R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 06-26-2009, 09:20 AM   #1
Tech Master
 
t0adman's Avatar
 
Join Date: Apr 2008
Location: Seattle, WA
Posts: 1,239
Trader Rating: 8 (100%+)
Post Ideal charging settings for NiMH Rx packs

Hey guys - sorry if this isn't the exact right forum section to post this but I'm raicng tomorrow and charging now. This section, as we all know, gets 10x the looks the radio section does.

So I'm using the Duratrax Onyx 230 to charge my NiMH Rx packs. I have the OFNA 1700, the Stickman 2500 and the Reedy 1600.

Right now I've got it set at a .3A charge, 6.0V rate nominal voltage (per the battery), and peak sens. setting at 3mV/C, no timeout, 0mA trickle.

Right now I've got plenty of time to charge and I'm trying to maximize battery charge, output time and battery life. Would you guys recommend different settings? If so, what?

Racing tomorrow! TIA.
__________________
RC8e, SCRT10e, Mod Slash 2WD
[Team Terribles]
t0adman is offline   Reply With Quote
Old 06-26-2009, 09:22 AM   #2
Tech Addict
 
beginner4life's Avatar
 
Join Date: Jun 2008
Posts: 513
Trader Rating: 9 (91%+)
Default

that should work just fine. except i would recommend buming it up to like .4 because it weill take reallly long otherwise.
__________________
*Team Terribles*

RC8T-RB S3-Hitec Servos- Spektrum
beginner4life is offline   Reply With Quote
Old 06-26-2009, 09:24 AM   #3
Tech Master
 
t0adman's Avatar
 
Join Date: Apr 2008
Location: Seattle, WA
Posts: 1,239
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by beginner4life View Post
that should work just fine. except i would recommend buming it up to like .4 because it weill take reallly long otherwise.
I was under the impression the lower the charge amp the longer the battery life and better it is for the battery. Is there a certain level under which that's not necessary? Is that .5A?
__________________
RC8e, SCRT10e, Mod Slash 2WD
[Team Terribles]
t0adman is offline   Reply With Quote
Old 06-26-2009, 10:16 AM   #4
Tech Fanatic
 
unsp0ken's Avatar
 
Join Date: Feb 2007
Location: Fontana, CA
Posts: 769
Trader Rating: 24 (100%+)
Default

i charge mine at .3 also. slow charge is best; less chance of getting false peaks. only charge fast if you're on a time crunch.
unsp0ken is offline   Reply With Quote
Old 06-26-2009, 10:41 AM   #5
Tech Master
 
cary's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: NorCal
Posts: 1,914
Trader Rating: 67 (100%+)
Default

