SolaX TBMS-MCS0800E BMS for TP-HS50E Batteries
The Solax TBMS-MCS0800E is the BMS (Battery Management System) module dedicated to high-voltage storage systems with TP-HS50E batteries. Compatible with X1-IES and X3-IES hybrid inverters, it manages 1 to 6 battery modules, ensuring cell balancing, over-charge/over-discharge protection and two-way communication with the inverter. Module base included.
The Solax TBMS-MCS0800E is the control unit required for any photovoltaic storage system based on TP-HS50E high-voltage (HV) battery modules. Without this component, the battery modules cannot operate safely and in coordination with the X1-IES or X3-IES hybrid inverter.
What is a BMS and why is it essential?
The Battery Management System (BMS) is the "control centre" of the storage system. The TBMS-MCS0800E monitors the state of each battery module in real time, manages charge and discharge cycles and keeps constant communication between the battery pack and the hybrid inverter. Without a BMS, the batteries receive no protection against over-charge, over-discharge or overheating, with risks to the safety and longevity of the system.
TBMS-MCS0800E technical specifications
| Product code | TBMS-MCS0800E |
| Compatible batteries | Solax TP-HS50E (5.1 kWh, LiFePO4 HV) |
| Compatible inverters | Solax X1-IES (single-phase), X3-IES (three-phase) |
| Manageable battery modules | 1 to 6 TP-HS50E modules |
| Manageable system capacity | 5.1 kWh – 30.6 kWh |
| Max charge/discharge current | 50 A |
| BMS dimensions | 730 × 165 × 150 mm |
| BMS weight | 9.3 kg |
| Module base dimensions | 730 × 75 × 150 mm |
| Module base weight | 3.9 kg |
| Total weight (BMS + base) | 13.2 kg |
| Protection rating | IP65 |
| Supported battery type | High-voltage LiFePO4 |
| Module base included | Yes |
When do you need the TBMS-MCS0800E?
This module is mandatory in any installation using Solax TP-HS50E batteries paired with X1-IES or X3-IES inverters. One BMS per inverter is required: on an X3-IES system of 10 to 30 kWh made up of 2 to 6 TP-HS50E modules, the TBMS-MCS0800E is the control unit that coordinates the whole battery pack. For configurations with more than 4 modules (over 20.4 kWh), a Series Box is also needed to connect the second battery column.
Important: for G4 hybrid inverters (X1-Hybrid G4 or X3-Hybrid G4) the TBMS-MCS0800E-D version is required, which is not compatible with IES inverters.
What is included?
- TBMS-MCS0800E BMS module
- Battery module base (included, 730 × 75 × 150 mm, 3.9 kg)
- Connection wiring for BMS-inverter communication
Frequently asked questions
Is the TBMS-MCS0800E compatible with all Solax inverters?
No. The TBMS-MCS0800E is designed exclusively for the X1-IES (single-phase) and X3-IES (three-phase) inverters. For G4 hybrid inverters (X1-Hybrid G4 and X3-Hybrid G4) the TBMS-MCS0800E-D version must be used. The two models are not interchangeable.
How many TP-HS50E batteries can I connect to a single TBMS-MCS0800E?
The TBMS-MCS0800E manages 1 to 6 TP-HS50E battery modules, for a total system capacity between 5.1 kWh and 30.6 kWh. For configurations with 5 or 6 modules (more than 4 batteries in a single column), the Solax Series Box must be added to connect a second battery column.
Is the battery module base already included with the TBMS-MCS0800E?
Yes. The TBMS-MCS0800E supply includes the battery module base (730 × 75 × 150 mm, 3.9 kg). There is therefore no need to buy the base separately for the first battery column. For multi-column installations, the additional base is supplied with the Series Box.
Does the Solax BMS protect the batteries from over-charge and overheating?
Yes. The TBMS-MCS0800E monitors voltage, current and temperature of each cell inside the TP-HS50E modules in real time. It intervenes automatically in case of over-charge, over-discharge, over-temperature and short circuit, stopping the current cycle to preserve the cells and ensure the safety of the system. Active cell balancing extends the service life of the whole battery pack.
How does the TBMS-MCS0800E communicate with the Solax IES inverter?
The TBMS-MCS0800E connects directly to the X1-IES or X3-IES inverter through the proprietary Solax communication wiring included in the supply. The communication protocol is built into the IES inverter firmware: once correctly connected, the BMS and the inverter recognise each other automatically and the system is operational without additional configuration. The IP65 rating makes it suitable for installations in environments that are not fully protected.
