TecMate OptiMate Solar DUO 10W Battery Charger Capture the limitless power of sunlight with the TecMate OptiMate Solar DUO 10W. This solar charger is engineered to keep your 12V battery fully charged, ensuring it's always ready for action. Simply position its panel to bask in daylight, and watch as it silently maintains your battery's peak condition with efficiency and ease. Features: Ideal for Std, AGM & GEL 12V batteries from 2 240Ah and Lithium LFP 12.8V / 13.2V batteries Charges and maintains a 12V battery during the day and monitors and displays the battery state of charge at night Saves flat batteries from as low as 4V with its unique pulse action The reach / distance between battery and panel is 124 (additional extenders sold separately) Automatically switches to Charge when solar power is sufficient Indoor / Outdoor lowest temperature: -4F / -20C Weatherproof charge controller case Charging Amps 0.83A from 10W panel (max. average current), 3-5A pulse current Dimensions of solar panel 14.8''x 9.8'' No risk of overcharging, totally safe for vehicle electronics, sparks suppressed, safe for long-term battery maintenance, automatic shut-down if short-circuited or battery disconnected