Go Back   RCCrawler Forums > RCCrawler General Tech > Electronics
Loading

Notices

Thread: Another NOOB Li-Po ??

Reply
 
LinkBack Thread Tools Display Modes
Old 10-03-2013, 08:13 PM   #1
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default Another NOOB Li-Po ??

Hello all, sorry for the dumb questions, but I would rather ask here, then fry something, and have to spend money because I didn't ask. I would rather spend it on upgrades. Anyway, my question is. Can I run say a 2000mah battery and a 4000 mah battery on a "Y" so they are in parallel? Or is that going to cause me some problems? Do they have to be the same mah?

Thanks in advance, this place is AWESOME.

Matt
dozerboy is offline   Reply With Quote
Sponsored Links
Old 10-03-2013, 08:16 PM   #2
Newbie
 
Join Date: Oct 2011
Location: eastern sierra
Posts: 34
Default Re: Another NOOB Li-Po ??

Thats a great question and I don't know the answer. I would tend to think no as the batteries would try to equalize? I don't think I would do it. Maybe an EE can chime in?
eastside is offline   Reply With Quote
Old 10-03-2013, 08:40 PM   #3
Rock Crawler
 
Join Date: May 2012
Location: Upland
Posts: 901
Default

There are two different types of Y harnesses for two battery set ups. Look into parallel and serial wiring. Parallel adds amperage, but you want them to be the same amp hour rating on each pack or you will be losing a lot of efficiency. Be careful using series, your battery packs are already wired in series. I'm busy right now. I will post something for you later if you don't look it up first

Sent from my PG86100 using Tapatalk 4
z50king is offline   Reply With Quote
Old 10-03-2013, 08:44 PM   #4
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by z50king View Post
There are two different types of Y harnesses for two battery set ups. Look into parallel and serial wiring. Parallel adds amperage, but you want them to be the same amp hour rating on each pack or you will be losing a lot of efficiency. Be careful using series, your battery packs are already wired in series. I'm busy right now. I will post something for you later if you don't look it up first

Sent from my PG86100 using Tapatalk 4
I guess what I am trying to do is basically get 6000mah in theory. If that makes sense. I don't even have a Y cable yet, but the one I ordered has the +'s together, and the -'s together, hopefully you understand what my non-technical explanation. LOL
dozerboy is offline   Reply With Quote
Old 10-03-2013, 10:08 PM   #5
Rock Crawler
 
Join Date: May 2012
Location: Upland
Posts: 901
Default Re: Another NOOB Li-Po ??

that is parallel, but you don't want to wire those two together that way. The 2Amp/hour battery is going to drain faster and the 4Amp/hour battery is going to constantly be recharging the other battery. It will waste a lot of electricity. It should work and be fine, but it's not ideal. It's a voltage problem and each battery will be sagging and gaining wildly, which lipos can handle, but again, it's not ideal
z50king is offline   Reply With Quote
Old 10-03-2013, 10:18 PM   #6
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by z50king View Post
that is parallel, but you don't want to wire those two together that way. The 2Amp/hour battery is going to drain faster and the 4Amp/hour battery is going to constantly be recharging the other battery. It will waste a lot of electricity. It should work and be fine, but it's not ideal. It's a voltage problem and each battery will be sagging and gaining wildly, which lipos can handle, but again, it's not ideal
That is what I was wondering... Guess I will just HAVE to buy another 4000mah battery... DARN..


Thank you all. I appreciate it very much.
dozerboy is offline   Reply With Quote
Old 10-04-2013, 06:08 AM   #7
I wanna be Dave
 
Join Date: Nov 2010
Location: 07456 N. NJ USofA
Posts: 8,315
Default Re: Another NOOB Li-Po ??

1-Yes it will work (2 different mah's in parallel)
2-No, it's not ideal
3-A 4000mah pack will give lots of runtime, no need to make it bigger
4-You will start having issue with where to put the packs

I would stick to a single pack, even a 2000mah pack will give a fair amount of runtime. If you parallel anything, I would do 2 2000mah packs.
Charlie-III is offline   Reply With Quote
Old 10-04-2013, 07:30 AM   #8
Rock Crawler
 
Join Date: Jul 2012
Location: Grand rapids
Posts: 770
Default Re: Another NOOB Li-Po ??

I run many different mah sizes on my 5000mah 2s I can drive all day and still not drain a battery, or I get bored first, depending on which rig I'm running 4000mah is plenty of run time.
Bogncrawl is offline   Reply With Quote
Old 10-04-2013, 01:14 PM   #9
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default

Awesome. Thanks for the replies. I have a new 2000 and another one on the way along with a brand new 4000. So I should be all set.

Thanks again for putting up with my newbie questions.


Sent from my iPad using Tapatalk HD so it probably autocorrected something wrong.
dozerboy is offline   Reply With Quote
Old 10-04-2013, 01:47 PM   #10
Rock Crawler
 
Join Date: May 2012
Location: Upland
Posts: 901
Default Re: Another NOOB Li-Po ??

I run 1600mAh batteries in parallel. They were comp batteries and they still work great but 1600mAhs in a Wraith doesn't last very long.

