Weak 3S 10C 1250mAh packs?  
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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> Common Sense RC Support >> Weak 3S 10C 1250mAh packs?
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Weak 3S 10C 1250mAh packs? - 2/9/2007 1:12:00 AM   
wpifarmer


 

Posts: 7
Joined: 8/19/2005
From: Nashua, NH, USA
Status: offline 		Hey Gang,

I've got a pair of CSRC LiPos that I've had for about a year. They each have about 40-50 charges on them. They are 3S 1250mAh 10C. I understand these are not super high performance packs, but I am not getting the performance out of them that I have been hoping.

So I decided to take a fully charged Lipo and run it on my eagletree systems power thingy, and then run a newer Polyquest 20C 1500mAh pack.

Attached is the graph. You can see that the CSRC pack really sags hard even though I'm only running at it's continuously rated discharge. The Polyquest pack holds 1V more, but the result is 40% more power delivered and MUCH more pull at the prop. According to the ratings, the CSRC pack should be able to drive up to 18A for 5 seconds at a time.

I've attached my data. The first burst is the CSRC pack, and the second is the polyquest burst. The gray bar indicates a new battery insertion. Also attached is CSRC data for my battery from their web site.



So, my question, how long should a LiPo last? Are my packs fading prematurely?

Thanks,
Farmer

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RE: Weak 3S 10C 1250mAh packs? - 2/27/2007 5:37:04 PM   
Tram



Posts: 562
Joined: 9/5/2004
From: Florence, AL, USA
Status: offline 		Pack life is often determined by how it is treated..

Has the pack been treated well? If they are abused - IE pushed too hard, the pack will not last as long..

Jeff
www.CommonSenseRC.com

_____________________________

Jeff Williams
www.CommonSenseRC.com

(in reply to wpifarmer)
       Post #: 2

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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> Common Sense RC Support >> Weak 3S 10C 1250mAh packs?
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