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<blockquote data-quote="TaylorFade" data-source="post: 7881081" data-attributes="member: 618111">First... the Kinetic doesn&#039;t say at what rate the Ah is. Amp hours are not a standard measurement and are sometimes quoted for a different rate. See how the DieHard is listed as a 20 hour rate? The Kinetic could be using a 12 hour rate (which is common to inflate the ratings). Not saying that&#039;s the case, but you have to look behind the numbers.Also, the DieHard lists cold cranking amps. The Kinetic lists cranking amps. There is a significant difference there which is why Kinetic only lists the higher one. &quot;Cold cranking amps&quot; is what the batt can discharge for 30 seconds at 0*F without falling below 7.2v. Cranking amps is the same test but at 32*F. The difference between the two is usually ~ 20%. The DieHard stil falls short, but if you look at the weights and footprints, the Kinetic looks to have ZERO structural reinforcement. You want that under your hood? They stuffed a ton of batt into a thin plastic box. Maybe great for a rear batt, but I&#039;ll take the DieHard with a 4 year replacement warranty for under the hood. And I&#039;d get a matching one or two while I was at it because I know who OEM&#039;s those Platinums.</blockquote>

[QUOTE="TaylorFade, post: 7881081, member: 618111"] First... the Kinetic doesn't say at what rate the Ah is. Amp hours are not a standard measurement and are sometimes quoted for a different rate. See how the DieHard is listed as a 20 hour rate? The Kinetic could be using a 12 hour rate (which is common to inflate the ratings). Not saying that's the case, but you have to look behind the numbers. Also, the DieHard lists cold cranking amps. The Kinetic lists cranking amps. There is a significant difference there which is why Kinetic only lists the higher one. "Cold cranking amps" is what the batt can discharge for 30 seconds at 0*F without falling below 7.2v. Cranking amps is the same test but at 32*F. The difference between the two is usually ~ 20%. The DieHard stil falls short, but if you look at the weights and footprints, the Kinetic looks to have ZERO structural reinforcement. You want that under your hood? They stuffed a ton of batt into a thin plastic box. Maybe great for a rear batt, but I'll take the DieHard with a 4 year replacement warranty for under the hood. And I'd get a matching one or two while I was at it because I know who OEM's those Platinums. [/QUOTE]

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