Replacement battery sizes
#26
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Originally Posted by Gomez
Bean, I'm not sure I'd be too worried about creeping over the white line with your replacement battery. In your cooler climate the underhood temps aren't going to be sky high. You're not going to be affecting your warranty either.....
Gomez.
Gomez.
I noticed the 75/35 instal in the dyi thread uses the optima height adapter.
This adapter lifts the battery along its perimeter and is hollow in the middles, so even thought the battery will physically cover the vent hole it would be still be able to flow under the battery. Right?
#27
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Originally Posted by bean438
It isnt -40 celsius all year round where I live, so in the summer I would be concerned about the heat.
I noticed the 75/35 instal in the dyi thread uses the optima height adapter.
This adapter lifts the battery along its perimeter and is hollow in the middles, so even thought the battery will physically cover the vent hole it would be still be able to flow under the battery. Right?
I noticed the 75/35 instal in the dyi thread uses the optima height adapter.
This adapter lifts the battery along its perimeter and is hollow in the middles, so even thought the battery will physically cover the vent hole it would be still be able to flow under the battery. Right?
I naively thought your summers would be a little cooler than they actually are. I was surprised to discover your mean July maximum temp was around 26 deg C. I learnt something today, so it's been a good day!
Gomez.
#28
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The red top Optima 35 is 33 pounds, the yellow top 37.2.
http://www.1st-optima-batteries.com/
How does that compare to the new Mazda recommended battery?
http://www.1st-optima-batteries.com/
How does that compare to the new Mazda recommended battery?
#29
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Originally Posted by mitchfried
The red top Optima 35 is 33 pounds, the yellow top 37.2.
http://www.1st-optima-batteries.com/
How does that compare to the new Mazda recommended battery?
http://www.1st-optima-batteries.com/
How does that compare to the new Mazda recommended battery?
MT-35, 550CCA-37 lbs
MTP-35, 640CCA-40 lbs
#30
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I installed the 51R yellow top Optima and it was a piece of cake. It only weighs 26lbs or so and is a full 2 inches smaller side to side (when looking at it mounted in the car). So, it has lots of extra room for air circulation, is lighter and is the same height and length as the stocker so you can use the OEM mounting hardware.
Chris....
Chris....
#32
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Replacement Battery Update
Received the following from Trussville today:
"I have the answer, Interstate has sent us the MT-35 Batteries by mistake and will be picking them up and replacing them with the MTP-35"
See p.2, post #22 in this thread for the specs on these batteries.
"I have the answer, Interstate has sent us the MT-35 Batteries by mistake and will be picking them up and replacing them with the MTP-35"
See p.2, post #22 in this thread for the specs on these batteries.
#33
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I just got my optima 35 installed by Batteries Plus. I will post a pic when i get home and sych up my camera. Install was simple and there is plenty of room for air circulation. $99 + tax. I'm happy now.
FYI. The dealer tested my stock battery last week, 305CCA was measured.
FYI. The dealer tested my stock battery last week, 305CCA was measured.
#34
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Originally Posted by Go48
The "new" replacement battery for the RX-8 is rated at 640CCA versus the 300+CCA original battery. Might want to look into that instead of an Optima. Have read mixed reviews of the Optima from various sources and on various forums.
#35
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Originally Posted by Go48
Received the following from Trussville today:
"I have the answer, Interstate has sent us the MT-35 Batteries by mistake and will be picking them up and replacing them with the MTP-35"
See p.2, post #22 in this thread for the specs on these batteries.
"I have the answer, Interstate has sent us the MT-35 Batteries by mistake and will be picking them up and replacing them with the MTP-35"
See p.2, post #22 in this thread for the specs on these batteries.
#36
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Originally Posted by RX-Nut
Ah so, the new OEM batt is actually an Interstate MTP-35 then, correct?
#37
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Originally Posted by V_for_velocity
My OEM battery is 490 CCA. Maybe it's a Canadian thing?
#39
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Dang..
Off the Interstate site:
This is one of the most powerful batteries in the industry, with one of the longest warranties in the business. With Silver Calcium alloy, it has 22% more life! With up to 800 cold cranking amps and a guaranteed warranty.......
Cranking Amps: 800
Cold Cranking Amps: 640
Why would the RX-8 need such a beast? Just curious.
Off the Interstate site:
This is one of the most powerful batteries in the industry, with one of the longest warranties in the business. With Silver Calcium alloy, it has 22% more life! With up to 800 cold cranking amps and a guaranteed warranty.......
Cranking Amps: 800
Cold Cranking Amps: 640
Why would the RX-8 need such a beast? Just curious.
#40
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Originally Posted by RX-Nut
.........Why would the RX-8 need such a beast? Just curious.
Damn, I'm itching to buy a new battery, but my stock battery is working so well, I cannot justify it .
#41
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Originally Posted by RX-Nut
Dang..
Off the Interstate site:
This is one of the most powerful batteries in the industry, with one of the longest warranties in the business. With Silver Calcium alloy, it has 22% more life! With up to 800 cold cranking amps and a guaranteed warranty.......
Cranking Amps: 800
Cold Cranking Amps: 640
Why would the RX-8 need such a beast? Just curious.
Off the Interstate site:
This is one of the most powerful batteries in the industry, with one of the longest warranties in the business. With Silver Calcium alloy, it has 22% more life! With up to 800 cold cranking amps and a guaranteed warranty.......
Cranking Amps: 800
Cold Cranking Amps: 640
Why would the RX-8 need such a beast? Just curious.
