When you order a PowerSports battery from BatteryStuff, you always receive a fresh, ready to install battery. When we ship our maintenance free AGM powersports batteries, they are pre-filled, charged and ready to install. These batteries are sealed and considered “dry” batteries. Because our batteries are freshly activated you may occasionally see small acid stains on the packaging. AGM batteries are ‘fully sealed’, but do have pressure vents sealed underneath the battery top. read more...