TeamSwift
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Racing battery
http://www.teamswift.net/viewtopic.php?f=4&t=50540
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Author:  Rallyswift [ Mon Mar 28, 2011 1:03 pm ]
Post subject:  Racing battery

I've seen a few folks in CR using a small battery in their cars. Anyone any info on these batteries?

Author:  ROV [ Mon Mar 28, 2011 1:53 pm ]
Post subject:  Re: Racing battery

probably a deep cycle high discharge current batt specially made for race cars.
:)
they cost something like 200 or 300 eur.
You can buy a daewoo tico battery , wich is the lightest i have found.

Author:  suprf1y [ Mon Mar 28, 2011 2:00 pm ]
Post subject:  Re: Racing battery

Research here

http://www.turntechbattery.com/TurnTech ... lcome.html

Buy here

http://stores.ebay.ca/OMG-Battery/_i.ht ... 581&_pgn=2

Tell him your application. He does custom stuff.
In a warm climate, his biggest should be more than enough for your car.

Author:  Rallyswift [ Mon Mar 28, 2011 2:05 pm ]
Post subject:  Re: Racing battery

Thanks. I thinking to run the race battery for the rallies and use the regular one for the road. These look to be dry cell batteries which means I should be able to carry it in my check in bags?

Author:  nzswift [ Mon Mar 28, 2011 6:36 pm ]
Post subject:  Re: Racing battery

Dattman made a super small battery from a cordless drill. Worth a PM...

Author:  Dattman [ Mon Mar 28, 2011 6:46 pm ]
Post subject:  Re: Racing battery

The A123 cells are excellent, they will deliver about 70amps if needed, 4 of them is just under 14v so thats why there are 4,8,12 cell packs available, Dewalt use the same cells in their 28 & 36v battery packs, I modified mine into an 8 cell unit which gives 140 cranking amp capacity, spins the engine over much faster than my old 12v 18ah.
Attachment:
Dewalt Batt.jpg
Dewalt Batt.jpg [ 86.97 KIB | Viewed 5694 times ]


Sure get some funny looks at the track, battery only weighs 0.6kgs so I saved about 5kgs over my previous lightweight setup.

For rallying I would recommend the 12 cell unit, with intercoms, rally computer and other electrical stuff you will need a bit more capcity than a circuit racer

Author:  87octane [ Mon Mar 28, 2011 11:21 pm ]
Post subject:  Re: Racing battery

Odessy 680. Real 12v car racing battery. Tiny. Light. Buck and a quarter.

Author:  Dattman [ Tue Mar 29, 2011 1:54 am ]
Post subject:  Re: Racing battery

87octane wrote:
Odessy 680. Real 12v car racing battery. Tiny. Light. Buck and a quarter.


The Odyssey is a great battery if you need the capacity but at 15lbs, it's TEN times heavier than my 1.5 lb 8 cell LiPo battery and the Odyssey costs more...

Author:  Terke [ Tue Mar 29, 2011 2:37 am ]
Post subject:  Re: Racing battery

Anyone have a look at the Shorai batteries? http://www.shoraipower.com/

Looks like some pretty impressive numbers.

Author:  crnolic [ Tue Mar 29, 2011 5:46 am ]
Post subject:  Re: Racing battery

what about the 12v 7.2Ah alarm/ups batteries?

Author:  FlyingGrape [ Tue Mar 29, 2011 5:59 am ]
Post subject:  Re: Racing battery

This is the one I look at thinking "hmmm...if I only had the cash!"

http://www.braillebattery.com/index.php ... ies/ml14c/

I like your idea dattman. Will be looking into that one!

Author:  Rallyswift [ Tue Mar 29, 2011 1:24 pm ]
Post subject:  Re: Racing battery

Dattman,

How would I rig that battery up and would it last all day for the rally with my radiator fan, wiper, lights etc running? The alternator would be working overtime! They the Odessy battery is available here but at $234 plus it weighs 15lbs....no thanks.

Author:  Dattman [ Wed Mar 30, 2011 2:08 am ]
Post subject:  Re: Racing battery

crnolic wrote:
what about the 12v 7.2Ah alarm/ups batteries?

Neither deliver enough current, the thinner they make the lead plates inside the more current it can deliver but the trade off is less total capacity, alarm batteries are designed for low current draw, ie less than 10 amps, UPS versions have higher current deliveries but usually still less than 20amps, yes they can start your car, JUST! I have started my work car off them many times but you only get one chance and turns over VERY slowly, in comparison my modified Dewalt battery can deliver 140amps for cranking.


Rallyswift wrote:
Dattman,

How would I rig that battery up and would it last all day for the rally with my radiator fan, wiper, lights etc running? The alternator would be working overtime! They the Odessy battery is available here but at $234 plus it weighs 15lbs....no thanks.


The problem with a lot of competition cars is actually over charging, since your engine is spending long periods revving at max rpm, you really should have an underdrive pulley to slow down both the alternator and water pump to prevent cavitation.

These super small batteries don't have a lot of capacity so as long as your car is running then you won't have a problem, unless you switch on 1000watts of spotlights :mrgreen:

I would recommend either a 12cell lithium pack or Odyssey for rallying.

