[NSRCA-discussion] TP 53005SPL2

[James Oddino]

Bill, I believe each 5s2p pack is wired such that it looks like a  
5s1p.  It is made up of five sets of two cells wired in parallel so  
each of these 2s "cells" is now a 5200 mah "cell'.  Therefore, the  
existing balance plugs are all you need.  Hope this is clear.

Jim


On Jun 5, 2009, at 4:44 PM, Bill's Email wrote:

> Yep, I was talking about a full 10S in the plane. Two 5S2P packs in  
> series, did not make that very clear did I?? 10 cells per pack, 20  
> cells total on board.
>
> I spoke with a pretty large reseller of TP products and he is the  
> one who told me that TP is not warm and fuzzy on this pack. He said  
> they have warranty concerns. Frankly I wish there was a separate  
> balance tap for each of the 5S packs in each one. As it is you are  
> balancing cells in parallel, not the best method.
>
> The 2600 cells that they make these up from are very scarce right  
> now and on backorder for TP. I've been waiting about a month for the  
> two packs I just got.
>
>
>
>
> Chad Northeast wrote:
>> Bill
>> That is not correct, there are only 10 cells in those packs, made  
>> of 2600 PL2 cells.  Essentially two 5s 2600 packs in parallel.
>>
>> I have a hard time believing that TP will stop making this pack,  
>> they have made far more complicated packs in the past.  These packs  
>> are made to order which makes them usually not a stock item.  I  
>> will confirm this with TP though.  They have been around for nearly  
>> a year now (I am still flying the first two of 4 sets produced), so  
>> I don't see why they would stop now.
>>
>> Chad
>>
>> Bill's Email wrote:
>>>>
>>>> ------------------------------------------------------------------------
>>> It is in fact a 5S2P arrangement. Two 5S 2600 mAh packs in  
>>> parallel plus two other packs in parallel and those two in series  
>>> with each other.  A total of 4 5S packs in there. THis is why this  
>>> pack performs so well under load. Each of the two parallel packs  
>>> in each set only sees half the load and consequently it has less  
>>> voltage drop under load.
>>>
>>> TP does not like making this arrangement and I understand that  
>>> they may stop very soon.
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
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>>
>
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