Thread Tools
Old Jul 12, 2012, 10:33 PM
sammmo00 is offline
Find More Posts by sammmo00
Do Work
Discussion

Battery questions about traxxas summit and team associated B4.1


Hello, i am going to buy a traxxas summit and was just wondering which lipo batteries i could put in it. First, does the c rating and second, how many cells (lipo) can i put in there?

My friend was also wondering the same for his team associated B4.1, as he was getting tired of his little NIMH battery. He wants to know the answers to the same questions i had.

Thanks
Sign up now
to remove ads between posts
Old Jul 13, 2012, 12:29 AM
imgumby is offline
Find More Posts by imgumby
Registered User
imgumby's Avatar
2 cells in the B4.1 max...any hard case pack should fit.Stay away from maxamps and their ridiculous claims and high prices

imgumby
Old Jul 13, 2012, 10:35 AM
wparsons is online now
Find More Posts by wparsons
Registered User
wparsons's Avatar
Get 30c-40c packs if you can, hobbypartz.com sells gensace hardcase packs for really reasonable pricing, and amainhobbies.com has their house brand of lipos for a good price too.

The higher the C rating the more current they can deliver, but also less voltage sag over the length of the run.
Old Jul 14, 2012, 12:33 AM
sammmo00 is offline
Find More Posts by sammmo00
Do Work
Thanks, and so basically the higher C = higher speed? And how many cells can the summit handle?
Old Jul 14, 2012, 07:33 PM
Creepy1 is offline
Find More Posts by Creepy1
Mother warned you about me!
Creepy1's Avatar
Quote:
Originally Posted by sammmo00 View Post
Thanks, and so basically the higher C = higher speed? And how many cells can the summit handle?
Summit can handle up to 2 x 8.4v NIMH batteries or 2 x 2s 7.4v LIPO batteries.

C rating stands for Constant. More C means a larger constant burst of power off the trigger. Hope that helps.
Old Jul 14, 2012, 10:33 PM
sammmo00 is offline
Find More Posts by sammmo00
Do Work
Thanks, so is there a limit of constant power an esc can handle?
Old Jul 14, 2012, 11:38 PM
Creepy1 is offline
Find More Posts by Creepy1
Mother warned you about me!
Creepy1's Avatar
Quote:
Originally Posted by sammmo00 View Post
Thanks, so is there a limit of constant power an esc can handle?
Not too sure on that one, but I'd stay around 40c.
Old Jul 15, 2012, 03:16 AM
traxx de maxx is offline
Find More Posts by traxx de maxx
Registered User
traxx de maxx's Avatar
it can handle what the stock motor can draw from the batteries, you only need 30-40C constant.
Volts give speed,
mah gives run time.
C rating gives safe discharge rate from the battery but works with mah to work out.(C rating you can't go too high, but you can go too low)
Old Jul 15, 2012, 11:13 AM
Creepy1 is offline
Find More Posts by Creepy1
Mother warned you about me!
Creepy1's Avatar
Quote:
Originally Posted by traxx de maxx View Post
it can handle what the stock motor can draw from the batteries, you only need 30-40C constant.
Volts give speed,
mah gives run time.
C rating gives safe discharge rate from the battery but works with mah to work out.(C rating you can't go too high, but you can go too low)
The formula is: (C x mAh) / 1000 = MaxAmps

Hope that helps everyone.
Old Jul 15, 2012, 06:02 PM
wparsons is online now
Find More Posts by wparsons
Registered User
wparsons's Avatar
Quote:
Originally Posted by sammmo00 View Post
Thanks, and so basically the higher C = higher speed? And how many cells can the summit handle?
Not really... but you will have more consistent power over the length of the run.

If your vehicle draws a max of 60a constant and you're running a 20c 5000mah pack, that's a 100a it can deliver. Moving to a higher C pack won't effect anything on a fresh pack because the lower C pack was well within the power requirements of the vehicle.

I only suggested going with 30c-40c packs because they're easy to find, and pretty cheap too.

That said, if your motor wants more amps than the pack can deliver happily, the pack won't just give the amps its rated for, it'll try to give the motor everything it wants, usually resulting in a damaged/puffed pack.
Old Jul 15, 2012, 10:56 PM
rustlererad3 is offline
Find More Posts by rustlererad3
Outdoor Extremist
rustlererad3's Avatar
Well done parsons
Old Jul 16, 2012, 12:06 AM
sammmo00 is offline
Find More Posts by sammmo00
Do Work
Ok i think ill just stick to 30-40c, but i just got my summit today, and the manual said to not put a lipo in the esc it has...?
Old Jul 16, 2012, 12:39 AM
Creepy1 is offline
Find More Posts by Creepy1
Mother warned you about me!
Creepy1's Avatar
Quote:
Originally Posted by sammmo00 View Post
Ok i think ill just stick to 30-40c, but i just got my summit today, and the manual said to not put a lipo in the esc it has...?
They mean that esc is the one that has no internal low voltage cutoff for lipos. Just add your own external one, and your good bud.
Old Jul 16, 2012, 01:18 AM
sammmo00 is offline
Find More Posts by sammmo00
Do Work
It says on the esc that it has low voltage detection, though. Maybe i read the manual wrong or was looking at a different esc
Old Jul 16, 2012, 09:48 AM
wparsons is online now
Find More Posts by wparsons
Registered User
wparsons's Avatar
There are two different ESC's that were used in the Summit. The older one doesn't have the LVC built in, but the newer one does.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question Team Associated B4.1 and B4 differences & Motor suggestions Bielzebub Off-road Cars 4 Jul 09, 2012 06:25 PM
Sold Team associated RC10 b4.1 brushless rtr in box 3 days old williebro Cars - Cars and Parts (FS/W) 4 Jun 29, 2012 12:21 AM
For Sale Team Associated RC8T, Traxxas summit, Losi XXX-4 boss70mstang Cars - Trucks and Parts (FS/W) 6 Apr 22, 2012 01:59 PM
Sold Team Associated B4.1 rocco987 Cars - Cars and Parts (FS/W) 4 Oct 30, 2011 03:13 AM
For Sale Team Associated B4.1 8mm Extended Worlds Chassis jolly01 Cars - Cars and Parts (FS/W) 0 Oct 22, 2011 10:55 PM