72v + users, do you use a pre-charge resistor?

Post by **Alan B** » Jun 13 2012 9:13pm

The high current is not good for the capacitors either.

GCinDC · Post by **GCinDC** » Jun 13 2012 9:57pm

from: http://www.rcgroups.com/forums/attachme ... id=1726156

GCinDC · Post by **GCinDC** » Jun 14 2012 9:35am

these are what i use @20s, fyi.

icecube57 · Post by **icecube57** » Jun 23 2012 9:21am

Im changing resistors.. they still gonna be 5w but im ditching the ceramic ones and getting the ones you have and making it similar to yours but instead of andersons I will use bullets...

Tommy L · Post by **Tommy L** » Jun 24 2012 6:42am

I use a 100watt light bulb

I plug my Negative leads together, then I put this light bulb in series with the Red + battery lead and Red + Main controller lead wire.
I wait 5 to 10 seconds and then quickly put my two Red+ together, removing the light bulb from the circuit.
Oh, the things we learn here on the ES Forum!

I'm running a 128v nom battery pack. This lights up, briefly!

Tommy L sends.... \\m//

sn0wchyld · Post by **sn0wchyld** » Jun 24 2012 8:55am

Tommy L wrote:I use a 100watt light bulb

I plug my Negative leads together, then I put this light bulb in series with the Red + battery lead and Red + Main controller lead wire.
I wait 5 to 10 seconds and then quickly put my two Red+ together, removing the light bulb from the circuit.
Oh, the things we learn here on the ES Forum! I'm running a 128v nom battery pack. This lights up, briefly!

Tommy L sends.... \\m//

not a bad idea. You could use a smaller, say 12 volt globe in series with another hunded-or-so resistor, for a easy way to know when things are charged, and that they're working each time you plug in!

Tommy L · Post by **Tommy L** » Jun 24 2012 1:50pm

sn0wchyld wrote:not a bad idea. You could use a smaller, say 12 volt globe in series with another hunded-or-so resistor, for a easy way to know when things are charged, and that they're working each time you plug in!

Great Idea!

Tommy L sends.... \\m//

nechaus · Post by **nechaus** » Jun 26 2012 7:33pm

GCinDC wrote:
from: http://www.rcgroups.com/forums/attachme ... id=1726156

i do it this way, or do it with the contactor

John Bozi · Post by **John Bozi** » Mar 23 2014 10:58pm

Would it work temporarily to just plug in a 6s battery first, unplug and then plug in the rest of the batteries. My controller seems to spark very little the first few times I used them, got worse though...

I got to get to the shops to buy all the resistors etc.

TMaster · Post by **TMaster** » Mar 24 2014 1:29pm

All I use is a crystalyte 40A key switch with 12AWG modified wires. I've been pumping peaks of over 100A through it for the last 3 years. All I have between the battery and the controller is this switch. 0 problems. no sparks, nothing.

Endless Sphere

72v + users, do you use a pre-charge resistor?

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Re: 72v + users, do you use a pre-charge resistor?

Re: 72v + users, do you use a pre-charge resistor?

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Re: 72v + users, do you use a pre-charge resistor?

Re: 72v + users, do you use a pre-charge resistor?

Re: 72v + users, do you use a pre-charge resistor?

Re: 72v + users, do you use a pre-charge resistor?

Re: 72v + users, do you use a pre-charge resistor?