Diamond Battery Diamond HVT 12S 66000 mAh Semi-Solid-State Li-ion Battery $2,699.00 Note: Please contact sales before placing your order. Diamond HVT 12S 66000 mAh low-temperature semi-solid-state li-ion battery features 292 Wh/kg high energy density, high discharge rate, low-temperature resistance and high... Add to Cart Add to Wish Lists My Wish List Create New Wish List Compare