Re: Electric for large Planes

"Bob Cowell" <bobc@[EMAIL PROTECTED]
> wrote in message 
news:1t5h94p6bikcr70h798ulea2nln6tqdc22@[EMAIL PROTECTED]
> On Tue, 5 Aug 2008 12:08:28 -0400, "Ed Cregger" <ecregger@[EMAIL PROTECTED]
>

> wrote:
>
>>-----------
>>
>>All right, I'm cornfused.
>>
>>How do you charge a system like that, Jim? Do you unhook the parallel 
>>packs
>>and charge them with separate chargers? With Nicads that wouldn't be a 
>>good
>>idea.
>>
>>Ed Cregger
>
> I'm not Jim,  but I'll take a whack at this one
>
> On the original LiPoly assembled packs,  we just plugged them in and 
> charged
> them,  series, parallel,  no problem.
> BUT
> there were problems,
> eventually the cell voltages (state of charge) drifted enough that a
cell 
> might
> be ruined by over voltage or under voltage conditions even though the
pack 
> as an
> assembly seemed to be ok
>
> so most if not all of the newer packs come with two sets of leads 
> attached,
> One set is the power leads.
>
> the other set is attached so that there is a separate path for each 
> individual
> cell.
> this set is used either for charging or balancing the pack (depending on

> your
> charging / balancing equipment)
>
> There,  THAT ought to muddy the waters some ;-)
>
> bob

--------------

That makes perfect sense. Thanks.

Ed Cregger