A G M battery?

[Joe B]

Originally Posted by SF-Rockster

If you store your Box away often get a battery tender.
It'll help keep the battery topped off until you take her out of storage.

Yah yah, I know all about battery tenders (and I have one). My storage unit doesn't have electricity, and I don't want to have to run an extension cord out to the car every time I come home, or leave it plugged in if I'm out of town for a week or 2. Now then, does anyone know anything about AGM batteries?

[particlewave]

Originally Posted by Joe B

Now then, does anyone know anything about AGM batteries?

I know they're a pita to make...yes, I make car batteries for a living and the Optima AGM's are tough to build
Heavy plates and lots of dust...ugh.

[stephen wilson]

I've heard there is some quality problems with Optima's lately, with many not lasting through the warranty period.

[JFP in PA]

Originally Posted by stephen wilson

I've heard there is some quality problems with Optima's lately, with many not lasting through the warranty period.

We see a lot of Optima's, old and new (and in fact currently have a car in the shop that we installed one in 7+ years ago), and have not had problems with any of them.

[laphan]

My daily driver (camry hybrid) came from factory with AGM 12V battery. So far, 5.5 years and 91K miles, the battery still works fine. I left the car in the garage for 4 MI winter weeks before and it started just fine.
I don't know if the hybrid battery helps to maintain the 12V or not though... So far this battery last longer than any other battery that I ever had...

[BYprodriver]

Originally Posted by stephen wilson

I've heard there is some quality problems with Optima's lately, with many not lasting through the warranty period.

I bought a Optima (smallest red top) about 4 years ago & I was disappointed at how quickly it discharges in my Box here in SoCA. Needs recharging after sitting 4 days unlocked alarm off in my garage. When my IS350 oem battery (Panasonic AGM) died after 5 years I decided to swap the Optima to the IS350. I called Costco to inquire about warrant exchange while I had the Optima was out. Costco said they would exchange it but they did not have any & did not expect any for a least 2 months. This was about 10 months ago. The Optima works fine in the IS350 & never sits more than 2 days & the Odessey680 performs a little better in my Box & weighs about 12lbs less including the alum bracket. The Odessey has sat for 3 months in the Box with Porsche Maintainer on it during my Cayman airbox/suspension overhaul so I will report back if it has any issues in a couple weeks.