R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 10-11-2001, 02:04 PM   #1
Tech Initiate
 
Join Date: Sep 2001
Location: Daly City, CA
Posts: 20
Send a message via AIM to ryan
Default Battery setups and charging

Hey everyone

I'm new to 'electrics' since I started initially with nitro cars so forgive me for my newbie-ness. Basically I have a Losi XXX-S,
Trinity Panasonic 3000 NiMHs in side by side configuration, novak
TC2, novak xxxtra synthesized, and reedy mvp. The Panasonics are my only battery pack (FOR NOW). I'm gonna solder everything
accordingly, etc. etc. Now when it comes to charging, must I de-solder the battery from the ESC and motor when it's time to re-charge? If so, is there an easier way to do this every single time?
Also, when I get new batt packs, I want to also get some stick packs for easy running and charging. Since I have one side by side now that requires soldering, how can I configure the setup so that I can also use the stick packs with the Tamiya style connectors when I want to change battery types? Or should I just stick to side by sides all the time. Maybe I should use bullet-type connectors so connecting the batteries won't require constant soldering. But then again there's that awful problem of resistance and decreased efficiency.. yikes.. too many things to factor in. Any thoughts or comments are much appreciated!

Oh by the way I'm using the Intellipeak Digital Pulse charger. It has alligator style clips for charging soldered packs and also a Tamiya style connector for charging sticks.
ryan is offline   Reply With Quote
Old 10-11-2001, 02:22 PM   #2
Tech Elite
 
Cole Trickle's Avatar
 
Join Date: Sep 2001
Location: Denmark / Europe
Posts: 2,571
Default

I would definately go for saddle packs all the way. Because then you can use an equalizer, which gives both better battery performance (=speed) AND improves your battery lifetime. This advantage will greatly overrule the powerloss in some good quality connectors.

Somewhere I've read that the resistance in good connectors is about 0,0001 ohm (if I remember correct). Ohms law: U=R*I (Volt=Resistance*Ampere). According to Tekins homepage, an motor in a RC car maximum draw 120 amps. In other words, the voltage loss in a good connector, is as low as 0,01 volt. Matbe the world champions can feel the difference, but I don't believe that normal people can feel the difference.

Get extra batteries soon. Reduce waiting time and it hurt the batteries a lot, if charged while still hot. Especially NiMh.
Cole Trickle is offline   Reply With Quote
Old 10-11-2001, 09:23 PM   #3
Tech Elite
 
Join Date: Sep 2001
Posts: 3,117
Trader Rating: 68 (100%+)
Default

get side by side packs so you can use a battery equalizer. also, it will sit lower in the chassis for a slightly lower center of gravity. i use corally type connectors because i dont need long battery wires for each battery pack, just the wires from the esc to each battery terminal.
marvi is offline   Reply With Quote
Old 10-11-2001, 09:33 PM   #4
zxt
Tech Regular
 
zxt's Avatar
 
Join Date: Aug 2001
Location: Manila
Posts: 294
Default equalizer?

what is that? Also why saddle is better than sticks?
zxt is offline   Reply With Quote
Old 10-11-2001, 09:39 PM   #5
TFR
Tech Master
 
TFR's Avatar
 
Join Date: Aug 2001
Location: Toronto
Posts: 1,767
Trader Rating: 11 (100%+)
Default

Saddle is better than stick because i think is that stick pack, all the batteries are in different voltage and cant not be discharge to the same amount for all six cell, but for saddle or side by side., you could discharge each one...

damn, all the nice equipment, how do u like your XXX-S?
TFR is offline   Reply With Quote
Old 10-11-2001, 09:52 PM   #6
Tech Elite
 
Join Date: Sep 2001
Posts: 3,117
Trader Rating: 68 (100%+)
Default

equalizer: a discharge tray (such as trinity real time 2) that discharges each cell individually. you can only equalize side by side or saddle packs because theyre the only configuration where the + and - terminals are exposed to be discharged individually.
marvi is offline   Reply With Quote
Old 10-12-2001, 01:17 AM   #7
Tech Elite
 
Cole Trickle's Avatar
 
Join Date: Sep 2001
Location: Denmark / Europe
Posts: 2,571
Default Ouch, forgot one thing...

I only use NiCd's. I don't got experience on equalizing NiMh's. NiMh are more sensitive to the way they are treated. Hopefully some NiMh-guys will comment on this.
Cole Trickle is offline   Reply With Quote
Old 10-12-2001, 09:58 PM   #8
zxt
Tech Regular
 
zxt's Avatar
 
Join Date: Aug 2001
Location: Manila
Posts: 294
Default Thanks

now I know....
zxt is offline   Reply With Quote
Old 10-13-2001, 06:55 AM   #9
Tech Master
 
Alvin's Avatar
 
Join Date: Aug 2001
Location: Singapore, Jurong East
Posts: 1,654
Default Storing Stick type nicads

Hi!
What's the proper procedure to be performed on stick type nicads before I put 'em into storage for a few months?
Alvin is offline   Reply With Quote
Old 10-13-2001, 07:31 AM   #10
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,951
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

I would discharge them on a bulb discharge w/ a cutoff device ( or unplug the cells when the bulbs are about to go out, to prevent cell reversal). then just let them sit. You cant throw them on an equalization tray, so its about all you can do.
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 10-13-2001, 07:36 AM   #11
Tech Master
 
Alvin's Avatar
 
Join Date: Aug 2001
Location: Singapore, Jurong East
Posts: 1,654
Default

thank you! I have already discharged 'em with those cut off devices.... so guess I'll just put 'em away!

Thanks.
Alvin is offline   Reply With Quote
Old 10-13-2001, 07:53 AM   #12
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,951
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

No problem.. With stick packs, thats the problem, is you can't do anything past putting them on a discharger. You can't put them on an equalization tray like you can with side by side packs.
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 10-13-2001, 07:54 AM   #13
Tech Master
 
Alvin's Avatar
 
Join Date: Aug 2001
Location: Singapore, Jurong East
Posts: 1,654
Default

Is there a thread somewhere on storing NiMH Sanyo 3ks? I forgot all about storing 'em since rct went down...
Alvin is offline   Reply With Quote
Old 10-13-2001, 08:01 AM   #14
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,951
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

Battery info

take a look there.... it has some info, but might be more for the SMH 3k's
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 10-13-2001, 08:09 AM   #15
Tech Master
 
Alvin's Avatar
 
Join Date: Aug 2001
Location: Singapore, Jurong East
Posts: 1,654
Default

thanks!
Alvin is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Battery Charging rf096 Racing Forum 16 06-01-2015 03:24 PM
Charging Ni-Cd battery jayliu1984 Electric Off-Road 8 02-27-2008 11:32 AM
Battery charging Ian C Electric On-Road 3 03-24-2007 10:30 PM
Battery charging help fordman86 Electric Off-Road 12 04-19-2006 11:23 PM
Step Charging Setups micros_rock Electric On-Road 0 06-08-2005 04:53 PM



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 05:07 AM.


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