REGO 3 Port 400A Battery Combiner Box
Best power solution for scaling high-capacity lithium battery banks.
The Renogy REGO 3 Port 400A Battery Combiner Box is engineered to seamlessly integrate and expand your solar power system with REGO 400Ah lithium batteries. It allows for the connection of up to three REGO batteries in parallel, with the capability to expand systems up to 8 batteries using additional combiner boxes for a total capacity nearing 40KWh. Rated for a continuous current of 400A, this unit handles high power demands safely and features exclusive Anderson terminals for simple, plug-and-play connections. Heavy-duty insert terminals accommodate non-REGO components for flexible integration.
$289.00
Owner Satisfaction
4.6
/ 5
Category Rank
6
/ 33
#6 in Power Supply Enclosures
Price vs Category Average
-65%
Below average
Continuous Current Rating
400
/ A
Who it's for
- DIY installers wanting a fast, error-free setup
- System owners prioritizing clean, organized wiring bays
- Off-grid enthusiasts managing high-capacity power banks
Who should skip it
- Users with existing non-REGO power components
- Budget-conscious buyers seeking basic busbar alternatives
- Van lifers with limited interior mounting space
Performance breakdown
System Scalability
Effortlessly expands capacity to 40KWh for demanding off-grid power needs.
Installation Simplicity
Plug-and-play Anderson terminals eliminate complex wiring for quick battery integration.
Current Handling
Robust 400A rating manages high-draw appliances with consistent, reliable power flow.
Component Compatibility
Heavy-duty inserts provide necessary flexibility for mixing non-REGO power components.
Safety Integration
Centralized circuit protection ensures stable performance across the entire battery bank.
Smart Connectivity
Bluetooth and RV-C support offer modern, convenient monitoring for your system.
Key Specs
Continuous Current Rating
400A
Maximum Charging Current
300A
Maximum Discharging Current
350A
Battery Connections
3 per box
System Expansion
Up to 8 batteries in parallel
Total System Capacity
40KWh
Nominal System Voltage
24V
Terminal Types
Anderson and Heavy-duty insert
Features
- Modular design for scalable system expansion
- Simplifies battery bank connection
- Plug-and-play Anderson terminals
- Connects to existing system components
- Centralized circuit protection
- Handles high-power charging and discharging
- Ensures stable performance
- Reliable within the REGO ecosystem
What customers say
The REGO 3 Port Combiner Box earns high marks primarily for its exceptional ease of use. Consumers consistently highlight how this component transforms complex battery wiring into a simple, plug and play process, drastically reducing installation time and potential errors. This simplicity is paired with robust reliability, as users trust the box to manage high amperage loads efficiently and safely within their off grid systems. The overall sentiment confirms that the product delivers significant value by prioritizing user convenience without compromising power handling quality.
Know before you buy
Yes. While the box is optimized for REGO batteries using plug-and-play Anderson terminals, it includes heavy-duty insert terminals specifically designed to accommodate non-REGO components for flexible system integration.
Each individual REGO 3 Port Battery Combiner Box allows you to connect up to three REGO batteries in parallel.
Absolutely. You can scale your system up to a total of eight batteries by daisy-chaining additional combiner boxes, allowing for a total capacity of nearly 40KWh.
The combiner box is rated for a continuous current of 400A, with a maximum charging current of 300A and a maximum discharging current of 350A.
Yes, the unit serves as a centralized hub for circuit protection and includes built-in short circuit protection to ensure safe operation during high-power charging and discharging.
The REGO 3 Port Battery Combiner Box is designed for surface mounting, making it straightforward to install within your power system enclosure or battery compartment.
Still have a question?
Ask Hayley anything about this product before you decide.