R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 02-22-2009, 08:36 PM   #1
Tech Rookie
 
Join Date: Jun 2008
Posts: 10
Default battery help. lipo. 8000mAh

I found these. are they any good?

http://www.mmhobby.com/lipoba.html

I have the traxxas brushless system. these batteries look like a good deal! are there better deals out there. should I get 2s or 3s? I usually stop by the track for a hour or 2. so I would think some 8000mAh lipos would do me for almost 2h run time in my slash.

I like the idea of half/hour run times. I heard I would need 8000mAh to do that. Plus when I go for a Electric monster truck later this summer. I wont have to get new batteries. I could throw the 8000mAh in that. and get some smaller ones for the slash.

Anything else you have would be appreciated. This is my first electric.
Eppidemic is offline   Reply With Quote
Old 02-22-2009, 08:40 PM   #2
Tech Elite
 
Join Date: Jun 2005
Posts: 2,570
Trader Rating: 26 (96%+)
Default

they are great batteries, but you should try ordering them from truerc.net
party_wagon is offline   Reply With Quote
Old 02-22-2009, 08:41 PM   #3
Tech Addict
 
bprc10T3's Avatar
 
Join Date: Feb 2004
Location: Statesville NC
Posts: 708
Trader Rating: 90 (100%+)
Default True R/C lipo

I have a 8000mah True R/C lipo I run in my 10th scale truck.It has worked flawless for over 1 year now.Great pack for the price.
bprc10T3 is online now   Reply With Quote
Old 02-22-2009, 08:51 PM   #4
Tech Champion
 
whitrzac's Avatar
 
Join Date: May 2008
Location: WI
Posts: 5,750
Trader Rating: 96 (100%+)
Default

true RC packs are the best packs you can buy for the $$$ awsome CS to


http://home.comcast.net/%7Etruerc/re...eady_packs.htm
whitrzac is offline   Reply With Quote
Old 02-22-2009, 10:05 PM   #5
Tech Rookie
 
Join Date: Jun 2008
Posts: 10
Default

I noticed the "C" rating on the TrueRc packs is less than the Maxamp. I'm guessing its a higher amp discharge. but what does that mean for my Slash? higher top speeds? better accel? cooler motor? I would love to save a ton of money on the TrueRC batteries. But what am I giving up? If I can pull wheelies with my 7cell nimh. These batteries have got to be amazing.

Is the volts whats important for accel/speed. or amps? should I get 3s or 2s. They seem to give the same runtime, but with the 3s being 1/3 faster. looks like I should spring the extra $ for the 3s...? Will 2s be way faster than my 7cell nimh. Or will it just run way longer?

Please. anything else I should know. I like to be well informed, and I'm new to electric. And this all needs to be compatible with the traxxas vxl system.
Eppidemic is offline   Reply With Quote
Old 02-22-2009, 10:59 PM   #6
Tech Rookie
 
Join Date: Jun 2008
Posts: 10
Default

http://www.amainhobbies.com/product_...oducts_id/7661

does this item do lipo? it says so in the title. but not in the specs... If its any good. thats an amazing price

Whats the cheapest 10A charger on the market. either AC/DC or just DC+price of a 10A power unit? I'm going to get some 10000mAh lipo. they should run for about an hour. If my math is right. a 10a charger would charge 10000mAh battery in 1 hour.

The idea is... That I would have virtually no down time between runs.

thank you

Last edited by Eppidemic; 02-22-2009 at 11:14 PM.
Eppidemic is offline   Reply With Quote
Old 02-23-2009, 05:52 AM   #7
Tech Lord
 
Join Date: Jul 2008
Location: Houston, TX
Posts: 11,530
Trader Rating: 21 (100%+)
Default

Specs - 3rd bullet down - "Charges: 1 to 25 NiCd / NiMH Cells, 1 to 8 Cell Lithium, and 6-24 volt Lead Acid/Gel Cell Batteries". You won't find a 10amp hobby AC/DC charger, they're usually always limited to 50wattts output power. CHeapest 10a charger I know off - Hyperion 0610iNet, $150. Needs a 20amp continuous rated power supply, so another $50-70.

Downside to a large capacity lipo like these is the weight, these weigh a lot relatively speaking, look at some of the listed weights and compare to 5000mah size. They're also physically large - be sure you can make one fit. I'd get them direct from TrueRC rather than pay a middle man.

TrueRC makes up for its low C rating with the bigger capacity so it can still deliver the amps. From what I've read, their C Rating appears to be conservative, not the other way around.
Duster_360 is offline   Reply With Quote
Old 02-23-2009, 10:34 AM   #8
Tech Master
 
gweed's Avatar
 
Join Date: Feb 2008
Location: crimelawn
Posts: 1,045
Trader Rating: 2 (100%+)
Default

i wouldent bother with that especially if you want to race at a track. look at this one

https://www.ssl-stormerhobbies.com/pics/smc5240cm.jpg


and any of these
http://www.stormerhobbies.com/cgi-bi...&uterm=&sthumb

smc makes some of the best lipos out there and thier prices are very competeive
__________________
kyoslo RB5/ novak motors/ LRP sphere/ m11/ orion 4800,3800,3600/ blazin chronic racing/wphukuall radio/ raikkonen body/ mongoosed km-mini inferno with the multiplex red ass servo that owns johnny b-main and drew/ now at lir the JDM zx-5 sp mugen edition

"team bad guys"
gweed is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric 1/8th Scale conversion kits. DJ1978 Electric Off-Road 19923 06-12-2017 06:16 AM
Thunder Power Rc 40C 5000 Lipo ThunderPowerRC Electric On-Road 439 02-25-2010 04:35 PM
Fusion EX1R PRO Set up/tuning/Build thread yoshgixxer Electric Off-Road 318 08-07-2009 07:43 AM
20 Minute Electric Main Li-Po Truck Class ProTruck Electric Off-Road 499 02-10-2009 07:16 PM
Tools necesary to build a kit kookiemonster Electric Off-Road 8 04-27-2008 12:05 PM
ROAR B/L motor Rules debate thread C_O_jones Electric On-Road 1080 01-21-2008 08:00 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 01:32 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net