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Old 01-05-2009, 10:39 PM   #9 (permalink)
dremd
EV OR DIESEL
 
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Location: South Louisiana
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Quote:
Originally Posted by RobertSmalls View Post
I'm an ASE certified auto parts specialist, and an engineer. I have to agree with the Christ. Optima != garbage. I've seen lots of cases of Optimae testing bad, then being thrown on the slow-charger over night, and subsequently testing good and working fine.
Interesting My charger is "Fully automatic" which basically just means it pours 25.7 amps in to it until it is almost all the way charged, then tapers off. Could be my issue.

These guys Charging an Optima or AGM Battery : Batteries Are Us recommend charging at a minimum of 100 amps. No Idea who is right . . . . .

Quote:
Originally Posted by RobertSmalls View Post
That said, I don't recommend the Optima to most people. AGM batteries are really neat technology, but the vast majority of people who buy them, don't really benefit from those advantages (nonspillable, vibration resistant, the yellow-top are deep-cycleable).
I started buying them when I was on a crazy weight reduction kick (drag racing). I was actually pretty loyal to them for a while

Quote:
Originally Posted by RobertSmalls View Post
One downside of the Optima is that fast-charging it kills it. The other downside is it's twice the price of a conventional battery.
Not to doubt at all, but do you have a source?
Just ran across these 2 on their page.
News, Events, FAQ
News, Events, FAQ



Quote:
Originally Posted by RobertSmalls View Post
Regarding the lawn & garden battery: That's probably rated for 300CCA or so. It'll work fine for now, but I bet it'll be unable to start the car next winter. Undersized batteries don't last, for whatever reasons.
No doubt it is not intended for automotive use; but it works much longer than any optima has so far. I'm actually considering leaving it because it never gets very cold here and I never drive it when it is "cold".
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2012 Tesla Model S P85
2013 Nissan LEAF SV totaled by now deceased intoxacated driver.
2012 Nissan LEAF SV
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