2 Year Warranty | Using state of the art technology, the TE4-0226 battery charger enables the re-charging of batteries to almost 100% of their original capacity | Automatically diagnose, recover, charge, and maintain batteries for months. Fully automatic operation from Charge to Maintenance modes | Input: 105-125VAC. 60Hz or 200-240VAC 50-Hz | Output: 12 and 24V DC | Charging Current: 4A or 6A for 12V batteries, 3A for 24V batteries, 13.6V/4A power supply, 16V/1.5A boost for severely discharged batteries | Can serve as a 13.6v power supply | Boosts deep discharged batteries (4.5V) | Spark proof | Great for RV, boats, cars, bikes & more | Auto select charging voltage | Works with all types of 12V/24V lead-acid: Wet, MF, AGM & GEL | Automatically diagnose, recover, charge & maintain batteries | Fully automatic from charge to maintenance mode | IP65 (Dust & splash proof) | Reverse polarity, overcharge, & short-circuit protection | Error beep warning with LED display | LED power & charging indicators | Interchangeable lead sets: clamps & eyelet terminals | No risk of overcharging