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13btoyrota
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07.28.2009, 10:38 AM

I tryed a simmiler thing with my 1/8 buggy with a 2075kv motor and a hobbywing 150amp esc and 2 3200mah 2s 25c batterys in series at 14v just for a practice and cooked and swelled one of them and they were both very hot. The amp output is only 80amps at 3200mah and 25c and depending on your system it may not be enough and will get your batterys quite hot as mine did. so just be carefull.
   
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zeropointbug
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07.28.2009, 11:35 AM

I agree, you should go with 4-5k-mah on 4s... but seeing as you have a TP 40C 5000mah, and your mains are only 10 mins long, I would hardly worry about anything. If your mains were longer yes, for instance, I have 30 min mains at my local track, I use 6s 4200mah packs, and swap out at 15 mins, each pack has 20+ mins of runtime though, provides peace of mind.

You COULD use 3200mah 4s pack, but it would have to be a high end pack, such as a TP, Hyp G3, Neu 35C+, etc.


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07.28.2009, 07:50 PM

Quote:
Originally Posted by zeropointbug View Post
I agree, you should go with 4-5k-mah on 4s... but seeing as you have a TP 40C 5000mah, and your mains are only 10 mins long, I would hardly worry about anything. If your mains were longer yes, for instance, I have 30 min mains at my local track, I use 6s 4200mah packs, and swap out at 15 mins, each pack has 20+ mins of runtime though, provides peace of mind.

You COULD use 3200mah 4s pack, but it would have to be a high end pack, such as a TP, Hyp G3, Neu 35C+, etc.

ah. I have an SMC 40c 4S 5000mAh, but interestingly enough, my motor gets a bit warm with it.

am I being too heavy on the trigger? perhaps.


the pack I saw was a PolyQuest 4S, 25c I tink.
   
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07.28.2009, 07:47 PM

Quote:
Originally Posted by 13btoyrota View Post
I tryed a simmiler thing with my 1/8 buggy with a 2075kv motor and a hobbywing 150amp esc and 2 3200mah 2s 25c batterys in series at 14v just for a practice and cooked and swelled one of them and they were both very hot. The amp output is only 80amps at 3200mah and 25c and depending on your system it may not be enough and will get your batterys quite hot as mine did. so just be carefull.

aha...so I see. I think.

so it appears that the 160amps (combined total, right?) that setup was putting out was not enough?
   
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