EPEVER MPPT Solar Charge Controller 40Amp 12V/24V DC , Max PV 100V ,Max Solar Panels input 520W / 1040W, Common Negative Grounding . Suitable for Lead-acid (Sealed / Gel(AGM) / Flooded); Lithium(LiFePO4 , Li (NiCoMn)O2) and User-defined . Technical Data: Model: Tracer4210AN (Upgraded version)Rated charge and discharge current :40ANominal system voltage:12V/24V DC auto workMax. PV input power: 520W for 12V battery system or 1040W for 24V battery systemMax. PV open circuit voltage:100V(at minimum operating environment temperature) 92V(at 25℃ environment temperature)Support Lead-acid battery types: Sealed, Gel(AGM), Flooded, User(9～17V@12V; 18～34V@ 24V) ;Support Li-ion Battery types: LiFePO4 (4s/12V; 8s/24V) , Li(NiCoMn)O2 (3s/12V; 6s/24V), User(9～34V).Grounding : Common negativeTracking efficiency : ≥99.5% , Max. conversion efficiency :98%Working environment temperature : -25℃～+50℃(100% input and output)Temperature: -20°C -- +70°C/-4°F -- 158°FLCD backlight time : 60S (Default)RS485 interface:5VDC/100mAController Terminals:#6 AWG(16mm2) ; Recommended Wire cable:#6 AWG(16mm2)Dimension:252*180*63mm ; weight :1.65 KG Package List: 1 X 40A MPPT Solar Charge Controller (Tracer4210AN )1 X Temperature sensor for controller（Model:RT-MF58R47K3.81A） 1 X Manual (English) Note : Our warehouse in Chicago, Illinois, our professional engineer local team supply solar system solutions and Tech-support for you in time . EPEVER Tracer-AN series mppt solar charge controller is new upgraded version , Better funcations and advanced technology. Added Features ： Blacklight LCD Display ; More Safety Protection Functions ;Compatible with lead-acid and lithium-ion batteries (Li-ion battery self-activation) too ; Support selecting battery types by controller buttons directly. Product Features: You could also contact vendor (Goland Century) services to get program firmware upgrade file to upgrade your old version controller, you could choose Lithium types by controller buttons too. Based on common negative design and Advanced MPPT technology, with efficiency no less than 99.5%,Ultra-fast tracking speed and tracking efficiency ;With the adaptive three-stage charging mode based on digital control circuit, Tracer-AN series controllers can effectively prolong the life-cycle of battery and significantly improve the system performance. The load, utility or generator auto-control relays make it easy to compose the hybrid power system;All-around electronic protections, including overcharging, over discharging, PV reverse polarity protection, effectively ensure the safer and more reliable operation of the solar system for longer service time;The isolated RS485 interface with standard MODBUS communication protocol, easy for customer to monitor and set the parameters via mobile phone APP or PC software;This modular solar controller can be widely used for different applications, e.g.solar RV, Communication base stations, household systems, and field monitoring, etc. Protection function : •PV Over Current/power protection • PV Short Circuit protection • PV Reverse Polarity protection • Night Reverse Charging protection • Controller Overheating protection • Battery Reverse Polarity protection • Battery Over Voltage protection • Battery Over Discharge protection • Battery Overheating protection • Lithium Battery Low Temperature protection • Load Short Circuit protection • Load Overload protection •TVS High Voltage Transients protection CONNECTION DIAGRAM Battery must be connected first ! Never connect soalr panel array to controller Without/Before connect battery.DO NOT connect any inverter/wind/Alternator or Charger into the charge controller directly ! You should connect with battery and add fuse .If there is a long distance between the PV array and controller or between the controller and battery, larger size wires should be used to reduce the voltage drop and improve performance. (Recommended wire size is only for reference.) How to program for Lithium Battery parameters ？ Via Remote Meter (Accessories needed: MT50 )Via Phone APP [ Android or IOS], (Accessories needed Adapter：EPEVER-BLE-RJ45-D or EPEVER-WiFi-2.4G-RJ45-D )Via PC Software (Accessories needed RS485 cable :CC-USB-RS485-150U ) , Software download : EPEVER official website or read in manual . EPEVER BLE RJ45 D EPEVER WiFi 2.4G RJ45 D MT50 CC-USB-RS485-150U MPPT 30A+MT50+RTS MPPT 40A+MT50+RTS Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.1 out of 5 stars 436 4.1 out of 5 stars 436 4.4 out of 5 stars 82 4.1 out of 5 stars 436 4.3 out of 5 stars 143 4.4 out of 5 stars 138 Price $34.97$34.97 $35.97$35.97 $31.99$31.99 $10.99$10.99 $109.99$109.99 $129.99$129.99 Rated Charge Current EPEVER BLE Adapter EPEVER WiFi Adapter Remote Meter PC Communication cable 30 Amp 40 Amp Max PV Voltage APP remote control APP remote control Manually set PC Software 100V 100V Max Array Solar Panel power Support Android & iOS Support Android & iOS Most Stable Most comprehensive 390W/12V; 780W/24V 520W/12V; 1040W/24V Battery Type no data no data no data no data Sealed, Gel(AGM), Flooded, User and Lithium Sealed, Gel(AGM), Flooded, User and Lithium Grounding no data no data no data no data Common Negative Grounding Common Negative Grounding Controller Terminal no data no data no data no data 6AWG(16mm2 ) 6AWG(16mm 2 ) Recommended Cable Size no data no data no data no data 8AWG(10mm2 ) 6AWG(16mm 2 )