OptiMATE TM-522-D2 Solar Duo + 20W Solar Panel – 6-Step 12V / 12.8V 1.67A Sealed Solar Battery Saving Charger & Maintainer

The OptiMATE TM-522-D2 Solar Duo + 20W Solar Panel kit is an intelligent solar-powered charger and maintainer that is compatible with all 12V batteries, making it an excellent choice for both 12V lead-acid and 12.8V lithium batteries. It functions as a charger during the day and a monitor at night.

The intelligent charge controller automatically adjusts the charge based on the type and condition of the battery, ensuring a longer battery life and more power. The controller’s fully automated multi-step program safely charges the battery to full capacity. Simply connect the OptiMATE Solar DUO 20W to the battery, and it will take care of the rest without the need for supervision.