What NiMH 6.0V battery charger do I need?

[Adam Quennoz]

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

   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20030214/9f75c0c9/attachment.html