Battery Storage
Solax Triple Power 5.8kWh Master V3
High-voltage 5.8kWh master battery for Solax X3-Hybrid and X1-Hybrid inverters. Stackable up to 23kWh.
£1286.48 ex VAT
How it scores
Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.
Specifications
- Chemistry
- LiFePO4
- Weight kg
- 52
- Usable kWh
- 5.5
- Warranty years
- 10
- Ac or dc coupled
- DC
- Inverter built in
- No
- Round trip eff %
- 96
- Depth of discharge %
- 95
What I noticed
The Solax Triple Power 5.8kWh Master V3 is the third-generation high-voltage LiFePO4 battery designed to pair with the Solax X-Hybrid inverter range. As a 'master' unit it contains the BMS — pair with Triple Power Slave units to stack up to 23kWh total capacity in a single string.
High-voltage architecture (vs 48V LV systems) gives slightly better round-trip efficiency at the cost of needing more careful install. The V3 generation is the current revision with improved cell chemistry and a 10-year warranty.
Who it suits
Installs already running or planning a Solax X-Hybrid inverter. The high-voltage architecture is best for larger systems (10kWh+) where the slight efficiency gain compounds into meaningful savings.
What I'd watch for
Solax-specific — not compatible with other hybrid inverter brands. Requires both Master and Slave units for capacities above 5.8kWh (additional cost per kWh). Lower UK installer familiarity than Pylontech.
Triple Power 5.8kWh Master V3 head-to-heads
Side-by-side scoring vs each alternative in our shortlist.
Other Battery Storage on my shortlist
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