The NOCO Genius2 is a battery charger, maintainer and conditioner suitable for 6v and 12v lead acid batteries plus 12v AGM, gel, maintenance free and lithium ion batteries. Capable of recovering deeply discharged batteries down to Zero voltsDetects sulphation and acid stratification then rectifies to restore lost battery performanceSpark proof technology and reverse polarity protectionCapable of charging batteries up to 40 amp hours and maintaining batteries of any capacitySafely monitors battery condition and maintains optimum charge level with Zero overchargeThe Genius2 represents the next generation of battery charging and maintenance. It is 31% smaller and delivers 82% more power than the previous G1100 charger and includes enhanced features. Keeping your battery in top condition has never been easier, simply connect the Genius2 and select the charge mode. That's all you have to do for worry free, year round battery maintenance. If your battery is deeply discharged then chances are