Connect the Noco Genius2D 2-Amp Direct-Mount 12V Battery Charger & Maintainer to your car, boat, RV, or power equipment, and keep your battery perfectly topped off. This compact charger comes with an easily installed mounting bracket, a 24" cable with sparkproof connectors for the battery terminals, and another 24" cable to an AC outlet. The charger senses temperature and adjusts the charge accordingly, and diagnoses and responds to overheat, over-voltage, damage or shorts, and reversed polarity. The unit is designed to withstand the heat and shocks of engine compartments, and at 5 x 3 x 1.6", it takes up little room.