Light weight battery talk. Good reading and info inside.

http://www.stealth316.com/2-dynabatt.htm

Now, do these batteries look familiar? A Dynabatt (sold at thunderracing.com) and Reactor (seen in summit). All re-labeled and sold at 2-3 times the price.

Dynabatt (http://www.gotbatteries.com/Productpage.asp?ProductNum=0769%2D2007&AddOn01=010310&AddOn02=PSC%2D122000A&AddOn03=PSC%2D124000A&AddOn04=PSC%2D124000AP&AddOn05=)

Reactor (http://www.gotbatteries.com/Productpage.asp?ProductNum=PS%2D12180&AddOn01=PSC%2D122000A&AddOn02=&AddOn03=&AddOn04=&AddOn05=)
stats on this battery (http://www.power-sonic.com/ps-12180.pdf)

Would 180 Amps be too much for starting our motors?

These batteries are very light, but are they suitable for a daily driver?

Interesting post.

I wonder how usefull a Genisis or Odesey battery would be in a dialy driver in cold climates mounted in the truck. The Odesey looks like a good choice for that, and taking 45lbs off the front end of the car and placing 26lbs in the rear sounds like a good idea to me.

Bret

See what you guys think of this
www.batcap.net
I'm still deciding if its a scam

Originally posted by Rob94hawk


Dynabatt (http://www.gotbatteries.com/Productpage.asp?ProductNum=0769%2D2007&AddOn01=010310&AddOn02=PSC%2D122000A&AddOn03=PSC%2D124000A&AddOn04=PSC%2D124000AP&AddOn05=)



Gee, doesn't this look familiar. Click on the Batcap 800 at www.batcap.net

Under normal street driving, lights on, radio, etc., how many amps do you need continually?

And how many amps do you need for the starter? The batcap 400 has 400 cold peak starting amps for 8 seconds. And at 5 pounds I guess you can use it for a weekend warrior type thing.

This has been discussed a lot at ls1tech.com.. search "hawker" or "dynabatt" there and you will see. I think the consensus is that they are fine for daily driving just don't leave your stereo or bottle heater on with the car off.

I've got the Hawker Genesis (13.5 lbs)in my car. I've had it for about 8 months with no problems. Of course you won't sit listening to the radio long with the engine off and still expect it to crank. :alert:

Originally posted by Camaro SS
I've got the Hawker Genesis (13.5 lbs)in my car.

How do you connect the battery terminals with that battery? And what speaker system do you have? 10 speaker, 1SC package? Thanx

Well, the Hawker Genesis has gave up on me. It will not hold a charge for more than 48 hours. It has lasted 1.5 years. I called Hawker and spoke with them about the short life of the battery. They told me that the Genesis is not designed for automotive use. The Odyssey version is the one built for automotive use to withstand heat and vibration. I just got the Odyssey version in today. It is the exact same size and weight as the Genesis 16. (13.5 lbs.). The only visual difference is that the Odyssey battery is red compared to black of the Genesis. Also, the Genesis only has a 12 month warranty. The Odyssey has a 36 month warranty when used in automotive applications. For the weight savings, this is a worthwhile mod. Of course you won't be able to run a big stereo or play your stereo with the engine off for extended periods. Up until this battery when bad this week, I've had no cranking on voltage problems whatsoever.

camaro ss, is yours mounted in the back or front?

why not just use it for track use only? swap them the out when the time comes. I would not trust such a small battery to be used as a daily driver. No way would it work here in this cold weather we have been seeing in New England. at least its 15f now, instead of 0-5 plus the windsheild.

Up Front.......

So is the odyssey good enough to start a hi compression (12:1) LT1 mounted in the back of the vehicle?


