Interstate battery onyone?
Thread Starter
Pro
Joined: Sep 2013
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Interstate battery onyone?
I'm looking to replace my Mega-tron II
was looking at the mtp-75 for around $135
or the AGM mt7-78 for $260 something.
Neither one has the 120 reserve capacity. Is this really recommended-needed for my car?
700hp rear wheel supercharged, no big power stereo or anything.
2001 Z06
was looking at the mtp-75 for around $135
or the AGM mt7-78 for $260 something.
Neither one has the 120 reserve capacity. Is this really recommended-needed for my car?
700hp rear wheel supercharged, no big power stereo or anything.
2001 Z06
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The RC rating is to allow the car to sit IDLE for a period of time and still start. If, you drive it frequently and don't let it sit for long periods of time, you should be fine.
The lower the RC the faster the battery will deplete with the battery just sitting and car not being driven.
Your car has a CONSTANT 25-30 milliamp current draw when it goes into the SLEEP /SECURITY MODE.
Bill
The lower the RC the faster the battery will deplete with the battery just sitting and car not being driven.
Your car has a CONSTANT 25-30 milliamp current draw when it goes into the SLEEP /SECURITY MODE.
Bill
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I am on my 3rd one in my C5....had them all replaced under warranty...first 2 had cells go bad the warranty is good 
the first one lasted the longest....the WalMart battery that came in my Jeep held up better all things being equal...
so....if you buy one keep your receipt handy
FWIW the last 2 Optimas we had were also replaced under warranty in a different C5
and yes....if you let it sit a while between drives it will discharge quite a bit....C5's are worse than the C6's in this regard
the first one lasted the longest....the WalMart battery that came in my Jeep held up better all things being equal...so....if you buy one keep your receipt handy
FWIW the last 2 Optimas we had were also replaced under warranty in a different C5
and yes....if you let it sit a while between drives it will discharge quite a bit....C5's are worse than the C6's in this regard
Last edited by pewter99; Apr 4, 2016 at 07:06 PM.
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
I have an Interstate in my rider. Talk about parking your vehicle for a long period; I park it in October and cut my lawn last weekend for the first time this year. Sat all winter covered by a tarp, started instantly (three years it's done this). OK, no draw to speak of, but still pretty impressive.
If they had a 120RC battery I'd buy it, as I am looking to replace my 2 year old Delco "just because" (want to bump up to 120RC from 95 IIRC).
If they had a 120RC battery I'd buy it, as I am looking to replace my 2 year old Delco "just because" (want to bump up to 120RC from 95 IIRC).
Last edited by grantv; Apr 4, 2016 at 08:30 PM.
Thread Starter
Pro
Joined: Sep 2013
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Can i get by with the mtp-75(110RC)? $134
or do i need to go with the mt7-78 agm(125RC) $262?
Almost double for the AGM. I do like the handle on it, As i like to take it out in the winter.
or do i need to go with the mt7-78 agm(125RC) $262?
Almost double for the AGM. I do like the handle on it, As i like to take it out in the winter.
Last edited by grassblaster; Apr 4, 2016 at 09:34 PM.
Burning Brakes
Joined: Nov 2011
Posts: 1,037
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A car battery is very heavy, and I was impressed with the convenience.
Thread Starter
Pro
Joined: Sep 2013
Posts: 512
Likes: 10
this one? hmm not sure i trust this. if i have a problem with it.....its a problem!
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Burning Brakes
Joined: Nov 2011
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Amazon.com: ACDelco 78AGM Professional AGM Automotive BCI Group 78 Battery: Automotive
this one? hmm not sure i trust this. if i have a problem with it.....its a problem!
this one? hmm not sure i trust this. if i have a problem with it.....its a problem!
Good luck
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
Like Bill posted, if you drive the car or use a tender then it doesn't matter. The RC is so the car can sit for weeks on end and still start. The 95RC might allow you 4 weeks of sitting vs the 120RC getting you 5 weeks of sitting.
If you get a normal battery then spend $5 and get an acid mat to put under it.
If you get a normal battery then spend $5 and get an acid mat to put under it.
Le Mans Master
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
Your profile doesn't show where you are, but if you are near a Farm & Fleet store they have a Duralast AGM battery in a 78 size that is about $125 and has a RC of 120.
I have been running this in my '99 for several years. I bought it because it was an AGM with good RC and a good price.
Good luck.
I have been running this in my '99 for several years. I bought it because it was an AGM with good RC and a good price.
Good luck.
Team Owner
Joined: May 2001
Posts: 87,361
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From: Western NY
Amazon.com: ACDelco 78AGM Professional AGM Automotive BCI Group 78 Battery: Automotive
this one? hmm not sure i trust this. if i have a problem with it.....its a problem!
this one? hmm not sure i trust this. if i have a problem with it.....its a problem!
I certainly buy a LOT of items through internet sellers, but a car battery, at least one for a daily driven car, is something I wouldn't. Granted, most batteries don't simply give up, they go away gradually. But if they do crap out without warning , and they have a warranty attached to them, you want to be able to get the problem resolved, and be back on the road ASAP. Only a local outlet can do that for you.
Something else to consider, especially if you have a tendency to travel. You buy a replacement battery from a "parts store" for instance, or even a large retailer like WallyWorld. You on vacation, 400 miles from home, and the battery dies. There's usually a local Advance Auto, Auto Zone, NAPA, somewhat nearby. Amazon, not too likely.......
Burning Brakes
Joined: Nov 2011
Posts: 1,037
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leadfoot4 - you make a good point; if a battery craps on me when out of town I guess I go buy a new one for full-price at a national chain place. It becomes a part of the cost of the trip. About the same price as another night in hotel.
Team Owner
Joined: May 2001
Posts: 87,361
Likes: 1,592
From: Western NY
Just to clarify as well as expand a little, on what I meant, but didn't fully explain.....
If you get a battery from a "brick and mortar" chain store, such as Advance Auto, AZ, NAPA, etc, and your battery that's still warranteed dies, while on a trip, you can get the "pro-rated exchange", as well as an installation, in almost any town of reasonable size, in America.
