Check the listing for details. 12V/24V/36V/48V 20/40/60A MPPT Solar Charge Controller Panel Battery Regulator. Color: Orange, Condition: New. Listed at 35.99 USD. 12/24V/36V/48V 20/40/60A MPPT Solar Charge Controller Panel Battery RegulatorOverview：MPPT series solar charge controller is based on an advanced maximum power point tracking (MPPT) technology developed, dedicated to the solar system, the charge controller conversion efficiency up to 97%.It comes with a number of outstanding features, such as:100% MPPT technologyBuilt-in DSP controller with high performanceeasy installation, easy setupAutomatic switch for 12V/24V/36V/48V battery bank3-stage charging optimizes battery performanceOvercharge protection, Input PV polarity reverse protection, Output limited current protection, Over-temperature protectionTroubleshooting promotion function.Suitable for battery types such as sealed lead acid, vented gel and lithium battery, etcProgram the charging and discharging parameters and charge by simply selecting the battery type. Note: The corresponding open circuit voltage of the battery is as follows: 12V battery: the lowest open circuit voltage should be around 60V 24V battery: the best open circuit voltage is above 80V 36V battery: the best open circuit voltage is above 90V 48V battery: the best open circuit voltage is above 100V Technical DataModelsMPPT-20AMPPT-30AMPPT-40AMPPT-50AMPPT-60ACharging TechnologyMPPTCharge Algorithm3-StageMAX PV Input Power12v system240w360w480w600w720w24v system480w720w960w1200w1440w36v system720w1080w1400w1800w2100w48v system960w1440w1700w2200w2800wMax Open Voltage of PV Module12v system DC20-80V24v system DC37-105V36v system DC60V-150V48v system DC80V-150VNominal System Voltage12V/24V/36V/48VConversion Efficiency≤98%MPPT Tracking Efficiency>99%Batteries charge voltage referenceBatteryTypeAbsorption Voltage(Constant voltage)Floating Voltage 12v24v48v12v24v48vVented14.2v28.6v57.2v13.2v26.4v52.8vSealed14.4v28.8v57.6v13.8v27.6v55.2vGel14.4v28.8v57.6v13.8v27.6v55.2vNiCd14.2v28.6v57.2v14.0v28.0v56.0vLithium orothersDefined by usersEnvironmentOperating Temperature Range-35℃~+45℃Humidity Range≤95%，Non-condensingAltitude