9V/18V Solar Panel MPPT Controller 3.7V 7.4V Lithium Battery Charger Module Feature: 1. 1A 3.2-18.5V multi-function battery charger with photovoltaic cell MPPT function. 2. Complete charging controller for single or multiple Li-ion, or lithium titanate batteries. 3. The maximum load current / output current is 1A, but you can change the current by changing the value of the Rcs resistor. 4. Can be used as voltage source when battery is absent. 5. Automatic conditioning of deeply discharged batteries. 6. Automatic recharge, battery overvoltage protection. Specification: Item Type: Solar Panel MPPT Controller Charging Module Option: 9V, 18V 9V (for 9V Solar Panel): Input DC 9-28V, Output DC 1.2-8V Adjustable (3.6V 4.2V 4.3V 4.35V 7.2V) 18V (for 18V Solar Panel): Input DC 18-28V, Output DC 1.2-17V Adjustable (3.6V 4.2V 4.3V 4.35V 8.4V 12.6V 16.8V) MPPT Disable (Change R5 to 12K&;, it is recommended to buy DD28CRTA): Input DC 7-28V, Output DC 1.2-21V Adjustable(3.6V 4.2V 4.3V 4.35V 8.4V 12.6V 16.8V 21V) LED indicator: 'CR' LED is status indicator Operating Ambient Temperature: -40 to 85 Package List: 1 x Solar Panel MPPT Controller Charging Module 2) Payment must be made within 3 days of order. 1. WORLDWIDE SHIPPING.(Except some countries and APO/FPO) 2. Orders processedtimely after thepayment verification. 3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. 4. The images shown are not the actual item and are for your reference only. 5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season. 6. If you have not received your shipment within the period, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction! 7. Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery. 9. BR buyer please provide the cpf or cnpj, it will be better for you to get it more quickly. thanks Return and Refund We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them!