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Old 01-09-2014, 04:18 PM   #586
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I'd be lying if I tried to provide any explanation. Sorry I can't be more informative.
That's fair, thanks for the reply.
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Old 01-10-2014, 05:57 AM   #587
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Originally Posted by JiuHaWong View Post
How fast does that unit take to discharge a battery? And can it handle a fully charged lipo?
It does a 1S pack at the full 45 amps and a 2S pack at 35 amps. It will discharge a full pack no problem at all. Takes about 10 minutes or so depending on the mah of the packs. 1S is a little quicker due to the higher rate.

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Old 01-10-2014, 09:19 AM   #588
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EA- I can't find the unit you're using. Do you have a link?
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Old 01-10-2014, 10:49 AM   #589
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http://www.racersmeasurementsystems....r-Dumper-W.htm

Could be this?
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Old 01-10-2014, 10:57 AM   #590
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Looks right, thanks. They have several nice toys I could use.
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Old 01-10-2014, 11:01 AM   #591
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ICharger
308DUO or 4010DUO
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Old 01-10-2014, 02:13 PM   #592
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Looks right, thanks. They have several nice toys I could use.
Yep thats it! The resistance and rotor meter are the best on the market besides super expensive lab equipment.

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Old 01-10-2014, 03:35 PM   #593
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I was wondering why everyone is using external dumpers?
Are you just trying to avoiding putting heat in the charger?
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Old 01-10-2014, 04:39 PM   #594
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I am OK with discharging at 6 or so amps but I get it, after a race day getting home at 10 or later being able to discharge to storage voltage quickly would be nice.
It doesn't take hours but it takes 10 -15 minutes per pack to get to storage if their still full so I may be 45 to 60 minutes till I can crash out.

I don't like leaving packs outside of storage voltage for long so most of the time I put them on storage when I get home..
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Old 01-10-2014, 05:15 PM   #595
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Ok so I purchased an iCharger 206b. It charges great at 20a, but discharge is another story. I set it on 20a, but it wont go past 1.8 while actaully discharging. Has anyone else ran into this kind of issue?
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Old 01-10-2014, 05:18 PM   #596
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Try it on a fully (or close) charged pack. You may have been close to storage voltage already so it didn't get to a high amperage discharge rate.

With my PowerLab even if I set it to 10a I will only see 6 or so amps when just using the charger itself. To get more than that I would need to hook up to a car battery for a regenerative discharge.
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Old 01-10-2014, 05:40 PM   #597
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Ok so I purchased an iCharger 206b. It charges great at 20a, but discharge is another story. I set it on 20a, but it wont go past 1.8 while actaully discharging. Has anyone else ran into this kind of issue?
The 206B is limited to 20 watts of discharge power on it's own. Need to set up a regenerative or external discharge to get any higher.
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Old 01-10-2014, 05:46 PM   #598
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What is a regenerative discharge?
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Old 01-10-2014, 05:50 PM   #599
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Regenerative is when you use a large enough not fully charged lead acid (auto) battery (or multiples) for the power source, and the charger basically runs in reverse, discharges the RC battery into the lead acid(s). 206B can go to 300 watts that way.

External uses a properly sized external resistor bank, maybe a light bulb setup, etc, to dissipate the energy. Can get to 500W.
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Old 01-10-2014, 06:01 PM   #600
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What is a typical storage voltage for a Lipo?
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