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Old Jan 24, 2013, 07:09 PM
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ggcrandall1's Avatar
USA, GA, Marietta
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That appears to be a parallel setup you have. As such all cells are automatically balanced.

Glen
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Old Jan 25, 2013, 10:56 AM
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taz007's Avatar
United Kingdom, Higham
Joined Jul 2011
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Quote:
Originally Posted by ggcrandall1 View Post
That appears to be a parallel setup you have. As such all cells are automatically balanced.

Glen
Thanks Glen.
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Old Jan 25, 2013, 11:21 AM
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Barbados
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Once hooked to the charge cable the current flows from one batt to the other until all are equal voltage,there's no balancing for single cell batt.
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Old Jan 25, 2013, 07:56 PM
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United Kingdom, Higham
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so would this work if i hooked up 2 - 3 cell 2200 mAh, charge 3 cell @4400 ??? via a parallel cable (2 male XT60 to 1 female XT60 )
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Old Jan 26, 2013, 02:53 AM
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USA, GA, Marietta
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Would you please read this: https://sites.google.com/site/tjingu...arging-how-tos

It will give you a better understanding of the overall picture of electrics. And it will answer most of your questions.

Glen
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Old Jan 27, 2013, 12:18 AM
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Australia, TAS, East Launceston
Joined Aug 2010
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Quote:
Originally Posted by mrforsyth View Post
Longer flights ≠ last longer.

The reason that a lower charge rate results in a longer flight is that you achieve a more complete charge. More complete charge has been empirically demonstrated to result in fewer usable cycles than charging to a lower termination voltage. As such, lower charge rate can result in lower battery life (# of useful cycles).

Mark
Mrforsyth my charger like most modern chargers holds a constant voltage and lowers the current to about 0.2A at the completion of the charge cycle. So regardless of the set charge current the final step of the charge is always the same. I do not expect I am getting a difference of charging capacity by altering the set current. There for by this reasoning I should be able to charge at maximum capacity with no impact to cell life?
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Old Jan 27, 2013, 02:13 AM
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All of my chargers terminate when CV current is 1/10th of initial CC current. Consequently, when charging at 10A, charge will terminate when CV current hits 1.0A. Similarly, when charging at 1A, charge will terminate when CV current hits .1A. The 1A charge thus results higher per cell voltage at end of charge cycle than when charging at 10A.

What charger are you using? If it indeed terminates when CV current is .2A regardless of initial CC current, then yes, charge capacity should be effectively identical.

Mark
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Old Jan 27, 2013, 04:06 AM
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Australia, TAS, East Launceston
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I am using a turnigy 150watt charger. I have not played around with it enough to see if the cut off is different at different charge currents.

I am trying to find out the best charge rate for my 2200mah nanotech packs without affecting life span too much.
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Old Jan 27, 2013, 09:38 AM
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The Netherlands, NB, Heusden Gem Heusden
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I see a lot of people using paralell charging for single cell lipos but I wonder how safe it is, in other words what will the current be when you hook up 2 fully charged 260 mAh nanotechs (4.2 V) to 2 'empty' 260 mAh nanotechs (3.5 V), will it exceed the maximum charge C or even discharge C in a worst case scenario?
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