[Es2] Do I want an Optima?

bob bob at maxboostracing.com
Sun Sep 17 16:31:15 EDT 2006

The optima batteries dont have vents so you dont have to worry about 
that, they are completely sealed. If you keep your voltage under 15v 
they will not gas, however there is a safety that will allow gasses to 
escape if you exceed 17+- volts. They are AGM (absorbed glass matt) 
batteries, and honestly i havent had stellar luck with them. I havent 
gotten more than a year out of the 3 Ive had. In all fairness they 
werent daily drivers and sat for long periods but that was their selling 
point, so it should have been fine.

Kneale Brownson wrote:
> You want a vented battery in the back seat mounting area unless it is a
> completely sealed unit (do the gel-types "breath"?).   As I understand it,
> Optima is no different than other lead/acid batteries except it has
> features to let it survive tough heat and vibration exposures, neither of
> which should apply to the inside of a sedan driven on normal roads.  I
> remember something from a past search of Optima's website material on
> safety that their battery can produce some sort of fume when overcharged
> and a warning somewhere there that hydrogen gas is flammable, so the
> battery should not be exposed to sparking.
> At 03:51 PM 9/17/2006 -0400, Dave Kase wrote:
>> I was getting ready to buy an Optima Red Top for my e//S2 and was told I 
>> might not be doing the right thing.
>> The battery is currently in the trunk area and I will be relocating to 
>> under the rear seat in a stock S2 battery box.  I figured an Optima 
>> would be the right choice as it is a vent-free battery and the battery 
>> will be in the passenger compartment.
>> I went to pick one up at Advance Auto and the store employee told me 
>> that I should have a vented battery.  She said that a vented battery 
>> would exhaust the fumes outside the car.  If I had an Optima I might 
>> exhaust any fumes inside the car - not good.
>> OK, OK, I know...it was a discount auto parts joint with a likely 
>> less-than-pro clerk, but it did make me think.
>> Do I need an Optima? (I guess not since the stock S2 battery was vented 
>> - the vent hose in still in the box I bought)
>> Do I even want an Optima?
>> ---
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