leave your Lipos out at room temperature for an extened period of time your packs will lose some of there compacity, but if you refrigerate your lipos it will prevent this. Has anyone else heard this?
check this site out....very good info: http://www.batteryuniversity.com/

specifically this URL: http://www.batteryuniversity.com/partone-19.htm


Thanks
~Will~

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