



The EG4 MPPT100-48HV is a simple, reliable solar charge controller designed to help you get more usable power from your solar array. It converts higher-voltage solar input into the lower, steady voltage needed to safely charge a 48V battery bank, making it a strong option for expanding or improving a new or existing solar system.
Key Benefits
- Maximizes Solar Harvesting: Uses MPPT technology to pull the most available power from your solar panels for more efficient battery charging.
- High-Voltage PV Input: Supports up to 500VDC open-circuit voltage, helping reduce the need for combiner boxes in certain system designs.
- Fast Battery Charging: Delivers up to 100A of charging current, with adjustable settings from 0A–100A.
- Designed for 48V Battery Systems: Built for 48V nominal battery banks with a 48–62VDC charging range.
- Built-In Protection: Includes PV array DC disconnect and battery breakers for added system safety.
- EG4 Battery Communication: Communicates with EG4 batteries through the RS485 BMS port when used with non-EG4 compatible inverters.
Use Cases
The EG4 MPPT100-48HV is ideal for adding more solar charging capability to off-grid, backup power, cabin, RV, and battery-based solar systems. It can also be used to expand an existing system where additional PV input is needed to support faster charging and better energy production.
Tech Specs
- PV Input: Up to 500VDC
- Max PV String Current: 22A
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Battery Voltage: 48V nominal
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Charging Voltage Range: 48–62VDC
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Communication: RS485 BMS port
- Protection: Built-in PV disconnect and battery breaker