Bosch 10 8v vs 12v batteries what s the difference

Long battery life thanks to CoolPack 2.0 technology. The seller is campbellmillertoolsltd and is located in Glasgow. Battery Capacity 8.0 Ah. Bosch procore18v 8.0ah li-ion professional battery 1600a016gk uk offshore scottish islands, channel isles, jersey & all other uk islands.