All CTEK Chargers Feature:

• Less Charging time than conventional chargers - provides current pulses to maintain fully charged batteries
• No need to disconnect battery from vehicle
• Fits virtually all lead-acid battery types: Wet, Sealed, Gel & AGM
• Slashproof and weatherproof - Sealed design is approved for outdoor use
• Compact, lightweight and easily portable
• Impossible to connect incorrectly

US3300 Features:

• Stong multi-tasker that can handle all but the largest vehicles
• Recovers or "wakes" sulfated or under charged battery
• Three charging modes 0.8A@ 14.4V,  3.3A@ 14.4V, 3.3A @ 14.7V
• Unique cold temperature mode enables fater re-charging, even in the coldest winter conditions
• Specifially recommended for Optima Red Top batteries
• Ideal Uses:  All US800 applications plus boats, campers and trucks