Noco Genius5 Smart 5A Battery Charger and Maintainer. 8 Step, fully automatic switch-mode battery charger and maintainer. The Genius5 restores batteries to their original capacity, recovers slightly sulfated batteries, charges batteries in cold climates, rescues drained batteries and provides maintenance charging to increase battery life. A versatile battery charger that provides charging modes for both large and small batteries from 1.2-120Ah such as Lawn Mowers, Cars, RVs, Boats and Trucks as well as for Motorcycles, ATVs, Jet Skis or Snowmobiles. Genius5 is similar to the G3500, just better. It's 34% smaller and delivers 65% more power. It's the all-in-one solution battery charger, batter maintainer, trickle charger, plus battery desulfator. Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries including flooded, gel, AGM and maintenance free, plus lithium-ion batteries. An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over charging in hot climates and under charging in cold climates. Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts. Automatically detects battery sulfation and acid stratification to restore lost battery performace for stronger engine starts and extended battery life.