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iCharger 206B Question

iCharger 206B Question

Old 03-26-2010, 11:09 AM
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We are using the iCharger 206B to charge our battery system for a hybrid electric car we are building. The manual for the battery says that it cna charge up to 8 LiPo batteries in series at one time. Would the system also be able to charge up to parallel sets of LiPos in series?



Thank You,
Mark
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Old 03-26-2010, 11:54 AM
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iCharger has a 206B and a 208B models. The 206B is 300watts and the 208B is 350watts. Where the 208B manual says "Lithium (LiPo/LiIo/LiFe) battery cell count: 1 8 series (In non-balance mode, expand LiFe to 10s)" - this means it will charge an 8S lipo battery, not 8 lipos in series. The 206B specifies only up to 6S lipo batteries, but similarly does not mean it charges 6 lipos in series. I think you have the models mixed up?

I'm confused by your ques - 'charge up to parallel sets of LiPos in series" - that makes no sense at all??


What are you asking??
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Old 03-26-2010, 02:36 PM
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You can charge 2 x 3s packs or 3 x 2s packs in series

As long as you have the correct charging / balancing cables you can charge multiple packs in parallel

There are some precuations when doing so

Packs need to be the same cell count and close to the same state of discharge

How quick they charge will be determined by the charging capacity of the charger versus the size of the packs

Cheers
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Old 03-26-2010, 02:38 PM
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Check out this link:

http://www.youtube.com/watch?v=NczQwVTI2bY
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Old 03-26-2010, 03:02 PM
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Hybrid electric car, charging 8 lipos in series, are you asking about a full size car? These are fairly powerful chargers for a RC, but not so much compared to full size car power requirements. If this is the case I know of some more appropriate chargers.
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Old 03-26-2010, 03:55 PM
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The 206B has no advertised series capabilities - it doesn't come with the same balance adapter boards that the 208B does which are set up for balancing multiple lipos. Those adapter boards are shown in teh 206B manual as optional, so it will do same thing within its 300 watt power limit, but you have to buy the adapter boards separately.

The 208B will also charge and balance up to two 4S batteries once in addition to the other listed above.".


If Mark is talking about a near full size 1:1, they are prob out of luck looking at a toy car lipo charger.....
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Old 03-26-2010, 05:00 PM
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Okay, sorry my question is probably not that clear, but I really appreciate everybody's help so far. I can't post a picture because I don't have enough posts yet but these two links show the schematics for what I am proposing to do.

Please tell me which of these (or if both) are feasible.

Battery Configuration 1:
http ://formulahybrid.files.wordpress.com/2010/03/charging-configuration-1.jpg

Battery Configuration 2:
ht tp://formulahybrid.files.wordpress.com/2010/03/charging-configuration-2.jpg

(Take the spaces out in the web address, had to do it so I could post the pictures.)


Thank you all for your time!!
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Old 03-26-2010, 05:36 PM
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Not sure the chargers would work wired up like your diagrams, would be a wiring nightmare with balance cables etc....

You could ask post your digrams in this thread where the designer / engineer who built the chargers posts

http://www.rcgroups.com/forums/showthread.php?t=839657


206b will only charge 5s packs @ 14.2 amps max (300w)

To use the charger to its full capabilities with batteries that size you would only be able to charge 3 of them at once

3 x 5000 mah 5s packs in parallel would take just over 1 hour to charge

6 packs of that size connected in parallel would take 2.1 hours or so


Something like the Cellpro Powerlab8 from fmadirect would enable you to charge

6 packs in parallel in around 1 hour, or 12 packs in parallel in 2 hours or so


You would need to take precautions with parallel charging as the packs need to be at a similar state of discharge when connected

Cheers

Last edited by crusey_aus; 03-26-2010 at 06:11 PM.
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Old 03-26-2010, 06:52 PM
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The only possibility is Config 1. Config 2 requires more voltage/number of cells than either the 206 or 208 can handle like crusey mentioned.

Either one implies floating outputs (not grounded) on the chargers, assuming they are connected at the same time as shown. Which I suspect they have, but am not at all sure…..use caution.

A lot of cells in there, I would think it would be very important to connect every cell for balancing, that’s a whole lotta wiring….yikes.

Suggest considering starting with larger cells, would make wiring so much easier. These are lithium based, but not lithium polymer. Slightly lower cell voltage, maybe add more in series to get the voltage back. Think it would be cheaper/no more expensive, but maybe not quite as light or compact (but counting wiring, maybe):

http://evcomponents.com/cscart/index...ategory_id=171

http://evcomponents.com/cscart/index...ategory_id=172

http://elitepowersolutions.com/produ...x.php?cPath=16

http://elitepowersolutions.com/produ...x.php?cPath=25


If you must have li-po, maybe this one, but not very high discharge rated (not completely clear if it's li-po or li-ion, I think it's li-po, maybe contact them and double check):

http://www.all-battery.com/polymerli...h95212223.aspx

Is this a SAE Formula project? Good Luck!

Last edited by Dave H; 03-26-2010 at 07:02 PM.
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Old 03-27-2010, 10:13 AM
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If I understand the question properly then the answer is:

any lipo charger can parallel charge any number of packs at a time.
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