SolaX Power · Home battery model
Triple Power T-BAT H 5.8
SolaX Triple Power T-BAT H 5.8 is a modular high-voltage LFP battery system with distinct V1/V2 and V3 specifications.
Specifications
| Specification | Value |
|---|---|
| Usable capacity (kWh) | V3: 5.5, 10.9, 16.4, 21.9, 27.4 or 32.9 at the stated 95% depth of discharge |
| Nominal capacity (kWh) | V3: 5.8, 11.5, 17.3, 23.0, 28.8 or 34.6 |
| Cell chemistry | LFP |
| Scalable | yes; one master pack and up to five matching expansion packs for V3 |
| Maximum stack capacity (kWh) | 34.6 nominal for V3 |
| System coupling | high-voltage DC battery for a compatible SolaX inverter |
| Backup capable | yes in a compatible complete system; the battery has no AC backup output by itself |
| Warranty (years) | 10 in the live UK schedule for T-BAT-SYS-HV-5.8 |
| IP rating | V3 IP66; V1/V2 IP65 |
| Operating-temperature range (°C) | V3 charge 0 to 55 without heating or -30 to 55 with heating; discharge -30 to 55, with derating conditions |
| Rated power (kW) | V3: 2.9, 5.8, 8.6, 11.5, 14.4 or 17.3 |
| Maximum power (kW) | V3: 4.0, 8.1, 12.1, 16.1, 20.2 or 24.2; actual power also depends on temperature and state of charge |
Triple Power is used across several SolaX battery ranges. This entry covers the high-voltage LFP T-BAT H 5.8 system, built from a master pack with the BMS and matching HV11550 expansion packs.
V3 extends T-BAT H 5.8 to six sizes
The V3 schedule runs from one 5.8 kWh master pack to a 34.6 kWh nominal system. Each step adds one matching 5.8 kWh expansion pack, producing six listed system sizes. Usable energy is measured at the V3 guide’s stated 95% depth of discharge and 25°C test condition.
Rated power and maximum power are separate declarations, and actual charge or discharge power also depends on battery temperature and state of charge. The battery’s power schedule is not the same as the AC output limit of the inverter it connects to.
V3 is an IP66 system for wall or floor mounting. Its temperature table distinguishes charging with and without the heating function, and it applies current reduction in specified low and high temperature bands.
Earlier V1 and V2 systems use another schedule
The retained UK V1/V2 systems have 5.8, 11.5, 17.3 or 23.0 kWh nominal capacity, 90% depth of discharge, 2.8 kW standard power per pack and IP65 protection. Battery round-trip efficiency is 95% at a one-third C-rate (C/3) and 25°C.
V1/V2 figures do not apply to V3 equipment. The generation appears in the full battery label, and expansion packs need to match the master generation.
Inverter, backup and warranty boundaries
T-BAT H 5.8 is a high-voltage DC battery rather than a complete AC storage system. Charge and discharge limits also depend on the compatible SolaX inverter and permitted module count. Backup requires the inverter’s EPS output plus the installed switching and circuit arrangement.
The live UK warranty schedule places T-BAT-SYS-HV-5.8 in a ten-year group, beginning from the earlier of first installation or nine months after production. The exact generation and applicable terms identify the cover for an individual battery.
Related entries
Manufacturer and reference sources
Brand
Reference type
Home battery model
Last reviewed
31 Jul 2026
Current status
Current in the manufacturer's UK range.