Growatt SPH hybrid inverters: models, specifications and warranty

The Growatt SPH TL3 BH-UP series is a family of three-phase hybrid inverters for homes that want solar generation and battery storage in one system. The range runs from the SPH 4000TL3 at 4 kW up to the SPH 10000TL3, rated at 10 kW, all designed for a three-phase 230/400 V supply¹. Every model in the family carries a UPS function with a 10 ms transition, so selected circuits keep running when the grid drops¹. The maker covers the range with a 10 year European service warranty, per its own terms².

Because these are hybrid inverters, they manage both the solar array and a battery, storing surplus generation in the day and discharging it at night, which the maker describes as maximising the solar self-consumption rate³. They sit alongside Growatt's single-phase SPH 3000-6000TL BL-UP family, which serves homes on a single-phase supply⁴. This page covers the three-phase range model by model: the sizes, the specifications, the battery options, the monitoring, the warranty and what owning one means for a household's independence.

Three-phase hybrids from 4 to 10 kW: the SPH family

The SPH TL3 BH-UP series comprises three-phase hybrids with a true UPS function and a high-voltage battery connection⁶. The family is built as a scalable system, in Growatt's own description, with a transformerless topology, an LCD and LED display, natural cooling and an integrated DC switch⁷. The range also carries a VPP (virtual power plant) interface and smart phase-level power export limitation, which matters in the UK where distribution network operators may require export limiting as a condition of connection⁷.

The three-phase design is the defining feature. These inverters connect to a 230/400 V three-phase supply, the arrangement found in larger homes and in properties with three-phase service rather than the standard single-phase domestic supply². For homes on a single phase, Growatt's answer is the separate SPH 3000-6000TL BL-UP family, single-phase hybrids with the same UPS function and 10 ms transition⁴. Network guidance confirms that up to 17 kW of generation can be connected to a single phase supply, so a single-phase home is not barred from a large array, but it needs the single-phase inverter family, not the TL3 models⁸.

Choosing between the SPH 4000TL3 and SPH 10000TL3 by household size

The range steps through named models at 4, 5, 7 and 10 kW. The SPH 4000TL3 carries manufacturer code 00130, the SPH 5000TL3 code 00133 and the SPH 7000TL3 code 00135⁹. The SPH 10000TL3 is rated at 10 kW². Each model has two MPPT trackers, so the array can be split across two roof orientations and still be harvested effectively⁵.

Which size fits which home is a question of load and array rather than floor area. The smaller models suit homes with modest daytime demand and a mid-sized array; one of the larger units takes up to 10.4 kWp of panels, and the largest takes up to 15 kWp, so the bigger inverters are for homes with big roofs, high consumption, a heat pump or a battery large enough to make the extra headroom useful⁵. Oversizing the array against the inverter's output rating is normal, and the array power figure is the hard ceiling.

One specification point worth checking with an installer: Growatt's product pages give two weights for the SPH 7000TL3 and the SPH 10000TL3, 30 kg and 35.30 kg, and the two figures differ, so the mounting and wall suitability should be confirmed against the manual for the exact model⁵. All models use natural cooling, with no fan, which reduces moving parts but depends on free airflow around the unit⁷.

Technical data: efficiency figures, PV input limits and battery details

The headline efficiency figures are strong for a hybrid inverter. Growatt lists a maximum efficiency of 97.6 to 98.2% for the SPH 7000TL3⁵, and a European efficiency of 97.0 to 97.5% for the SPH 10000TL3². The European figure is the more realistic one for a UK system, since it weights efficiency across the part-load conditions a British roof actually spends most of its day in, rather than the ideal full-sun peak.

The family datasheet fills in the shared parameters: transformerless topology, LCD and LED display, an adjustable power factor of 0.8 lagging, a DC switch, grid monitoring and smart phase-level export limitation⁷. Battery compatibility across the family covers both lithium and lead-acid types, with the battery connected on the DC side¹. The system is described as scalable, so a household can start with a smaller battery and add modules later⁷.

UPS backup with changeover below 10 ms

The UPS function is the SPH family's standout feature for energy security. Growatt states a UPS switchover time of under 10 ms for the SPH 4000TL3, the 5000TL3, the 7000TL3 and the 10000TL3, and the family datasheet lists the 10 ms transition for the UPS function across the range⁹. A switchover that fast is quicker than a household's lights can flicker, and quick enough that computers and most appliances ride through a grid failure without resetting.

What the UPS actually delivers depends on the battery and the wiring. The inverter keeps selected circuits running during a grid outage, drawing on the stored energy in the battery¹⁰. That means the backup covers the circuits wired to the inverter's backup output, not automatically the whole house, and it lasts only as long as the battery's stored charge. A household sizing a system for outage protection needs to think about which loads matter, the fridge and broadband rather than the shower, and to size the battery accordingly.

One operating limit to understand: Growatt's support documentation for its off-grid and hybrid inverters describes fault 07, an overload condition, triggered when load power runs greater than 112% and lower than 150% for 10 seconds, or greater than 150% for 2 seconds¹¹. In backup mode, with the grid gone, overloading the backed-up circuits is the most common way to trip the system, so the load plan matters as much as the hardware.

