Our chargers come with either IK08 or IK10 protection. Think of IK ratings as a way to measure how well something can handle being bumped or hit. These ratings basically tell us how strong the charger's defense is against outside forces. It's like a score that shows how tough the charger is to withstand any accidental knocks or resist vandalism and weather conditions impacts. Hence: IK08- Protected against 5 joules of impact (the equivalent to the impact of a 1.7kg mass dropped from 300mm above the impacted surface); IK10- Protected against 20 joules of impact (the equivalent to the impact of a 5kg mass dropped from 400mm above the impacted surface). To learn more about the IK protection rating, click here.