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Old 04-10-2002, 07:11 PM   #1
subyguy2
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Question Has anyone tired the Dynabatt 13.5lb Dry Cell Battery?

I want to start removing some serious weight from my car (allready 78lbs under stock) and was wondering how well this battery works? Can I leave my car for extended periods or time, can I mount it in the trunk? And will it hold up in the winter?
Thanks.

Chris.
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Old 04-11-2002, 12:01 PM   #2
Warp3
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Thumbs up

I've not tried the Dynabat but I have the 12lb Hawker Odyssey PC545 in my 99 2.5RS. Some guy was selling some on eBay (goes by the userid vtwinparts) for much less than they normally go for (I paid $89 shipped). They are designed to be used in large motorcycle (like the Harley Sportster).

I've had no problem starting the car with it yet (even on relatively cold mornings).

Installing it was a bit exciting since it does not use SAE posts (it has 6mm bolts instead). However, the higher amperage models (PC680 and higher) can be ordered with SAE posts.

The positive terminal (at least on my 99 2.5RS) is already adapted from ring type connectors to SAE posts anyway so attaching those was pretty easy (remove the adaptor and bolt the two wires up to the positive terminal). As for the negative terminal, I just turned it sideways and bolted it down through the hole you tighten the stock terminal connector with. Also the stock J bolts (on the battery tie down) are not threaded far enough to hold down the PC545, so I picked up a set of J bolts from AutoZone (under $2) that were threaded much farther down, and just cut the excess length of rod off the top after securing it.

At first I was a bit worried about the lower amperage until I read the owner's manual and found that the rating on the stock battery in a 2.5RS with manual transmission is only 375CCA.

If I had to do it again, I'd buy the PC680 instead (has optional SAE terminals and higher amperage ratings and weighs only slightly more (about 15 lbs)) but I don't regret my purchase in the slightest.

Shane -- http://www.warpthree.com

Last edited by Warp3; 04-12-2002 at 01:19 PM.
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Old 04-11-2002, 12:41 PM   #3
KillerTHC
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how much does the stock battery or normal batteries weigh?
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Old 04-11-2002, 04:39 PM   #4
Warp3
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From what I've read the stock battery is 35-36lbs.

Shane -- http://www.warpthree.com
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Old 04-12-2002, 12:28 AM   #5
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who carries these batteries ?
did you have to order someplace special, or do normal garages carry them ?
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Old 04-12-2002, 01:08 PM   #6
Warp3
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The eBay seller I bought my Hawker Odyssey PC545 battery from has one on eBay right now for a "Buy It Now" price of $89 + $12 shipping. The seller's website (http://www.vtwinsolutions.com) sells them for $169.95 normally!

Here's the auction:
http://cgi.ebay.com/ebaymotors/ws/eb...664802&r=0&t=0

Shane -- http://www.warpthree.com
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Old 04-13-2002, 05:21 AM   #7
CosmoTheCat
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You'll probably not want one of these if you have an aftermarket stereo, or if you like to run the stereo for a while with the car turned off (like at a park or whatever).

But if you pick one up for saturday night drags and yank all the stereo stuff out for the strip it'd work great.
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Old 04-13-2002, 11:49 AM   #8
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Dude thats a motorcycle battery!

There is no way that has enough juice to run the car accesories.
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Old 04-13-2002, 01:05 PM   #9
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Quote:
Originally posted by jetfan8178
Dude thats a motorcycle battery!

There is no way that has enough juice to run the car accesories.
Yeah, I know (I even stated such in my first post...it's for a Harley Sportster 1200). But I've had zero problems with it yet. (Granted I haven't tried running any accessories for any length of time without the car started, but I don't usually do that much anyway.)

In fact, that's one reason I removed my GFB UD pulley kit. Even though the GFB kit has a smaller alternator pulley (for less underdriving of the alternator) I was getting headlight-dimming at idle, so I'm guessing it was relying on the battery to help out. Now that I'm back to the stock pulleys, the headlight dimming does not occur.

