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Old 12-07-2013, 06:24 PM   #1
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which connector to use

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I m going with a 6s 5000 battery set up in my new plane and was wondering if the EC3 connector will work or what should be used.Thanks Ross
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Old 12-07-2013, 08:22 PM   #2
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Re: which connector to use

Ross, what determines connector requirements is the amperage that you will draw through it. Just knowing the battery is not enough. That being said, I doubt you would be hauling the weight of a 6S if you weren't pulling a load greater than EC3 should carry. Remember that it's not just a safety or failure question. Resistance wastes available power. My bet is that you will need EC5 but check your current against the various connector stats.

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Old 12-08-2013, 08:54 AM   #3
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Re: which connector to use

The EC3 teminals probably won't accept the wire from that size battery... Don't make the leads 'fit' by trimming them. You also need some room for the solder to get in to bond the write to the meets of the terminal.
+1 for the EC5
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Old 12-08-2013, 10:10 AM   #4
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Re: which connector to use

The EC 5 is rated for up to 120amps where as the EC3 is rated for up to a max of 70 amps. what size ESC are you running and what is the max continuous watts and amps on the motor you are installing. Your connectors should not be a point of resistance in the circuit. They should be able to handle the max current that is possible with the setup. Take care
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Old 12-08-2013, 07:26 PM   #5
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Re: which connector to use

I have EC3's on a 6s 1/4 scale RV4. rimfire 120, nothing gets hot ,Don't fly full throttle much.
My 60 E beast on 6S uses the EC5's, hard 3d flying much higher amps.
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Old 12-09-2013, 10:57 AM   #6
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Re: which connector to use

Originally Posted by frenzy View Post
I m going with a 6s 5000 battery set up in my new plane and was wondering if the EC3 connector will work or what should be used.Thanks Ross
I would ask:

What connector does the battery already come with?

I know the large HK batteries come with 4mm male/female battery connectors. If your batteries already come with connectors on them, why not just use those??

These are the 4mm bullets that already come with HK batteries;

Here are the bullets:

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