Extension MC4 Cable Bluetti A-MC4-NO-UN-L5M — 5 m, 4 mm², red and black

MC4 extension cable Bluetti A-MC4-NO-UN-L5M — 5 m, 4 mm², red and black is a solar connector cable intended to extend photovoltaic connections or link solar panels to charge controllers and inverters. The cable has a 5-meter length and a 4 mm² conductor cross-section, and comes with red and black polarity leads terminated with standard MC4-compatible plug and socket for outdoor and portable solar installations.

Advantages

This Bluetti MC4 extension cable offers a straightforward way to lengthen PV strings and create flexible array layouts without altering panel outputs. The 4 mm² conductor cross-section balances current capacity and flexibility for medium-power solar setups. Standard MC4-compatible connectors ensure compatibility with most panels and in-system devices that accept MC4 terminations, while the red and black polarity marking reduces risk of incorrect connections during installation.

Suitable for

• Extending cable runs between solar panels in string or parallel configurations
• Connecting solar panels to charge controllers or inverters at a distance
• Portable and off-grid solar systems such as camping, RV, or temporary installations
• Outdoor photovoltaic installations where weather-resistant MC4 connections are required

Key specifications

• Cable length: 5 m
• Conductor cross-section: 4 mm²
• Polarity: red (positive) and black (negative) leads
• Connector type: MC4-compatible plug and socket
• Application environment: outdoor photovoltaic and portable solar setups

How to use

Connect the MC4-compatible plug to the corresponding MC4 socket on the solar panel or extension harness, and mate the MC4-compatible socket to the matching plug on the target device such as a charge controller or inverter. Observe polarity: connect the red lead to the positive terminal and the black lead to the negative terminal. Ensure connectors click into place to form a secure, weather-resistant connection. Route the cable to avoid sharp edges and secure it with appropriate clamps or ties to prevent strain on the connectors.

Usage recommendations

For safe and reliable operation, verify that the cable’s 4 mm² cross-section and connector ratings meet the current and voltage requirements of your solar array. Use this extension in systems within the cable’s electrical capacity, protect exposed connections from water pooling, and perform periodic inspections for wear or damage. When installing on permanent rooftop or ground-mounted arrays, ensure proper strain relief and follow local electrical codes and manufacturer instructions for MC4 connections.