What NiMH 6.0V battery charger do I need?

Fri Feb 14 14:30:21 AKST 2003

At 20-30% more expensive than all the other choices I had mentioned, it 
needs some justification on its ultimate superiority.  I didn't see 
anything in its description that provided that differentiation.  The Robbe 
user manual is online, but I couldn't find the online manual for the 
others.  I think they are all similar in their capabilities, but since I 
could review the manual for the Robbe, that's what I bought.  Maybe I can 
get Wayne to bring his manual to my house and we can compare at least the 
Robbe to the SuperNova.  I notices the Triton at the hobby shop today so 
this one looks like it will be easily accessible to everyone.

--Lance

"Adam Quennoz" <aquennoz at ipa.net>
Sent by: discussion-request at nsrca.org
02/14/2003 05:03 PM
Please respond to discussion

        To:     <discussion at nsrca.org>
        cc: 
        Subject:        Re: What NiMH 6.0V battery charger do I need?

Hey Everybody,

You might want to give the Microlader 6.0 a look.  I just bought one.  It' 
very flexable as far as charging/cycling goes.  Easy to use too.  They've 
also have a version that will interface with your PC to graph the 
charging/discharging curves. 

Right now I'm conditioning my new Nimh batteries with it.  Only thing I 
don't like about it is it 12V DC only. 

It can be found at:  http://radicalrc.secure-mall.com

Click on "Charging Tools".  Then click on "Fast chargers & cyclers"

Regards,
Adam Quennoz
AMA 383866
IMAC 2439
NSRCA 3546

----- Original Message ----- 
From: Tomanek, Wojtek 
To: 'discussion at nsrca.org' 
Sent: Friday, February 14, 2003 8:05 AM
Subject: RE: What NiMH 6.0V battery charger do I need?

Yes you can charge 5C batteries with standard wall charger, they usually 
have a output voltage over 6.5 Volt so it will work but takes forever (nut 
much current going form charger to battery if the voltage differential is 
on the order of 0.2 ? 0.5 Volt).  When a diode my TRC charger fried that 
is what I had to use for couple days before brown truck pulled up to the 
driveway.  But is sound like you should not have problems with the 
chargers you have (especially Ace Smart).  If you were to get a new 
charger the Dymond Super Turbo is a great unit with a lot of flexibility 
and it works as a field unit but if I was to get one now the Great Planes 
Triton may be a better choice because it works for Li-ion and Li-poly 
batteries too. 

Wojtek

-----Original Message-----
From: Troy Newman [mailto:troy_newman at msn.com]
Sent: Friday, February 14, 2003 1:39 AM
To: discussion at nsrca.org
Subject: Re: What NiMH 6.0V battery charger do I need?

Ace Smart charger is a copy of the Sirius charger...it was designed for 
Nicad and Nimh batteries. The only concern when using Nimh batteries is 
not to charge them at C...meaning if its a 1650mah pack don't stick 
1.65amps in it...you will be fine...You can use a Ace smart charger or the 
wall chargers.....Now the wall chargers or you digipace are designed for 4 
cells and not 5..This only has one factor to take into consideration. The 
wall chargers will charge the 5 cell packs just not in the regular 
time...it takes a little longer than 16hrs to full charge a dead 
pack....The way the chargers work is they are designed around an expected 
internal resistance inside the battery...that resistance goes up by 25% 
when using a 5 cell pack....soooooo what happens there is a higher voltage 
drop over the battery than the charger is expecting...But if you check the 
voltage coming out of the wall chargers you will find it is much higher 
than the battery voltage anyway.....so don't swat it just realize what you 
are doing...Smart charge type devices are the absolute best for charging 
anyway....I use my Sirius Pro charger for everything and use it instead of 
the wall most of the time....Its rare I charge at a wall outlet once a 
month and that's flying 5-6 days every week.

I am currently using 1650 nimh batts in all my pattern models. Hangar 9 
also makes a charger called the Perfect Peak...its the same thing as the 
Sirius and Smart charge. It has a beeper in to tell when its done.....But 
I actually leave the packs on the Sirius all the time....I have packs 
lasting a couple years of hard flying....I'm talking 600-900 flights a 
year....Been using the Nimh now for the 3rd year.

Troy Newman

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