5m power line B T58 BAT-INV
The SolaX 5m Power Line B T58 BAT-INV is the original negative power cable for connecting the master battery SolaX Triple Power T-BAT H 5.8 (T58) to the hybrid inverter SolaX X1/X3-Hybrid. Length: 5 meters, with original pre-assembled connectors. Always use together with the Power Line A BAT-INV (positive) to complete the battery-inverter DC circuit.
The SolaX 5m Power Line B T58 BAT-INV is the original SolaX negative 5-meter power cable for connecting the T-BAT H 5.8 (T58) master battery to the SolaX X1-Hybrid or X3-Hybrid hybrid inverter. It carries DC current from the negative terminal of the battery to the inverter’s battery input connector, completing the DC circuit of the storage system together with the Power Line A BAT-INV (positive).
What is the Power Line B BAT-INV used for?
The connection between the master battery and inverter requires certified cables for the DC currents of the T58 system (nominal voltage ~100V, max discharge current 35A). The Power Line B BAT-INV is the specific negative cable for this part of the circuit, with different connectors compared to the BAT-BAT (battery-to-battery) cables. It is the negative twin of the Power Line A BAT-INV and they must always be installed as a pair of the same length.
Technical Specifications
| Polarity | Negative (black) |
| Length | 5 meters |
| Application | Battery-to-inverter connection (BAT-INV) |
| Battery compatibility | SolaX Triple Power T-BAT H 5.8 (T58) — master battery |
| Inverter compatibility | SolaX X1-Hybrid G4, X3-Hybrid G4 |
| Insulation | High resistance for continuous high DC currents |
| Terminals | Pre-assembled with original SolaX connectors |
| Certification | Original SolaX accessory |
When is the 5-meter cable needed?
The standard cable supplied with the inverter for battery connection covers short distances. The 5-meter cable is necessary when the inverter is installed in a different room from the batteries, when the route requires conduits, or when you want to allow for future repositioning. It must always be paired with the Power Line A BAT-INV (positive) of the same length.
Frequently Asked Questions
What is the difference between Power Line B BAT-INV and Power Line B BAT-BAT?
The Power Line B BAT-INV (this product) has connectors designed for the connection between the T58 master battery and the SolaX inverter battery connector. The Power Line B BAT-BAT has connectors for daisy-chaining between battery modules. They are not interchangeable: it is essential to check the correct application (BAT-INV or BAT-BAT) before purchasing.
Do I also need to purchase the positive cable (Power Line A BAT-INV)?
Yes, it is mandatory. The battery-to-inverter connection always requires both poles: positive (Power Line A BAT-INV) and negative (Power Line B BAT-INV, this product). They must be the same length (both 5 meters) to ensure equivalent resistance and proper system operation.
Is this cable compatible with the X3-Hybrid three-phase inverter?
Yes. The Power Line B T58 BAT-INV is compatible with SolaX single-phase hybrid inverters (X1-Hybrid G4) and three-phase (X3-Hybrid G4), which share the same connection standard for T58 batteries. Always check the exact version of the inverter by consulting the SolaX technical documentation.
Can I use generic cables for the SolaX battery-to-inverter connection?
No. SolaX uses proprietary connectors and insulation specifications calibrated for the DC currents of the T58 system. Using non-original cables can cause overheating, electrical arcing, BMS errors, and void the storage system warranty. The use of original SolaX accessories is always recommended.
Is the inverter-side connector already included with the cable?
The Power Line B BAT-INV cable is pre-assembled with original SolaX connectors on both ends: the master battery side connector (T58 negative pole) and the inverter side connector (SolaX battery input). No additional adapters are needed. In some cases, the inverter-side connector may be included in the inverter kit: please check before purchasing.