Again, without the engine running though you are completely under battery power and I wouldn't expect it to run nearly as long as the stock one but, for that matter, you could buy two and put them where the stock battery is (they will both fit side by side and still have room left over in the stock tray) and you are still only at 24lbs and have now gone to 1090 5-second Amps and 460CCA (the PC545 generates 230CCA). (NOTE: This configuration isn't legal in some SCCA classes (including STS) as you cannot run a different number of batteries than stock.)

Shane -- http://www.warpthree.com
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Old 04-14-2002, 04:55 PM   #10
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Default Re: Has anyone tired the Dynabatt 13.5lb Dry Cell Battery?

Quote:
Originally posted by subyguy2
I want to start removing some serious weight from my car (allready 78lbs under stock) .......

Chris.
What have you done to lighten the load???
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Old 04-15-2002, 01:13 AM   #11
Jonnathan
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easy weight savings...
remove spare wheel & jack, replace with can of fix-a-flat & AAA card. Remove all passenger floor mats. Remove carpets and particle board from trunk. Just those simple things add up to 40+ lbs
other easy ones.. but not so cheap, underdrive pulley, light wheels, racing seats



does anyone know where can I buy that dynabat battery from ?
do normal stores sell them or are they hard to find ?

also, does the factory battery holder plate&bolts hold the dyna-batt battery firmly ?

Last edited by Jonnathan; 04-15-2002 at 01:50 AM.
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Old 04-15-2002, 01:36 PM   #12
subyguy2
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Sparco EVOs-34lbs
Rear seat and lap belts-24lbs
Tein coil-overs-8lbs
TOYO FZ$ tire 205/50/16-8lbs
The thought that there is so much more I can do-priceless.


Chris.

PS. I figured the actual weights out, but Im not at home so those are rough estimates. (within a pound or so)
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Old 04-15-2002, 02:45 PM   #13
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I am using the next size up Odyssey Battery. PC625 still has screw post though. It's a little more powerful than Warpthree's. I got it from Batteries Plus for 80something dollars including tax and everthing.

I have noticed absolutely no electrical changes from stock. I have the Factory guage pod that includes amps so I monitor it pretty closely. Also Batteries Plus has a free 2year Non-prorate warantee on this Battery. The guy said If I killed it in any way in the next 2 years he'd give me a new one.

So here's another cheaper and Lighter option than the Dynabatt. BTW this battery is designed for the bigger Personal Water Craft.

Note: I DO NOT have an amp, but I do have an aftermarket head unit and speakers.

here are some specs: http://www.batterymart.com/odyssey_battery.asp

Last edited by skidplatez; 04-15-2002 at 02:50 PM.
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Old 04-18-2002, 12:00 PM   #14
Section 8
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Did you change the terminal wires? If not how did you choose to use the post terminal leads on the battery?


Greg
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Old 04-18-2002, 12:29 PM   #15
Warp3
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Quote:
Originally posted by Section 8
Did you change the terminal wires? If not how did you choose to use the post terminal leads on the battery?
Greg
Quote:
From my post above
The positive terminal (at least on my 99 2.5RS) is already adapted from ring type connectors to SAE posts anyway so attaching those was pretty easy (remove the adaptor and bolt the two wires up to the positive terminal). As for the negative terminal, I just turned it sideways and bolted it down through the hole you tighten the stock terminal connector with.
You are welcome.
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Old 04-18-2002, 12:31 PM   #16
skidplatez
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I changed my leads. But it sounds like Warp3s technique would be easier to do. : ) I went with Copper ring terminals instead.
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Old 04-18-2002, 11:48 PM   #17
RavenGTi
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i havent tried this yet, but these are miata batteries, they are OEM, sealed, and really light. $89 shipped. go here
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Old 04-19-2002, 10:02 AM   #18
skidplatez
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yeah but that weighs 25 lbs that's 10 lbs more than any of the batteries we are talking about.
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Old 04-19-2002, 06:55 PM   #19
RavenGTi
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oh, well its still light compared to my stock battery.
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