M17D MPPT Solar Charge Controller Car Battery Charging Voltage Regulator with Overcharge Protection Function 24/36/48/60/72VOOTDTY  Features: 100% brand new and high qualityMPPT high-efficiency charging method, the charging efficiency is 97%. The overcharge protection function effectively protects the battery from overcharging. Anti-reverse connection protection, both the battery and battery board have anti-reverse connection protection. Short circuit protection, with child lock, safe and convenient. It can be applied to all kinds of batteries, the battery board takes power, and the standby power consumption is 0. Specifications: Battery Voltage Range:24v/36v/48v/60v/72v (18v Battery Board)48v/60v/72v (36v Battery Board)Maximum Charging Current: 16.7AMaximum Solar Panel Power: ≤300wSolar Panel Input Voltage: 12v~50v (the Voltage of the Solar Panel Needs to Be Lower Than the Battery Voltage)The Highest Charging Voltage (that Is, Overvoltage Protection): 28.8v(24v), 43.2v(36v), 57.6v(48v), 72.0(60v), 86.4v(72v), Can Be Set by YourselfMppt Voltage Range: 12v-50vMaximum Conversion Efficiency: ≥97%Load Loss:25ma (18v Battery Board to Charge 24v Battery)20ma (36v Battery Board to Charge 48v Battery)Mppt Tracking Efficiency: ≥98%Working Temperature: -35℃-65℃Insulation Resistance: AC1KV, 5min Test/>=20 MegohmsProtection Level: IP30Size: Approx. 156x43x81mm/6.14x1.69x3.18inchPackage Includes: 1x Solar Charge Controllernote: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.