However, it gets pretty cold south of the border from time to time as well. I guess Mazda didn't know that so they gave the US cars a battery that is somewhat inadequate, particularly in some hard-start situations. If your US car floods, or is otherwise hard starting in cold temps, the battery may run down before you get more than a couple of 7-8-second cranks to start the car. So then it's off to the dealer for service, when you might have been able to start the car with a few more cranking opportunities.
Personally, I think Mazda would be smart to replace the original OEM batteries with a more capable model like the MTP-35 and possibly avoiding some of the trips to their dealers for non-starting problems.
#43
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Originally Posted by salituro64
Isn't too much cranking amps detrimental to what an engine was designed for? Can't it cause damage?
#44
A nice step up!!!
No, too many CCA can't hurt the car. It's just there if you need it. Like horsepower, if you never ask for it you will never get it.
QUESTION ???
Does anybody know how many Amp-Hours the new 0000-80-MT35-WB Mazda recommended replacement battery is? The owners manual only gives the AH spec on the current battery and the TSB gives the new CCA rating but I haven't seen the new AH rating. In other words, It should crank better cold but will it sit in my driveway between snow storms and still start after a few weeks. My current one doesn't.
QUESTION ???
Does anybody know how many Amp-Hours the new 0000-80-MT35-WB Mazda recommended replacement battery is? The owners manual only gives the AH spec on the current battery and the TSB gives the new CCA rating but I haven't seen the new AH rating. In other words, It should crank better cold but will it sit in my driveway between snow storms and still start after a few weeks. My current one doesn't.
#45
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Originally Posted by MX6_2_RX8
No, too many CCA can't hurt the car. It's just there if you need it. Like horsepower, if you never ask for it you will never get it.
QUESTION ???
Does anybody know how many Amp-Hours the new 0000-80-MT35-WB Mazda recommended replacement battery is? The owners manual only gives the AH spec on the current battery and the TSB gives the new CCA rating but I haven't seen the new AH rating. In other words, It should crank better cold but will it sit in my driveway between snow storms and still start after a few weeks. My current one doesn't.
QUESTION ???
Does anybody know how many Amp-Hours the new 0000-80-MT35-WB Mazda recommended replacement battery is? The owners manual only gives the AH spec on the current battery and the TSB gives the new CCA rating but I haven't seen the new AH rating. In other words, It should crank better cold but will it sit in my driveway between snow storms and still start after a few weeks. My current one doesn't.
#46
A nice step up!!!
Good to know that it is an interstate. I have used their Megatron batteries before and they are good.
In another part of their site I found the Reserve Capacity rating of 100.
http://www.ibsa.com/www_2001/content...oduct_auto.asp
From another battery site I got this:
To convert Reserve Capacity (RC) to Ampere-Hours at the 25 amp rate, multiple RC by .4167. More ampere-hours (or RC) are better in every case.
http://www.pacificpowerbatteries.com...AQ/dcfaq4.html
Which brings us to 100*.4167 = 41.67AH. which makes it the worst one yet. However this is at the 25A rate so it really doesn't mean much other than it is close. If anybody knows what the RC of the original battery is then we could compare apples to apples instead of apples to snails.
The part number actually looks like it is an MT-35 not the MTP-35 but then the CCA wouldn't be right in their chart.
I guess I'll wait to see if you get an email.
In another part of their site I found the Reserve Capacity rating of 100.
http://www.ibsa.com/www_2001/content...oduct_auto.asp
From another battery site I got this:
To convert Reserve Capacity (RC) to Ampere-Hours at the 25 amp rate, multiple RC by .4167. More ampere-hours (or RC) are better in every case.
http://www.pacificpowerbatteries.com...AQ/dcfaq4.html
Which brings us to 100*.4167 = 41.67AH. which makes it the worst one yet. However this is at the 25A rate so it really doesn't mean much other than it is close. If anybody knows what the RC of the original battery is then we could compare apples to apples instead of apples to snails.
The part number actually looks like it is an MT-35 not the MTP-35 but then the CCA wouldn't be right in their chart.
I guess I'll wait to see if you get an email.
#48
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[QUOTE=MX6_2_RX8]
Oh, that was me emailing them. I'll try. Do you know if it is the MT or the MTP. I'll ask for both.
Read the entire thread (is that RTFT? ) and you will find the answer to your questions. It IS the MTP-35 as verified by Trussville Mazda.
Originally Posted by Go48You could try e-mailing them.[/QUOTE
Oh, that was me emailing them. I'll try. Do you know if it is the MT or the MTP. I'll ask for both.
#49
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Originally Posted by MX6_2_RX8
Which brings us to 100*.4167 = 41.67AH. which makes it the worst one yet. However this is at the 25A rate so it really doesn't mean much other than it is close. If anybody knows what the RC of the original battery is then we could compare apples to apples instead of apples to snails.
EDIT: The RC rate for the Yuasa 50D20L battery, which I assume most US cars have, is 78 min, so the MTP-35 is apparently a bit better in that department as well.
Last edited by Go48; 01-26-2005 at 10:31 AM.
#50
A nice step up!!!
Originally Posted by Go48
Read the entire thread (is that RTFT? ) and you will find the answer to your questions. It IS the MTP-35 as verified by Trussville Mazda.
Here's what I got from interstate.
" Thank you for contacting Interstate Batteries. These batteries are not rated or tested for amp hours. However, the old rule of thumb used to be that RC X .6 = amp hours. So you could assume that these batteries are close to 60 amp hours."
In any case, I agree if you are paying for it get the MTP-35. If Mazda is picking up the tab the MT-35 should be fine. I'm in the latter camp I hope.