NMP 7.4v 2Amp Battery Packs

[JOddino]

Dieter,
You can charge this pack with any good Li-Ion charger.  Limit the charge
current to 2 Amps and make sure the voltage doesn't exceed 8.4 volts.  One
advantage of the NMP charger is you can watch the progress of the charge
process.  After using it you will know fairly well what the state of charge
is by reading the charge current.  So it could serve as a battery tester
also.
This size pack is more than adequate in a pattern plane.  I've been running
them for two years.  Servos have a peak current of over 2 Amps for a few
milliseconds when they start but the current quickly drops once the servo
starts moving.   However, if your servos are buzzing they are continuously
starting and stopping and the current can be quite high.
Jim
----- Original Message ----- 
From: "Dieter Rozek" <rozekd at earthlink.net>
To: <discussion at nsrca.org>
Sent: Tuesday, August 24, 2004 10:17 PM
Subject: NMP 7.4v 2Amp Battery Packs


> I just purchase these battery packs and according to the included
> instructions is mentions to "Only use NMP's Lithium charger to charge
> these packs."  I was wondering if anyone might know why this would be
> the case.  Shouldn't any Li battery charger work?  I already have a
> Kokam Li battery charger which allows me to charge at various rates.
> Is there a legitimate reason why I should buy their charger or should
> any Li charger work?  Also, I was surprised at the diminutive size of
> the pack.  Does this pack have enough juice to power 3x JR9411, 1x3412
> and 1x8411 in a Temptation?  At 2A I would assume that this would be
> more than plenty?  I would be interested in hearing anyone's experience
> with these packs.
>
> Thanks
>
> DIeter
>
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