I have had good luck at .5A charge rate on 1600 reedy packs
just switch over to lipo last two races and I'm lovin it 2000
pack had more than enough for all day
__________________
Xray XB8 14,AE RC8T3,XB9 13,Kyosho wheeler,Losi SCTE 2.0,+ More
> The Animal,Frank L. Jr. <
~~~~RedRock Hobbies~~~~
cary is offline   Reply With Quote
Old 06-26-2009, 10:44 AM   #6
Tech Master
 
Join Date: May 2008
Posts: 1,771
Trader Rating: 7 (100%+)
Default

When I am charging my EP1500 the night before of the day of, I charge it at .5 amps. When I am at the track and have something to do, 1 amp. If I am in a time cruch 1C or 1.5 amps. I have the peak sens. set at 6mV and 50mA trickle. So, for the bigger batteries I would charge the Stickman at 2 amps or so, normally charging it at 1 amp. A little guage you can do, when you need to recharge it, put it on for 1 amp (any of them) and when the battery is done, feel how warm it is. It should be warm, but not hot to your finger. Do this when you battery is cool too.
__________________
Losi 8ight 1.5 ~ 8T ~ XXX Buggy ~ Mini-Baja

The o''le saying goes, pay me now, or pay me later, because you gonna pay me. "Pearl_414"
Chris__RC is offline   Reply With Quote
Old 06-26-2009, 12:37 PM   #7
Tech Fanatic
 
Join Date: Jan 2009
Location: Connecticut
Posts: 775
Trader Rating: 4 (100%+)
Default

If I had kept my Onyx 230 I would have gone for 1/2C, or as close as possible, which would have been 1.2 amps for my Stickman 2500 mah, but because I have a Onyx 200, I use 1A for a slow charge and 2.5A if I'm at the track.
__________________
LRP Z.28R - 3
Spur Gear - 0
howtowakeakar is offline   Reply With Quote
Old 06-26-2009, 04:17 PM   #8
Tech Regular
 
Join Date: Mar 2008
Posts: 330
Trader Rating: 4 (100%+)
Default

i have the ballistic 2700 batt. ,i agree to the all post above ,slow is the best i always do the .5a & make sure its warm not hot lol,some guys here simply dont get it they so itchy to run so they do fast charging when it comes to main damn too many complains start blaming the rx batt. slow servo torque & etc. lol ................when it comes to this ,the battery needs attention, the warm rx battery is way to go but not hot battery after charging
mbx5rcr34 is offline   Reply With Quote
Old 06-26-2009, 04:27 PM   #9
Tech Adept
 
what_stanger?'s Avatar
 
Join Date: Mar 2009
Location: Northern IL
Posts: 138
Trader Rating: 8 (100%+)
Send a message via AIM to what_stanger?
Default

I charge mine at .7/.8

I would think 1 amp would be okay too, in a pinch....hell probably even higher if you were really strapped for time.
what_stanger? is offline   Reply With Quote
Old 06-26-2009, 05:20 PM   #10
Tech Elite
 
Join Date: Mar 2009
Posts: 3,657
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by cary View Post
I have had good luck at .5A charge rate on 1600 reedy packs
just switch over to lipo last two races and I'm lovin it 2000
pack had more than enough for all day
this is 5 amps correct? not half a amp?
dreaux is offline   Reply With Quote
Old 06-26-2009, 05:23 PM   #11
Tech Master
 
pyromania's Avatar
 
Join Date: Feb 2009
Location: North Hills, CA
Posts: 1,283
Trader Rating: 18 (100%+)
Default

Quote:
Originally Posted by dreaux View Post
this is 5 amps correct? not half a amp?
Why would you ever think receiver packs should be charged at 5 amps? I'm sure the means .5 or 1/2 an amp.
__________________
Jesse Carrillo
Team Driver For:
TLR | Horizon Hobby | Nitrotane | Spektrum | HandleITHobbies | 818 Designs
pyromania is offline   Reply With Quote
Old 06-26-2009, 05:27 PM   #12
Tech Master
 
cary's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: NorCal
Posts: 1,914
Trader Rating: 67 (100%+)
Default

look at the . in front of the 5 yes .5 = 1/2 a amp not 5.0 amps
so how was transformers
__________________
Xray XB8 14,AE RC8T3,XB9 13,Kyosho wheeler,Losi SCTE 2.0,+ More
> The Animal,Frank L. Jr. <
~~~~RedRock Hobbies~~~~
cary is offline   Reply With Quote
Old 06-26-2009, 05:29 PM   #13
Tech Elite
 
Join Date: Mar 2009
Posts: 3,657
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by pyromania View Post
Why would you ever think receiver packs should be charged at 5 amps? I'm sure the means .5 or 1/2 an amp.
i just got a superbrain. I have been using a wall charger for months i have a orion 1600 and a stickman 2500 for my transmitter. The charger is confusing as hell for me right now and i am a electrician

What amp rate should i charge my 1600 even at .3 isn't that twice the recomended capacity? should it be .16? and the milivolt setting is 5 mv per cell?

Please help.
dreaux is offline   Reply With Quote
Old 06-26-2009, 05:31 PM   #14
Tech Elite
 
Join Date: Mar 2009
Posts: 3,657
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by cary View Post
look at the . in front of the 5 yes .5 = 1/2 a amp not 5.0 amps
so how was transformers
it was a bad ass movie bro. I liked it better then the first. Special effects were off the hook!! Tons of action! great movie.
dreaux is offline   Reply With Quote
Old 06-26-2009, 05:33 PM   #15
Tech Master
 
cary's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: NorCal
Posts: 1,914
Trader Rating: 67 (100%+)
Default

cool I may have to go
__________________
Xray XB8 14,AE RC8T3,XB9 13,Kyosho wheeler,Losi SCTE 2.0,+ More
> The Animal,Frank L. Jr. <
~~~~RedRock Hobbies~~~~
cary is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 11:54 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net