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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> MaxAmps Support >> charging/balancing two 2s packs
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charging/balancing two 2s packs - 11/17/2007 3:57:15 AM   
PedeBeater



Posts: 1761
Joined: 12/28/2005
From: Oshkosh, WI, USA
Status: offline 		I plan on getting two maxamps 7.4v 5000HV packs. From my understanding this setup will charge and balance two 2s packs at the same time. I will just need a y-harness.

http://www.boomboombatteries.com/product_p/lba10.htm (2x)
http://www.boomboombatteries.com/product_p/eos_5i_ac.htm
http://www.maxamps.com/Lipo-5000-74-Pack.htm (2x)

I also have a Low voltage cut-off question. If I am running these two packs in parallel what should be my low voltage cut-off be set at? My understanding is 3v per cell, so it would have to be set at 12v right?

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RE: charging/balancing two 2s packs - 11/17/2007 10:32:58 PM   
JAM MaxAmps



Posts: 357
Joined: 1/2/2007
From: Alexandria, MN, USA
Status: offline 		if you run to 7.4 volt packs in parallel your still at 7.2 volts but with 10000mAh instead of 5000. You run them in series to get 14.4 volts. And your lvc should then be set at 12.4 to be on the safe side of 12. If you buy this http://www.maxamps.com/Eos6i-AC-DC.htm you can have on unit that you can charge both packs with at the same time as a 4s pack. And the balancer is built into it you can choose to by pass the balancer or not.

Jason


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Jason
MaxAmps Marketing Manager/Tech Support

(in reply to PedeBeater)
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RE: charging/balancing two 2s packs - 11/18/2007 3:14:19 AM   
PedeBeater



Posts: 1761
Joined: 12/28/2005
From: Oshkosh, WI, USA
Status: offline 		Thank you. Since I posted this thread I learned a lot more and changed my game plan. Just like you linked, I will be using the 0606i ac/dc charger. I will need a y-harness for the deans I will be using and some kind of harness for the balancing tabs. Is it possable for you to make a harness for the balancing tabs? So I can hook up two 2s packs to one balancing port?

But if i only charge them to 14.4volts, and the cut-off is set at 12.4volts, that would not leave me with much run time. Correct?

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Beer, it''s cheaper than therapy.

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RE: charging/balancing two 2s packs - 11/19/2007 12:51:53 AM   
JAM MaxAmps



Posts: 357
Joined: 1/2/2007
From: Alexandria, MN, USA
Status: offline 		Run time isn't based off of the voltage it based off of the mAh's. And I'm going to check with the guys in the morning about the y-harness balance adapter.

Jason


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Jason
MaxAmps Marketing Manager/Tech Support

(in reply to PedeBeater)
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RE: charging/balancing two 2s packs - 11/26/2007 11:04:14 AM   
avionics



Posts: 65
Joined: 4/2/2005
From: Dubai, UNITED ARAB EMIRATES
Status: offline 		I want to conncet two 5000mah, 18.5 Volts 25C batteries in series. I have searched the web but could not find electrical specifications on the plugs i.e deans plugs in order to find what type of plugs i could use to with stand the instantanous current of up to 125 A. and the wires. if any one knowsplease let me know.

Regards

Reza

(in reply to JAM MaxAmps)
       Post #: 5

RE: charging/balancing two 2s packs - 11/26/2007 2:12:20 PM   
JAM MaxAmps



Posts: 357
Joined: 1/2/2007
From: Alexandria, MN, USA
Status: offline 		Try Anderson Power Poles. I think they are rated for a higher amp draw.

Jason


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Jason
MaxAmps Marketing Manager/Tech Support

(in reply to avionics)
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RE: charging/balancing two 2s packs - 11/26/2007 5:18:32 PM   
avionics



Posts: 65
Joined: 4/2/2005
From: Dubai, UNITED ARAB EMIRATES
Status: offline
quote:

ORIGINAL: JAM MaxAmps

Try Anderson Power Poles. I think they are rated for a higher amp draw.

Jason

Thanks Jason Iam going through the site.
Cheers

Reza

(in reply to JAM MaxAmps)
       Post #: 7

RE: charging/balancing two 2s packs - 3/18/2008 12:00:13 AM   
ambravo


 

Posts: 14
Joined: 12/30/2007
From: sayville, NY, USA
Status: offline 		Jason, I need detailed instructions for charging two 7.4v 800mah batteries at the same time with my Hyperion 606i. Any help would be appreciated.
Thanks,
Angel

(in reply to JAM MaxAmps)
       Post #: 8

RE: charging/balancing two 2s packs - 3/18/2008 1:12:44 AM   
JAM MaxAmps



Posts: 357
Joined: 1/2/2007
From: Alexandria, MN, USA
Status: offline 		it easy you get a series connector and charge them as a 4 cell 800 mAH pack but you will need to make something like this two balance them at the same time: http://www.nitrokillers.com/showthread.php?t=699.

Jason


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Jason
MaxAmps Marketing Manager/Tech Support

(in reply to ambravo)
       Post #: 9

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