ARK 2.5H-A2 and matching ARK battery storage systems

The SPH family takes a high-voltage battery, and the compatible module is the ARK 2.5H-A2⁵. Its nominal capacity is 2.6 kWh per module, and it is built for modular expansion with an integrated battery management system on board¹⁰. Combined with a hybrid inverter, the battery keeps selected circuits running during a grid outage through the inverter's backup function¹⁰.

Because the modules stack, the practical storage sizes come as kits. Growatt lists an ARK high-voltage battery kit for SPH and an ARK 20.48 kWh battery set, both designed to work with three-phase SPH TL3 BH-UP hybrid inverters¹². The larger set suits homes with heavy evening demand, a heat pump or long outage expectations; the smaller kit is the starting point for a household adding storage to a hybrid system. The family also supports lead-acid batteries for households with existing compatible storage¹.

The battery is covered by the same warranty structure as the inverter: the ARK 2.5H-A2 carries a 10 year European service warranty, per the manufacturer's terms¹⁰. Sizing is covered in more depth in adding battery storage to solar, and the wider question of what storage does for a home's self-sufficiency is set out in solar panels and household energy independence.

Managing your system via ShinePhone and ShineServer

The SPH models work with the free ShinePhone app and the ShineServer portal, connected over Wi-Fi⁵. ShinePhone is Growatt's system monitoring app for users, with simple Wi-Fi configuration, and the family datasheet lists grid monitoring as a standard feature¹⁴. Once the inverter is connected, a household can see generation, battery state and grid activity from a phone, and the ShineServer portal gives the fuller view on a computer.

This is where the dependence sits. The inverter itself runs the solar and battery logic locally, but remote monitoring travels over the household's Wi-Fi and broadband to Growatt's platform. If the router is down or the maker's servers are unreachable, the system keeps working, but the app goes dark. Growatt's wider ecosystem extends this into whole-home energy management through its GroHome system, which is designed to increase a household's rate of PV self-consumption by coordinating loads with generation¹⁵. The monitoring side of any solar system is covered in more detail in monitoring a solar PV system.

A 10 year warranty on every model

Growatt covers the SPH 10000TL3 with a 10 year European service warranty, per the manufacturer². The ARK 2.5H-A2 battery carries the same 10 year European service warranty, per the manufacturer's terms¹⁰, and Growatt's storage kits are described under the same European service warranty structure¹². So the headline position is consistent: 10 years on both the inverter and the battery, as maker-stated terms.

Two cautions apply. First, these are the manufacturer's own stated terms, read from its product pages, and the binding document is the warranty terms supplied with the product at purchase; a household should keep that paperwork. Second, correct installation is a condition of keeping the warranty: Growatt states that installation should be carried out by a qualified installer in line with the manufacturer's manual and the local grid connection requirements⁵. An installation that does not follow the manual is a route to a rejected claim, so the installer's competence is not just a safety matter but a warranty matter too.

Installation, siting and what owning an SPH means

Installation of an SPH should be carried out by a qualified installer in line with the manufacturer's manual and the local grid connection requirements⁵. In the UK that means an MCS-certified installation for the solar side, since MCS certification is what underpins eligibility for export payments¹⁶, and compliance with the G98 or G99 connection process, covered in connecting solar to the grid. Planning is rarely a barrier for roof-mounted panels, but within a conservation area, planning permission is required if the solar equipment is installed on a wall which fronts a highway, meaning roads, public footpaths and bridleways¹⁷.

Siting of the inverter and battery is an indoor question in most UK installations, since Growatt does not state an outdoor enclosure rating for the SPH TL3 BH-UP models on its product pages. The related SPF 6000ES off-grid inverter has an IP65 enclosure for indoor and outdoor installation, but that is a different product and cannot be assumed for the SPH¹⁸. The practical reference for installers is the NAPIT practical guide to solar photovoltaic systems and battery storage, which covers expected performance, PV self-consumption and grid independence, array mounting, cabling, inspection and testing, and the Wiring Regulations¹⁹.

What owning an SPH means for independence is a mixed picture, and it is worth stating both halves. The system stores surplus solar power in the battery during the day and uses it at night, which maximises the self-consumption rate and cuts the volume of electricity bought from a supplier³. Independent guidance puts the value of that plainly: self-consumed solar power is effectively locking in a portion of energy costs at 0p per kWh for the next 25 years²⁰. With the UPS function, the home also keeps selected circuits through a grid failure, a genuine security gain.

The dependence that remains is real too. The home stays connected to the grid and to a supplier for the hours the battery cannot cover, and the export limitation and VPP interface mean the system is designed to cooperate with, not escape, network rules. Monitoring depends on broadband and Growatt's platform. The warranty and firmware depend on the manufacturer's continuing health, and the longest-term value depends on the panels' own lifespan, covered in solar panel warranties, degradation and lifespan. Households weighing the step should also note that a change of ownership of a solar PV installation brings its own administrative requirements, including a new multi-installation declaration under the Feed-in Tariff rules where they apply²¹, and that permitted development rules define stand-alone solar as equipment not installed on a building²². Independent advice on whether solar and storage suit a property is available from sources such as Plymouth Energy Community's Future Fit services²³.