Odyssey batteries are made in the US, in Springfield MO. Warranty details can be found at the link below. This battery carries a three year warranty.
https://www.odysseybattery.com/wp-content/uploads/sites/2/odyssey-battery-general-product-limited-warranty_0523.pdf
Full River battery specs can be found at the link below as well:
https://www.genesisoffroad.com/fullriver-group-25#tab-10