XS Power D680 320 CCA 7.13" x 3.03" x 6.5" 15.4 lbs
FT-230 230 CCA 7.13 x 3.03" x 6.57" 15.4 lbs
Odyssey ODS-AGM16L (the 680) 170 CCA 7.15" x 3.00" x 6.65 " 15.4 lbs
That is great data, but some might think you implying something...
If you are implying XS power really makes 40% more than Full Throttle (FT-230), and 88% more than Odyssey, that is a hard no. LOOK at the weights. Look at size? Same basic type (AGM). Do you think that is 320 CCA? No Sir, that is CA or cranking amps.... and whatever they say it is. They tested at 32F apparently? CCA test is 30 seconds, with MIN specified 7.2 voltage at 0'0F (-18.2C). Big difference. I see no CCA published for XS Power I could find. I also found specs varied a bit from vendor to vendor?
EDIT: I found CA and CCA for XS Power D680 CA – 370, CCA – 326. This is MORE than you listed. I will just say it, I am skeptical and their specs, all over the place. If that is true WOW. It is under the too good to be true in my mind but someone buy one and test it. Those numbers just are not believable to me. It could just be a typo. and CCA is 226A. But CA of 370A? At this point who cares but this is why I went FT-230.
I found the documentation on FT-230 to be very detailed, professional and correct. Documentation, hard data on XS Power not so satisfying and inconsistent. I called both companies. Full Throttle customer service was better and knew more technical details. XS Power was USA distributor and nice enough, just not able to answer questions.
Do you research.
XS Power is 1 yr warranty on AGM batteries.
Full Throttle 4 years.
Apples and apple's. The FT-230 has 310A CA. So is the 320A for XS Power better? May be, if accurate. Again the published data and documentation is less with XS Power brand. We don't know XS power's CCA, at least I could find.
I have used this "680" size AMG battery for decades in motorcycle and plane, mostly Odyssey... almost 2 years the FT-230 charges to higher voltage, holds (charge) voltage very well, high build build quality, cranks better than my last Odyssey PC680.... Price is less as well... As far as Odyssey they cost more. They use to be lower priced lower. There is no discount or sale.
For me how long will it last and do the job is what counts... I have a very good feeling I will get nice service, but this is my first FT battery. At this point it is reliable. My plane and motorcycle go without use for periods, sometimes the motorcycle 3 months. I will not the NOCO 2 amp on it. Sometimes I forget. No worries, it is fully charged 3 months later. My bike does have at least a clock for sure, may be ECU? So I am pleased.
My first Odyssey P680 long ago I recall lasted at least +5 years. The following PC680's not as long. There have been rumor's that they lowered quality. Even if they are the same as always they cost more, and my last Odyssey did not last (with caveat I let it discharge for a long time). My experiment with FT is a win so far.
XS Power is not making 320A CCA. Is it making 320A CA? As I said I did not have confidence in what is published. I am sure it's OK. Up to you. I sound like I am making a sales pitch advertisement for Full Throttle. Batteries are batteries, shop around. Found the OFF ROAD and Power Sport forums talk about these batteries.
PS Earth X was on the radar last time I bought a battery. I can almost buy three FT-230's for the price of one Earth X, which has a 1 year warranty! I talked to them at the airshow and they said it should last 5 yrs. The LiFePo4 fire risk is small to nil. It has a fancy BMS to maintain charging because they need that to be safe. Also they are not loving engine heat firewall forward. No debate, Earth X batteries are nice. However if they cost 2.5 times more and have same service life, the math was simple for me. On the other hand people swear by them. Again does it hold charge, start plane, last a long time. That is all I expect along with good value (reasonable price).