____________________
Rob
1994 Firehawk#319 (slightly modified)
11.83@120.61
MODLIST (http://www.robshawk.com/MODLIST.txt)
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2002 Trailblazer (http://www.RobsHawk.com/Trailblazer/TrailblazerSm3.jpg)
www.SDFB.org (http://www.sdfb.org)
"Garp bit Bonky"

Rob, why would you want to put a battery like that all the way in the rear? There's really not enough weight for it to matter if it's in the front or rear of the car. It's so small that even if you wanted to fit something in that space you could probably make room for it and the battery under the hood. Plus you don't have a normal LT1 airbox so you have lots of extra room under the hood.

I guess it might be possible to start the car with a little battery back there, but you would have to have really big wiring and make sure all the connections were terminated really well and in as few places as possible to reduce any resistance in the wiring. The required on/off switch wouldn't help either. I sure wouldn't want to rely on a car with the battery in the trunk and a battery that tiny. I think the bonus of a small battery like this is that you don't need to add all the extra weight (weigh 20ft of 1/0 cable if you get bored :eek: ) associated with moving the battery and you pull a lot of weight off the front of the car.

But.. when I did have the battery in the trunk of my car I used the smallest, cheapest battery available at walmart ($20) and it started the car fine though, even with some VERY questionable (read: it was pathetic) wiring from the previous owner of the car. I put the battery back up in the front of the car and don't plan on ever moving it again.

EDIT: The CCA on the hawker appears to be 280 CCA. I wouldn't put it in the back and expect it to start a 12:1 motor.. maybe my 9:1 monster but not yours. ;) Just buy one, try it and if it doesn't work I'll give you $50 for it. ;) ;)

Originally posted by Rob(94Hawk#319)
So is the odyssey good enough to start a hi compression (12:1) LT1 mounted in the back of the vehicle?

the Hawker started mine. I just tested it at home and haven't tried it for a day of racing. I made sure it had a full charge and it cranked my car over great.


____________________


the Hawker started mine. I just tested it at home and haven't tried it for a day of racing. I made sure it had a full charge and it cranked my car over great.

Originally posted by aram
....

Good reply A-ram, but I'm actually putting the battery in place of the rear passenger side seat, I want to try and keep everything I add between the axle centerlines for better balance, weight distribution (road racing, etc...), so that's really the reason I was asking.

Thanks 95bird, that's good to hear!

I just think drag racing.. but does moving 13#'s around really matter that much for weight distrubution to spend the time/money to relocate it? If you are adding another extra 10-15#s in cable and boxes to move it you may make the distrubtion better but the car is also getting heavier overall. You could probably choose a battery that weighs less than stock but not as little as the 13# hawker if you really want to move it and it would probably start fine without every worrying about it and still add some weight in the middle/rear of the car if you like moving stuff so much Robert-o. :D

Or just keep a light battery up front and move the coolant overflow bottle inside the car. :p

How would these compare with the Optima batteries? I assume they are a little lighter but would an Optima be a better choice for a street car?

Optima batteries are not particularly light. The "redtop" units in my drag car are about 42 pounds each, installed. I use two of these batteries in the back of the car with no alternator. They power all systems including the ignition, Holley Commander 950, Product Engineering fuel pump, RacePak data logger, Meziere water pump, (on the return road) a single electric fan and, even a tail light at night. I typically recharge the batteries between rounds but I would not be worried about hitting them for up to three consecutive runs without a charge. They might go longer but I don't like to live on the edge.

so has anyone used the dyna-batt for a long time ?

Originally posted by aram
(weigh 20ft of 1/0 cable if you get bored :eek: )

Doesnt weigh that much. 8 pounds or so.

Originally posted by Serene
Doesnt weigh that much. 8 pounds or so.

Thats a lot to me!! :) Add in the battery box (1-2#s) too and all the other misc parts and it's well over 10#'s added to the car.

Originally posted by aram
Thats a lot to me!! :) Add in the battery box (1-2#s) too and all the other misc parts and it's well over 10#'s added to the car.

Didn't think you needed to have a battery box with a dry cell battery.

Plus, it's not about adding the weight (friggin EE's!) but where you add the weight.