1A 3.2-18.5V Multipurpose Battery Charger with With Photovoltaic Cell MPPT FunctionComplete Charge Controller for Singleor Multi-cell Lithium ion, LiFePO4 or Lithium Titanate BatteriesMPPT is 18V : 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 12Kohm,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)The maximum charge current / output current is 1A, but you can change the current by changing the value of the Rcs resistor.Can be used as Voltage Source when Battery is AbsentAutomatic Conditioning of Deeply Discharged BatteriesAutomatic RechargeLed indicator :"CR" LED is charge status indicatorBattery Overvoltage ProtectionOperating Ambient Temperature-40 to 85Size : 45 x 20 x 15mmWeight : 7.3gApplications:18V 12V 9V Solar battery chargingCar battery chargingMobile LoadspeakerElectric Bicycle ChargerUPSPortable Industrial and EquipmentStandalone Battery ChargersHand-held EquipmentBattery-Backup SystemsPortable Industrial and EquipmentStandalone Chargers for Lithium ion,LiFePO4 or Lithium Titanate BatteriesColour:blackMaterial:PCB + electronic componentsPackage Contents:1 x MPPT Solar ControllerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.