5m Comm Line T58
The SolaX 5m Comm Line T58 Communication Cable is the original accessory for connecting the RS485 data line between SolaX Triple Power T-BAT H 5.8 (T58) battery modules. Essential for ensuring proper communication between the master BMS and slave modules in multi-battery configurations. Length: 5 meters.
The SolaX 5m Comm Line T58 Communication Cable is the original SolaX RS485 cable for connecting the data line between battery modules of the Triple Power T-BAT H 5.8 (T58) series. In multi-battery storage systems, communication between modules is as crucial as power wiring: without a stable data signal, the BMS cannot coordinate charging and discharging between units, causing imbalances and potential system errors.
What is the Comm Line T58 cable for?
In cascade configurations of T58 batteries, the RS485 protocol connects the COM2 of the first module to the COM1 of the next module, allowing the master battery's BMS to communicate with all slave modules. This wiring is required by the official SolaX installation procedure whenever an HV11550 battery is added in series to the T58 master.
Technical Specifications
| Type | RS485 Communication Cable (Comm Line) |
| Length | 5 meters |
| Compatibility | SolaX Triple Power T-BAT H 5.8 (T58) and HV11550 modules |
| Application | COM2 → COM1 connection between battery modules in cascade |
| Certification | Original SolaX accessory |
When do you need the 5-meter cable?
The 5-meter length is recommended when battery modules are installed on separate walls, in technical rooms with cable ducts, or when the distance between columns exceeds what is covered by the standard supplied cables (typically 450-600 mm). It ensures tidy wiring without makeshift joints that could compromise the integrity of the RS485 signal.
Frequently Asked Questions
How many Comm Line cables are needed to connect multiple T58 batteries?
You need one Comm Line cable for each connection between consecutive modules. In a master + 3 slave configuration (4 modules total, the maximum for three-phase systems), 3 cables are required: one between the master and the first slave, one between the first and second slave, and one between the second and third slave. The 5-meter length should be chosen when the distance between modules exceeds that covered by the cables included in the kit.
Is the 5m Comm Line cable interchangeable with the one supplied with the battery?
Yes, functionally and in terms of connectors, it is identical to the RS485 cable included in the T58 kit, but with an extended length of 5 meters. It is an original SolaX accessory, so it is 100% compatible with the connectors and RS485 protocol of the T-BAT H 5.8 and HV11550 modules.
Can I use a generic RS485 cable instead of the original SolaX Comm Line?
Technically, the RS485 protocol is standard, but SolaX uses proprietary connectors and shielding specifications calibrated for its own system. Using non-original cables can cause intermittent communication problems, BMS errors, and may void the storage system's warranty. The use of original SolaX accessories is always recommended.
Is this cable compatible with HV11550 batteries (T58 slave modules)?
Yes. The Comm Line T58 cable is compatible with both the T-BAT H 5.8 master battery and the HV11550 slave modules, which share the same RS485 COM1/COM2 interface. It is the correct accessory for any cascade configuration within the Triple Power T58 system.
Do I also need to purchase the power cables (Power Line) along with the Comm Line?
Yes, when expanding the T58 system, you need both the communication cables (Comm Line, this product) and the positive and negative power cables (Power Line A and B). The power cables carry DC current between modules, while the Comm Line carries the BMS RS485 data signals. Both must be installed for the system to function correctly.
