ET-NC G3 Series (50~100A) MPPT Charge Controller
The ET-NC G3 MPPT Charge Controller for Battery Storage is a high-efficiency solar charging solution designed for off-grid and hybrid energy systems. With 50A-100A charging capacity and 99.9% MPPT tracking efficiency, it maximizes power generation from solar panels while ensuring stable and reliable battery charging. Compatible with 12V, 24V, and 48V battery systems, it supports both lithium and lead-acid batteries, making it a versatile choice for various solar energy applications. Equipped with RS485 communication, the ET-NC G3 allows for seamless integration with Bluetooth, WiFi, or 4G modules, enabling real-time remote monitoring and system control. Its CAN bus interface supports parallel operation of up to six controllers, making it ideal for large-scale solar energy storage solutions. Whether used in residential, commercial, or industrial setups, this controller ensures efficient energy management and system scalability. Built for durability and long-term performance, the ET-NC G3 features a rugged metal housing and IP32/IP43 protection, providing resistance to dust, moisture, and extreme temperatures. Advanced electronic protections, including overcharge, over-discharge, short circuit, and thermal safeguards, help extend battery life and maintain system stability. With its high-efficiency MPPT tracking and smart charging capabilities, this controller is an excellent choice for anyone looking to optimize their off-grid solar battery storage system.
- 2-year warranty
- Worldwide support
- Certified & compliant

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Specifications
- 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
- 100A
- Rated Charging Power
- 1,300W/12V; 2,600W/24V; 5,200W/48V
- Maximum Charging Power
- 1,300W/12V; 2,600W/24V; 5,200W/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 Maximum
- ≥ 99.5%
- Conversion Efficiency
- 98.5%
- 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)
- Rated value: 5A/30VDC; Maximum value: 0.5A/60VDC
- RS485 Communication Port
- 5VDC/200mA (RJ45)
- Dimension (mm) (L×W×H): IP43 (Controller & White Terminal Cover)
- 352 × 263 ×158
- Dimension (mm) (L× W×H): IP32 (Controller Only)
- 352 × 212 ×149
- Mounting Dimension (L×W)
- 340 × 140
- Mounting Hole Size (mm)
- Φ7
- Wiring Terminal
- 2AWG/35mm²
- Recommended Cable
- 2AWG/35mm²
- Net Weight (kg): IP43 (Controller & White Terminal Cover)
- 7.79
- Net Weight (kg): IP32 (Controller Only)
- 7.55
- 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 (>2,000m Derating)
- Enclosure
- IP43 (Controller & White Terminal Cover); IP32 (Controller Only)
- Pollution Degree
- PD2
- Safety
- EN/IEC62109-1
- EMC
- EN61000-6-1 / EN61000-6-3
- FCC
- 47 CFR Part 15, Subpart B
- RoHS
- IEC62321-3-1
Highlights
- Supports 12V/24V/48V systems; Charge current: 50A–100A
- All metal die-casting shell, IP43
- Some models supports two PV inputs
- Max. MPPT tracking efficiency: 99.9%; Max. Conversion efficiency: 98.5%
- Compatible with AGM, Gel, Flooded, LiFePO4 batteries, etc.
- Constant voltage output function
- Communication interface with electrical isolation
- CAN: Parallel operation of up to 6 devices (with or without batteries)
- BMS: Ensures reliable lithium battery charge management
- RS485: Optional Bluetooth, WiFi, or 4G modules
- Real-time data recording, event logging, and power statistics function
- EMC compliant (CLASS B)
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