Charge Controllers

The ET-NC G3 series is a new generation of high-current MPPT charge controller. It offers superior MPPT tracking and conversion efficiency. The series is compatible with various lithium battery types and supports threestage charging management to extend battery lifespan. Its exceptional low-power design significantly reduces static consumption, prolonging system standby time. Comprehensive electronic protection and flexible communication options (WiFi, Bluetooth, 4G, etc.) further enhance system reliability and monitoring capabilities. It is widely used in RVs, boats, industrial monitoring, and small to medium-sized solar power systems.

Features:

• Supports 12V/24V/36V/48V systems; Charge/Discharge current: 50A–100A
• All metal die-casting shell, IP43⁽¹⁾
• Supports two PV inputs⁽²⁾
• Max. MPPT tracking efficiency: 99.9%; Max. Conversion efficiency: 98.5%
• Compatible with AGM, Gel, Flooded, LiFePO4 batteries, etc.
• Constant voltage output function: Enables direct load supply with sufficient PV energy
• Communication interface with electrical isolation

1. CAN: Parallel operation of up to 6 devices (with or without batteries)
2. BMS: Ensures reliable lithium battery charge/discharge management^(3）
3. RS485: Optional Bluetooth, WiFi, or 4G modules⁽⁴⁾

• Real-time data recording, event logging, and power statistics function
• EMC compliant (CLASS B)

(1) IP32 without terminal cover
(2) ET10420NC G3 supports two PV inputs
(3) Directly communicates with EPEVER batteries; Requires BMS-LINK module for others (refer to manual)

TECHNICAL SPECIFICATION:

Electrical Parameters 

Battery Rated Voltage : 12/24/48VDC or Auto

Controller Operating Voltage Range : 8–62V

Battery Type : AGM (Default) / Gel / Flooded / User

Lithium Battery Type : LiFePO4 / Li (NiCoMn)O2 / User

Rated Charging/Discharging Current : 50A

Rated Charging Power : 650W/12V; 1,300W/24V; 2,600W/48V

Maximum Charging Power : 650W/12V; 1,300W/24V; 2,600W/48V

PV Maximum Open-circuit Voltage : 200V (@lowest temperature); 180V (@25℃)

MPPT Operating Voltage Range : (Battery voltage plus 2V, and >28V) to 144V (@25 ℃)

Tracking Efficiency : ≥ 99.5% 

Maximum Conversion Efficiency : 98.3%

Temperature Compensation Coefficient : -3mV/℃/2V (Default)

Self-consumption (Enabled Communication) : 98mA/12V; 60mA/24V; 46mA/48V

Self-consumption (Disabled Communication) : 48mA/12V; 25mA/24V; 14mA/48V

Grounding Type : Common negative grounding

Dry Contact (Oil Generator / Utility) : Rated value: 5A/30VDC; Maximum value: 0.5A/60VDC

RS485 Communication Port : 5VDC/200mA (RJ45)

Mechanical Parameters

Dimension (Length × Width × Height), IP43 (Controller & White Terminal Cover) : 307 × 253 ×143mm

Dimension (Length × Width × Height), IP32 (Controller Only) : 307 × 202 ×134mm

Mounting Dimension (Length × Width) : 295 × 130mm

Mounting Hole Size : Φ7mm

Wiring Terminal : 6AWG/16mm²

Recommended Cable : 6AWG/16mm²

Net Weight IP43 (Controller & White Terminal Cover) : 5.00kg

Net Weight IP32 (Controller Only) : 4.79kg

Environmental Parameters

Operating Temperature Range : -25℃ to +60℃ (Derating when temperature is higher than 40℃)

LCD temperature range : -20℃ to +70℃

Storage Temperature Range : -30℃ to +70℃

Relative Humidity : 5%–95% (N.C)

Altitude : < 5,000M (Derating when altitude is higher than 2,000m)

Enclosure : IP43 (Controller & White Terminal Cover); IP32 (Controller Only)

Pollution Degree : PD2

Certification

Safety : EN/IEC62109-1

EMC : EN61000-6-1 / EN61000-6-3

FCC : 47 CFR Part 15, Subpart B

ROHS : IEC62321-3-1