MakeSkyBule 80A (parallel to 2 pieces 40A) MPPT Solar Charging Controller Rated Output Current: 84A 3 Step Charging: Bulk Stage Absorption Stage Floating Stage 12V 24V 36V 48V Automatic Battery Voltage Detection Lead Acid Battery, Bent Gel, Lithium Battery Suitable for Batteries Inputs Below Solar Panel Watt 12V Battery 960W 24V Battery 1920W 36V Battery 2800W 48V Battery Working Voltage 12V Battery 3400W PV Array Open Voltage (Voc) of 20-80VDC 24V Battery 37-105VDC 36V Battery 50-160VDC 48V Battery 72-160VDC Output Battery Voltage Automatic Recognition of 12V (DC9VDC15V) 24V system (DC18V, DC29V) 36V system (DC30V, DC39V) 48V System (DC40V, DC60V) Current Limiting Protection: 102A Output Voltage Accuracy: ≤±1% Output Voltage Ripple Over Click: 100 mV LCD PV Voltage / Output Power Battery Voltage / Current Operating Mode / Temperature Protected Charging Mode Fan On Temperature:> 45°C Temperature Off Fan Operating Temperature Range 40°C to + 75°C Package of 2 °C blue MPPT solar charging Controller