[NSRCA-discussion] Li-Po and Regulators for 4C applications

Sun Feb 24 11:05:56 AKST 2008

I'll give the Hobbico Accucycle Elite  a vote for charging the TX  and the
RX flight pack at the same time  from AC or DC power source. It gives all
the info you could want on a LCD display and with two outputs will charge
them both at the same time. IT also cuts off when the pack is charged ( I
know cuz I left my foamy 3s pack on charge and went into work at lunch the
other day. Found it still beeping when I came out after closing the store.
It didn't drain my battery in my car so I was even able to start the car to
go home  :-)  Now before someone says anything -I know -  DO NOT CHARGE IN
THE CAR !!  and DO NOT CHARGE UNATTENDED !!.  I I made a mistake but I got
away with it and I'm giving the Elite credit for that <G>

Now FWIW  (For charging anything from 2s to 6s up to 8amps) I just got the
new TME Extrema Charger with integrated balancers. Used it first time today.
VERY NICE ! You can even log the charge process on your laptop while
charging if you want to.  One charger can handle four 6s balancers but with
a limit of 8amps. More to come later as I'm just starting to use it.

Eddie

  _____  

From: nsrca-discussion-bounces at lists.f3a.us
[mailto:nsrca-discussion-bounces at lists.f3a.us] On Behalf Of Lance Van
Nostrand
Sent: Saturday, February 23, 2008 11:34 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Li-Po and Regulators for 4C applications

John,

That sounds very good.  This may be the answer.  After a short internet
search it looks like the astro109, and TP have chargers in the same price
range.  Some people swear by their Triton II.  There are a lot of more
obscure companies making what seem to be combination chargers or Li chargers
that do what I had requested.  your recommendation carries a lot of weight
with me.  I'm not sure if balancing is important with a 2S pack but I do
have a passive balancer that can be used after charging.  I think Falcon
batteries believes that this is an acceptable way to balance a pack (doesn't
have to be balanced during charging) so if this is correct the Sirius might
be enough.  Red Sholefield used to do excellent reviews of NiCd/NimH
chargers but for LiPo's he seems to just recommend FMA products.

I'd love to hear other peoples recommendations but only for chargers with
displays that can show charging information.  For old-school packs I have 2
Robbe Infinity2 chargers and they have a pack diagnostic mode that is to die
for.  It finds weaknesses in packs that seem to be operating OK.  Of course
it may be a random number generator but I decided to run the diagnostic a
few times a year and if it fails a pack I toss it.  After losing 4 planes to
power problems a few years ago I think the $18 on a new NimH pack is cheap
insurance if necessary, but I usually get well over a year on a pack.

--Lance

----- Original Message ----- 

From: John Pavlick <mailto:jpavlick at idseng.com>  

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Friday, February 22, 2008 11:35 PM

Subject: Re: [NSRCA-discussion] Li-Po and Regulators for 4C applications

Lance,

 The Sirius Lithium charger tells you how much energy has gone back into the
battery as well as showing what the charge current is and also if it's in
constant current or constant voltage mode. That should be enough for you to
figure out if it really charged the battery or not.

John Pavlick
http://www.idseng.com

----- Original Message ----- 

From: Lance Van <mailto:patterndude at tx.rr.com>  Nostrand 

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Friday, February 22, 2008 8:55 PM

Subject: Re: [NSRCA-discussion] Li-Po and Regulators for 4C applications

Colin,

I've been trying a similar setup. 1200maH 2S lipo with a Radio South 5.1v
reg in my glow plane.  It's been performing fine so far but my charger is
not a fancy one that tells me how much is put back in after a day flying.  I
don't fly electric but still would like to use a charger that is not just a
blinky light.  These got me in trouble with NiCds and I learned my lesson
there.  Sadly, for this experiment all I have is the Great Planes blinky
light charger that I use for my foamies.  Any recommendations?

--Lance

----- Original Message ----- 

From: colin chariandy <mailto:cchariandy at yahoo.ca>  

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Wednesday, February 20, 2008 9:57 AM

Subject: [NSRCA-discussion] Li-Po and Regulators for 4C applications

Hi all

Is anyone using the TP Voltage Regulators with Failsafe switch? They are
available here in Canada (unlike most other things) and I would like to
consider upgrading my ancient NiCD technology.

Considering the 1400mAH 2S TP with the TP 5.1V regulator in a 170 powered
Integral. I am using an ARA170 mount...if that changes the assesment.

Any comments? 

Any reliability issues I may have missed ?

Colin.

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