Features: The smart, 24/7 battery care solution powered by the sun. 20 W high-efficiency solar panel with 12 V controller. Converts the low power from the solar panel to high current pulses for more effective charging and maintenance of a 12 V battery. OptiMate™ Solar does it differently: the solar panel is where the sun is and the smart pulse charger is where the battery is, for immediate information on battery condition at hand. Low-volt start of 1 V. Automatically saves, charges and maintains 12.8 V/13.2 V lithium (LiFePO4/LFP) and lead-acid STD, AGM and gel 12 V batteries. Smart charge controller automatically adjusts charge according to battery type and condition. 14' of cable separates the charger from the panel, with SAE to SAE interconnection providing the option of extending further. Can withstand temperatures down to -4°F. Travel Kit Includes: Travel bag. Polycrystalline solar panel with adjustable stand. Optimate solar DUO controller. Battery clips. Battery lead. Weatherproof charge controller case. Mounting suction cups (additional cups sold separately). Measurements: 14.3" W x 17.9" H x 1" D.