The Kayo cell looks interesting, but I wonder why they don't list it on their web site... Perhaps if they get enough orders, they will list it. It looks like it is now a special order.
Capacity is 4 amps and continuous discharge current of 20 amps, looks good. But they have a minimum order of 1,000 on those D sized Kayo's. Must be at least $5,000. I guess they'll make it to retail distributors eventually.
Does anybody know why some LifePO4's are only 1C continuous discharge rate and others I've seen as high as 15C?