Genius G15000 12V/24V 15000mA Battery Charger - Wicked Features, Wicked Smart! NOCO Genius Smart Battery Chargers are some of the safest and most advanced on the market. One of our best, the G15000 is designed to charge 12-volt and 24-volt lead-acid and lithium-ion batteries up to 400Ah. It can also effectively maintain automotive, marine, RV, lawn & garden and deep-cycle batteries. It charges 2x faster than ordinary chargers, can jump start dead batteries, repair damaged batteries, power DC devices and is designed to use with micro-hybrid start-stop vehicles and CANBUS electrical systems. Powered by NOCO's VosFX Processor: The VosFX Processor is a revolutionary smart processor utilizing sophisticated levels of intelligence to alter the charge process. Rapid Charging Technology: Charges batteries 2X faster than traditional linear battery chargers. High Frequency, High Frequency: High-frequency, high-efficiency for a lightweight, compact charger. Designed for Safety: Reverse polarity, short circuit, open circuit, spark proof, overheat, overcurrent & overcharge.