Shouldve read through this thread first.

http://www.amazon.com/Sportspower-De.../dp/B004D8P2BC

 

If you have the coin give the Shorai a try.

Lithium Iron Phosphate it is the same battery chemistry as most modern portable electronics are using.

The chemistry packs a lot of punch in a small package that's why their 5 lbs lfx36 series can start our cars and replace that 26 lbs oem brick!

Also the self discharge rate characteristics of liFePO4 is fairly low so the car can sit just as long as the std lead acid battery and still start.

The chemistry of lifepo4 also has an advantage in temperature performance that's why CCA for the shorai is really not relevant, but their 36aH series batteries still produce 540 cca.

I've been using them on my track bikes for quite some time and I'm waiting for my oem battery to die and I will drop in my LFX36a3

 

Here's my write on the LiFePO4 battery I'm using. No problems so far. It's a Ballistic 12 cell.

https://www.s2ki.com/s2000/topic/105...elocation-diy/

 

Happy with the Battery Tender 480 CCA... held up nicely over the winter. ~45 days between starts in garage avg ~40 degrees F... Turned right over

 

I run SHORAI Lithium-Iron battery's in my bikes and as long as they last two or more years I'll keep using them. Best battery I've ever had in my bikes and I've been on bikes for over 45 years.
The Shorai LFX36L3-BS12 weighs only 4.96 lbs with 540CCA, as long as your car does not have a big draw with the key off it should start the S just fine with some CCA to spare. Yes, they cost more but you want the most CCA's in the lightest package you can find if you track your car. For a DD that's driven mostly on the street I'd skip this battery, but for those that want to go fast at the track it would be my first choice.

ROD

 

I like the Shorai batteries but I think they are to expensive, at least here in Europe.
So after some digging I found this instead http://www.ev-power.eu/LiFeYPO4-batt...0Ah.html?cur=0
It's 7,6lbs and about the same size as the LFX36L3-BS12 but it's higher capacity 20Ah vs 12Ah on the Shorai.
At $110 the price is just a third though!
Only thing holding me off from buying is there seems to be no way to balance charge the cells and I'm not sure 200A max discharge and 20A max charge is enough.
But with the limited season we have here I think it might work fine for a couple of years.

 

I vote Optima because in every car I've ever owned and have had to replace the battery, I've gotten an Optima, and the battery has always outlasted the car. They have gone through extreme heat, cold, and even amplifiers (with zero lights diming) with me. This is just my experience with Optima.

I believe our cars only have the yellow top available to us. Might be a little pricy, heavier than other batteries, but you can be confident that It'll never leave you stranded. Also, If you're worried about the little extra added weight....take out the jumper cables You won't need em anymore.

 

I've been running odyssey pc680 for the last 7 years I think.
I'm on my second one now though because I didnt take good care of the first one, very good battery as long as you keep it charged if youre going to leave the car for a month or more.

I'm kind of leaning towards some kind of lithium battery for the next time but I have no idea what to look for.

 

I'm looking at the pc680. Can you really leave the car for weeks without trickle charging it?
It was my understanding that i would need to have the battery on trickle charge anytime I didn't drive the car at least every couple days.
Any information on those who have used the odessy pc680 would be much appreciated.
thanks!

 

i just ordered this for my AP2:
http://www.checkerdsports.com/csprod...80%20tray.html

hopefully everything works out great!