20c lipo compared to nimh battery?  
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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> 20c lipo compared to nimh battery?
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20c lipo compared to nimh battery? - 6/26/2009 2:00 PM   
RCspeeder


 

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Status: offline 		How would a 5000mah 20c 7.4v lipo compare to a 5000mah 8.4v 7 cell nimh battery compare as far as performance and run time?

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RE: 20c lipo compared to nimh battery? - 6/26/2009 6:17 PM   
RCspeeder


 

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RE: 20c lipo compared to nimh battery? - 6/26/2009 9:57 PM   
SacramentoJoe



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Status: offline 		What C rating for the NiMH? That Lipo would be rated for 100 amps which would certainly give you great punch off the line, that would be important for a brushless setup. Theoretically, they would give you the similar run times and I think they would be discharging at similiar voltages (~8volt?) during discharge.

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RE: 20c lipo compared to nimh battery? - 6/26/2009 10:17 PM   
RCspeeder


 

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Status: offline 		I dont know the c rating of the nimh, that is why I ask. It is a 8.4v 7 cell 5000mah venom nimh battery. It wont be going into a brushless set-up, its going in a brushed e-revo with a 700 H.O Kershaw motor. I will have a voltage cut off in it also.

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RE: 20c lipo compared to nimh battery? - 6/27/2009 5:39 PM   
Rodney



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Status: offline 		Different brands of NiMh batteries can be different. It depends on the internal structure and the internal impedance of the battery. In general, NiMh have a higher internal resistance than NiCad. I'm not sure but I think in general LiPo's also have a higher internal impedance than NiCad's do. Anybody know for sure?. It is really the internal impedance of the battery that determines the maximum current you can safely draw.

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RE: 20c lipo compared to nimh battery? - 6/27/2009 6:09 PM   
RCspeeder


 

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Status: offline 		My question is will a zippy 5000mah 20c lipo give more power, punch, and last longer than a 8.4v 5000mah 7 cell nimh venom battery?

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RE: 20c lipo compared to nimh battery? - 6/27/2009 8:04 PM   
kahnen



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quote:

ORIGINAL: RCspeeder

My question is will a zippy 5000mah 20c lipo give more power, punch, and last longer than a 8.4v 5000mah 7 cell nimh venom battery?


I assume the lipo your asking about is a 2s lipo, since that is about the same as a 7 cell nimh. If thats correct, then the lipo's power, punch and runtime will be better than a Venom nihm battery. BTW Venom nihms are notorious for being crappy batteries. If the nimh battery were a more reputable battery the runtime and power would be closer to the lipo.

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RE: 20c lipo compared to nimh battery? - 6/29/2009 5:23 PM   
SacramentoJoe



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Status: offline 		Venoms aren't the best. Zippys aren't the best either. Yet, I think the Zippy will perform better and definitely give you more off-the-line punch.

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RE: 20c lipo compared to nimh battery? - 6/29/2009 5:50 PM   
RCspeeder


 

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Status: offline 		I think Im going to give them a try. I'll let yall know how it works out.

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