These units regularly sell for $980 to $1,280 depending on the model you choose. http://www.rennline.com/Batteries-Cables/products/173/

With the 15% discount, you're looking at $833 to $1,088. That's about $200 off the top line model. Money well spent on such dramatic weight savings IMHO.

I would have but i just bought the oddyseya few weeks ago😏

Holy crap $1000?!
i am sure they weight savings are great but I may just get on a diet

I think it's pretty cool that guys like Jack Olsen have been using the Deltran Battery Tender (LiFe PO4) with success. Great weight savings and the battery only costs about $300 or so. And I'm not trying to sell Voltphreaks, just help other guys that want them. But in my humble opinion the Voltphreaks is on another level entirely. The Voltphreaks has 940 cranking amps and 430 cold cranking amps. The Battery Tender is only rated down to 40 degrees and above, and therefore doesn't even have a CA or CCA rating. That's not good. The Battery Tender is only rated 480 "LCA." That's lithium cranking amps. That's a nonstarter in my book, literally.

Additional features that distinguish Voltphreaks:
The battery can be deep cycled, I.e. fully discharged with no damage to the battery.
LVC (Low voltage cutoff)
True physical disconnect via relay switch
Remote on off with optional harness
Sophisticated circuitry to protect the battery, and your car.

Yup, that's why I wanted to pull a group buy together. Lithium batteries do have far greater longevity, so this may be the last battery you ever buy for the car. And the 30-35 lbs. weight savings is not inconsiderable. That's the equivalent of converting to a fiberglass front hood, for a lot less money. Voltphreaks isn't for everyone. But if you're serious about losing weight (for your car, that is), and want a no compromise battery that will start your car in any weather, Voltphreaks may be the right choice.

Thanks Streetdaddy, and I noticed you asked about putting a Voltphreaks group buy together back in 2016. https://rennlist.com/forums/964-foru...l#post13596641

I tried! I went with the bigger ( 925) Odyssey because i have to have reliability. I pick up kids / work at a hospital, so i cant be late. Only saved 10 lbs over a standard battery. I probably would have splurged for the voltphreaks as it is light and powerful. I dont like to worry about click, click, click. Hate that sound!