SolaX Triple Power HV11550 Slave Battery 5.8 kWh V2
The SolaX HV11550 V2 is a 5.8 kWh LiFePO4 high-voltage slave module for Triple Power V2 storage: it expands a tower built around a T-BAT H 5.8 V2 master, up to 23.2 kWh (1 master + 3 slaves). 90% DoD, over 6,000 cycles, 10-year warranty, IP65. V2 and V3 do not mix.
The SolaX HV11550 V2 is a 5.8 kWh high-voltage LiFePO4 slave module for the Triple Power V2 storage system. It has no BMS of its own: it expands an existing tower built around a T-BAT H 5.8 V2 master, letting you raise capacity without buying the control electronics again.
What is a slave module and when do you need it?
In a modular Triple Power system the master (T-BAT H 5.8) holds the BMS that manages charging and discharging, while each slave (HV11550) adds capacity. One master drives up to 3 slaves, so the tower scales from 5.8 kWh to 23.2 kWh. Add a slave when your consumption grows — an electric car, a heat pump, more evening self-consumption.
V2 and V3 do not mix
This is the V2 module. The Triple Power range also exists in a V3 generation, and the two cannot be combined in the same tower: a V2 slave requires a V2 master. Always check the version of your existing master before ordering.
Technical specifications
| Model | SolaX HV11550 V2 (Triple Power slave) |
| Nominal capacity | 5.8 kWh |
| Technology | LiFePO4, high voltage (HV) |
| Depth of discharge | 90% |
| Cycle life | Over 6,000 cycles |
| Warranty | 10 years |
| Protection rating | IP65 (indoor or sheltered outdoor) |
| Master required | T-BAT H 5.8 V2 (BMS) |
| Maximum configuration | 1 master + up to 3 slaves = 23.2 kWh |
| Weight | ~68 kg |
Frequently asked questions
Can I use the HV11550 on its own?
No. The slave module has no BMS and cannot work alone: it must be connected to a T-BAT H 5.8 V2 master, which manages the whole tower. On its own it does not charge or discharge.
How much capacity can I reach?
One master manages up to 3 slaves, for a maximum of 23.2 kWh (4 × 5.8 kWh). If you need more, a second independent tower with its own master is required.
Is it compatible with the V3 version?
No. V2 and V3 are not interchangeable and cannot share a tower. A V2 slave works only with a V2 master. Check the version stamped on your existing modules before buying.
Where can it be installed?
The IP65 rating allows floor or wall installation, indoors or in a sheltered outdoor location protected from direct weather. Follow the SolaX installation manual for clearances and mounting.
Who should install it?
Being a high-voltage battery, installation and connection must be carried out by a qualified installer, respecting the manufacturer's procedure and the applicable regulations.