I use these to parallel my batteries. It's the same as buying a Y but less wiring sitting under the hood.

This is the cheapest on eBay for the no wire. There are others. I bought them a while ago and they were 7.50 each, I think!
Wireless Deans Style Parallel Battery Connector 2 Ultra T Plug Male to 1 Female | eBay
z50king is offline   Reply With Quote
Old 10-05-2013, 06:56 AM   #11
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default

Cool. I will see if they have one like my plug. I can't think of the name of the plug right now. But I don't think it was Deans.


Sent from my iPad using Tapatalk HD
dozerboy is offline   Reply With Quote
Old 10-05-2013, 09:06 AM   #12
I wanna be Dave
 
Join Date: Nov 2010
Location: 07456 N. NJ USofA
Posts: 8,315
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by dozerboy View Post
Cool. I will see if they have one like my plug. I can't think of the name of the plug right now. But I don't think it was Deans.


Sent from my iPad using Tapatalk HD
If it's a Tamiya, don't bother, switch to something better now.
Charlie-III is offline   Reply With Quote
Old 10-05-2013, 09:17 AM   #13
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by Charlie-III View Post
If it's a Tamiya, don't bother, switch to something better now.
It's a Veterra Twin Hammers. So no idea what it is, this is my first electric truck/car.
dozerboy is offline   Reply With Quote
Old 10-05-2013, 10:19 AM   #14
I wanna be Dave
 
Join Date: Nov 2010
Location: 07456 N. NJ USofA
Posts: 8,315
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by dozerboy View Post
It's a Veterra Twin Hammers. So no idea what it is, this is my first electric truck/car.
Tamiya is the white connector... ProTek R/C Tamiya to XT60 Plug Adapter (Female Tamiya to Male XT60) [PTK-5305] | Electric Accessories - A Main Hobbies

Charger Adapter for Airsoft gun Battery Pack --- One Side Large Male To Mini Female Tamiya Connector



Deans, Traxxis, "XT" series, Sermos, etc are all better to use.

Last edited by Charlie-III; 10-05-2013 at 10:22 AM.
Charlie-III is offline   Reply With Quote
Old 10-05-2013, 12:07 PM   #15
I wanna be Dave
 
Join Date: May 2007
Location: Fairfield ME
Posts: 3,885
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by dozerboy View Post
It's a Veterra Twin Hammers. So no idea what it is, this is my first electric truck/car.
The stock plug is an EC3.
Calderwood is offline   Reply With Quote
Old 10-05-2013, 12:17 PM   #16
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by nigels_world View Post
The stock plug is an EC3.
I was just getting ready to post that. Is that a good plug? The 2 -2000mmAh batteries I bought came with several different ends.
dozerboy is offline   Reply With Quote
Old 10-05-2013, 12:22 PM   #17
I wanna be Dave
 
Join Date: May 2007
Location: Fairfield ME
Posts: 3,885
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by dozerboy View Post
I was just getting ready to post that. Is that a good plug? The 2 -2000mmAh batteries I bought came with several different ends.
Yep it's fine. It seems to be horizons favorite connector. I like deans t plugs for stuff like scalers. Mini t plugs on comp stuff.
Calderwood is offline   Reply With Quote
Old 10-06-2013, 09:29 AM   #18
Rock Crawler
 
Join Date: May 2012
Location: Upland
Posts: 901
Default

Where are you going to put all these batteries on a twin hammers? TH is a very small rig

Sent from my PG86100 using Tapatalk 4
z50king is offline   Reply With Quote
Old 10-06-2013, 10:46 AM   #19
RCC Addict
 
Join Date: Feb 2012
Location: paradise
Posts: 1,354
Default Re: Another NOOB Li-Po ??

I have a 3s 3400 mah in my 10lb wraith with a lot of power and get 1 1/12-2 hours out of it. So if you parallel the 2000 mah packs to make 4000mah. Your TH should run until you don't want to run anymore.
crawler nut is offline   Reply With Quote
Old 10-06-2013, 12:16 PM   #20
Newbie
 
Join Date: Sep 2013
Location: USA
Posts: 27
Default Re: Another NOOB Li-Po ??

Quote:
Originally Posted by z50king View Post
Where are you going to put all these batteries on a twin hammers? TH is a very small rig

Sent from my PG86100 using Tapatalk 4
I was going to parallel the 2000's, but NOT the 4000. I was just wondering if it was possible to do a 2000 and a 4000 in parallel, more just so I knew.
dozerboy is offline   Reply With Quote
Reply



Another NOOB Li-Po ?? - Similar Threads
Thread Thread Starter Forum Replies Last Post
Noob in need enazatol Venom Creeper 27 06-20-2011 04:09 AM
noob, with noob questions farmerstoy General Scale Talk 12 01-14-2010 06:28 PM
Noob Help YAKIMA RC RACER HPI Wheely King 8 06-05-2007 11:28 AM
Noob here Rhino8123 HPI Wheely King 2 04-30-2007 06:57 PM
NOOB ???'s Rocfrog Newbie General 6 12-04-2006 09:51 AM
Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 05:07 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com