Author:  blake [ Wed Mar 30, 2011 6:42 am ]
Post subject:  Re: Racing battery

I've had great service from Varley Redtop, never let me down in over 6 years with car sitting for long periods between use. Probably doesn't beat Dattman for the ultimate weight saving though...

Author:  Rallyswift [ Wed Mar 30, 2011 9:20 am ]
Post subject:  Re: Racing battery

Cheers Dattman,

Take a look on Ebay when you can and search the tons of Odyssey there and let me know which one would work.

Thanks

Author:  swiftmotorsport [ Wed Mar 30, 2011 1:07 pm ]
Post subject:  Re: Racing battery

Hi Chris,
I run the equivalent of an Odyssey 30 in my rally car and have had no issues with it what so ever, however it was supplied by a company called Groves Batteries in Cheltenham (trade outlet that supply batteries from golf carts to military hardware) and is their own battery, and is considerably cheaper than either Varley or Odyssey, I paid £100 inc taxes.
Maybe get your Mum to bring it over next time she comes to visit :lol: .
Regards
Andy.

Author:  Rallyswift [ Wed Mar 30, 2011 2:08 pm ]
Post subject:  Re: Racing battery

hahaha yes my Mum can bring it!! Actually I'm going to look in CR we have battery suppliers to our company. I did check the Odyssey 30 battery on Ebay and they are around the same price as the one they are selling in CR. I a cheap skate so I can't afford $234. I'm on a mission to lose 100KG as the car weighs around 995kgs at present and my weight for the class is 850kgs.

Dattmans battery looks a good solution.

Author:  suprf1y [ Wed Mar 30, 2011 4:02 pm ]
Post subject:  Re: Racing battery

The ones I posted that are on ebay are also A123 cells.

I have one for my bike, and plan to put one in my Swift when I start driving it again.
I'll mount it on the firewall, just above the starter.
At less than 2 lbs, I'll take almost 30 lbs off the front of the car.

Author:  Dattman [ Wed Mar 30, 2011 6:35 pm ]
Post subject:  Re: Racing battery

suprf1y wrote:
The ones I posted that are on ebay are also A123 cells.

I have one for my bike, and plan to put one in my Swift when I start driving it again.
I'll mount it on the firewall, just above the starter.
At less than 2 lbs, I'll take almost 30 lbs off the front of the car.


I agree, the A123 LiPo batteries are so rediculously light you can mount them anywhere and the closer you can get them to either the starter motor or Battery Isolation switch (for a competition car) then the more efficient they become and the more weight you can save.

It's cheaper to buy the Lipo packs premade up with either bullet connectors or plugs than to modify a Dewalt battery like I have, the dewalt batteries have a large electronic control module inside which limit's the current to 25amps, it's a bit of a waste to take it apart and throw it away, my line of thinking is the cells are already mounted into a 'box' so was easier to fix to the car to keep the scrutineers happy, otherwise you just need to buy a plastic box with a flip top lid to mount the cells inside.

Chris the Odyssey extreme 20 would be fine, as Blake also mentioned the Varley Redtops are very good as well, a lot of it comes down to where it's mounted and wired.

Author:  PBC137 [ Thu Apr 21, 2011 2:01 pm ]
Post subject:  Re: Racing battery

FlyingGrape wrote:
This is the one I look at thinking "hmmm...if I only had the cash!"

http://www.braillebattery.com/index.php ... ies/ml14c/

I like your idea dattman. Will be looking into that one!


^^^braille batteries are the way of the future in motor racing.

Author:  swiftmotorsport [ Thu Apr 21, 2011 2:29 pm ]
Post subject:  Re: Racing battery

PBC137 wrote:
FlyingGrape wrote:
This is the one I look at thinking "hmmm...if I only had the cash!"

http://www.braillebattery.com/index.php ... ies/ml14c/

I like your idea dattman. Will be looking into that one!


^^^braille batteries are the way of the future in motor racing.


Mmmmm, looked promising until I saw the price! :shock:

Author:  Mcmancuso [ Thu Apr 21, 2011 2:44 pm ]
Post subject:  Re: Racing battery

what kind of charging circuitry are you using with the LiPo packs? Charging directly from the alternator is a good recipe for an explosion!

Author:  Terke [ Thu Apr 21, 2011 2:48 pm ]
Post subject:  Re: Racing battery

Looks like Shorai batteries are the smaller versions of the Braille batteries. Lower specs as well, but then most of the time you don't need a 42amp-hr battery anyway.

Author:  suprf1y [ Thu Apr 21, 2011 5:53 pm ]
Post subject:  Re: Racing battery

Mcmancuso wrote:
what kind of charging circuitry are you using with the LiPo packs? Charging directly from the alternator is a good recipe for an explosion!

Apparently not.

That's how everybody runs them.

Author:  t3 ragtop [ Thu Apr 21, 2011 6:33 pm ]
Post subject:  Re: Racing battery

my subwoofer would hit 2 low notes and those little batteries would vaporize. :twisted:

i guess that race cars are for wealthy, single guys who are full of youthful exuberance. =)

honestly, super battery or not, i'd find it amazing if those would start a well worn 3 banger in an ohio winter. maybe a 5 second crank on a well tuned engine on a temperate day would work out okay, but sustained operation with lights, heater blower, radio, and windshield wipers would fast become a problem.

only for race cars, i guess. :D

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