--- title: "Growatt SPH4600TL BL-UP Hybrid Inverter: Specs & Datasheet | ComparePV" description: "Growatt SPH4600TL BL-UP 4.6 kW hybrid inverter. Specs: 97.1% European efficiency, 2 MPPT, 550 V max DC input, 27.0 kg, 5 yrs warranty." source: "https://comparepv.com/inverter/growatt-sph4600tl-bl-up" updated: 2026-01-16 --- # Growatt SPH4600TL BL-UP ## Identity - **Manufacturer:** Growatt - **Model:** SPH4600TL BL-UP - **Series:** SPH BL-UP - **Rated AC power:** 4.6 kW - **Type:** Hybrid - **Phases:** Single-phase - **Battery port:** yes ## How it compares Compared against 362 inverters from 3 to 6 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 97.1% | 97.2% | Typical | 148 | | MPPT trackers | 2 | 2 | Typical | 13 | | Max DC input voltage | 550 V | 600 V | Typical | 197 | | Weight per kW | 5.9 | 3.3 | Weak - bottom 13% | 308 | | Warranty | 5 yrs | 5 yrs | Typical | 34 | ## Specification ### AC output - **Rated AC power:** 4.6 kW - **Max apparent power:** 4.60 kVA - **Phases:** Single-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 20.0 A - **Grid frequency:** 50 Hz - **Power factor:** 0.8 leading ... 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 9.00 kW - **Max DC voltage:** 550 V - **MPPT voltage range:** 120 to 550 V - **Start-up voltage:** 120 V - **MPPT trackers:** 2 - **Max input current per MPPT:** 13.5 A - **Max short-circuit current per MPPT:** 16.9 A ### Efficiency - **European efficiency:** 97.1 % - **Max efficiency:** 97.4 % ### Battery - **Battery port:** Yes - **Battery voltage:** 42–59V - **Max charge current:** 86.0 A - **Max discharge current:** 86.0 A - **Backup power:** 4.00 kW ### Physical - **Dimensions:** 456 × 565 × 188 mm - **Weight:** 27.0 kg - **Enclosure:** IP65 - **Cooling:** natural - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 2000 m ### Connectivity and protection - **Interfaces:** Display - **Protocols:** RS485, CAN, USB, RF, WiFi, GPRS - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Warranty:** 5 years - **Certifications:** CE, IEC62109, G98/G99, VDE0126-1-1, AS4777, C10/11, VDE-AR-N4105, UTE C 15-712, EN50438, IEC 61727, IEC 62116, EN 62040, C10/11, NRS 097-2-1 ### Pros - **97% European Efficiency & MPPT ≥99.5%** - The datasheet confirms a peak efficiency of 97.2% and a European efficiency of 97% with MPPT tracking accuracy ≥99.5%. These figures are on par with the mid-range Fronius Symo GEN24 (~97.3% EU), translating to measurably lower conversion losses across a typical daily generation cycle. - **EPS \<10 ms - Instant Backup Switchover** - The Emergency Power Supply switchover time is below 10 ms, meeting IEC 62040-3 Class S UPS requirements and ensuring uninterrupted operation of sensitive loads - routers, NAS devices, and small appliances - without resets or reboots. - **Dual MPPT, DC Vmax 550 V** - Two independent MPPT trackers with a DC input voltage up to 550 V allow two strings with different orientations or tilt angles to be connected without power optimizers, reducing system CAPEX and minimizing potential failure points. - **Battery Scalability up to 26 kWh** - The inverter supports up to four GBLI 6.5 kWh modules (26 kWh total) or up to six ML33TRA 3.3 kWh modules (19.8 kWh), with native LiFePO4 chemistry support - enabling storage capacity to be expanded without replacing the inverter as energy needs grow. - **IP65 Enclosure & Multi-Channel Monitoring** - The IP65-rated enclosure allows outdoor and garage installation without additional weatherproofing. The onboard Wi-Fi module - alongside optional Ethernet/RS485 connectivity and the ShinePhone app - enables full real-time performance monitoring and seamless integration with energy management systems. ### Cons - **No BNEF Tier 1 Status (Bankability)** - Growatt does not appear on the BloombergNEF Tier 1 Power Inverter Manufacturers list (confirmed by manufacturer data: tier\_1\_bankable: false), unlike Sungrow, Fronius, or SolarEdge. This may present a barrier when seeking project financing for commercial and C&I installations where lenders require Tier 1 inverter status. - **Standard 5-Year Warranty** - The base manufacturer warranty is 5 years; extension to 10 years is available but depends on the distributor or a separately purchased service package. By comparison, Fronius includes a 5+5-year warranty as standard and SolarEdge offers 12 years - placing the SPH BL-UP below the premium segment without additional cost. - **Low-Voltage Battery Architecture (42-59 V LV)** - The 42-59 V battery voltage range (48 V nominal) results in high charge/discharge currents - approximately 100 A at 5 kW - requiring cable cross-sections of ≥50 mm² and introducing greater resistive losses. Competing solutions such as the Huawei LUNA2000 and BYD HVS operate on high-voltage (HV) architectures (200-550 V), significantly reducing current levels and thermal losses. ## About this series Growatt SPH BL-UP hybrid inverters are for home installations, combining grid connection with energy storage and backup power. In practice, this means smooth self-consumption management - excess from PV can go to the battery instead of the grid, and when the power fails, the inverter can switch to backup power, maintaining critical circuits. The applied **independent MPPT** facilitates optimization of yield even with panels at different angles or partial shading - each string of modules can operate at its maximum power point. High **European efficiency** translates into significantly better energy production in typical operating conditions, not just in laboratory measurements. Plus convenient **monitoring and communication** via WiFi or Ethernet modules and the app, making it easier to track battery consumption and operation. The series is compatible with energy storage systems (including LiFePO4) and usually offers a long warranty - often up to 10 years, depending on configuration. ## Questions ### What is the switchover time of the Growatt SPH BL-UP to backup power during a grid outage? The Growatt SPH BL-UP switches to battery backup power in under 10 milliseconds. In practice, this means connected devices - such as a router, refrigerator, or lighting - will not experience any perceptible interruption in power supply. This is one of the best switchover times among single-phase hybrid inverters in this price class. ### How many MPPT trackers does the Growatt SPH BL-UP have, and can I connect panels on two different roof orientations? The SPH BL-UP series features two independent MPPT trackers, which means you can connect two separate strings operating under different conditions - for example, one facing south and another facing east or west. Each string is optimized individually, so shading or a different orientation on one roof section does not reduce the performance of the other. ### Which batteries are compatible with the Growatt SPH BL-UP inverter, and does it work with LiFePO4 cells? The SPH BL-UP inverter is compatible with low-voltage batteries (42-59 V), including LiFePO4 chemistry. It natively supports Growatt's own AXE and ALP battery storage series (e.g., AXE 5.0L-C1), but integration with select third-party batteries is also possible via CAN or RS485 interface. It is advisable to confirm compatibility of a specific battery model with your installer before purchase. ### What is the warranty on the Growatt SPH BL-UP inverter, and does it cover operation with an energy storage system? The standard warranty on SPH BL-UP inverters is 5 years, with an option to extend to 10 years depending on the distributor and system configuration. The warranty covers the inverter itself; the Growatt energy storage unit is covered by a separate manufacturer's warranty (typically 10 years on capacity and performance). Detailed terms and conditions should be verified with an authorized installer. ### What is the European efficiency of the Growatt SPH BL-UP, and what does this mean in practice for my installation? The European efficiency of the SPH BL-UP series reaches approximately 97.2%, which is a strong result for a hybrid inverter. European efficiency is a more meaningful metric than peak efficiency because it accounts for operation across the range of load levels typical of Central European climates. In simple terms: for every 1 kWh produced by your panels, you lose on average only about 2.8% of energy in the DC-to-AC conversion process. ### Can the Growatt SPH BL-UP be monitored remotely, and is the application free of charge? Yes, the inverter supports WiFi or Ethernet communication modules (with optional GPRS) and is compatible with the free ShinePhone mobile application and the ShineServer web platform. The application allows you to monitor PV production, battery state of charge, self-consumption, and grid export in real time. Access to basic monitoring is free of charge - with no subscription fees. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/30642121655db00bb0ceb-1133602e5842.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Huawei SUN2000L-4.6KTL](https://comparepv.com/inverter/huawei-sun2000l-4-6ktl) | 4.6 kW | 98.0% | 2 | 10.6 kg | +0.9 pp efficiency, 16.4 kg lighter | | [Huawei SUN2000-4.6KTL-L1](https://comparepv.com/inverter/huawei-sun2000-4-6ktl-l1) | 4.6 kW | 97.7% | 2 | 12.0 kg | +0.6 pp efficiency, 15.0 kg lighter | | [Growatt SPM 4600TL-HU](https://comparepv.com/inverter/growatt-spm-4600tl-hu) | 4.6 kW | 97.6% | 2 | 26.0 kg | +0.5 pp efficiency, 1.0 kg lighter | | [Growatt MIN 4600TL-XH](https://comparepv.com/inverter/growatt-min-4600tl-xh) | 4.6 kW | 97.5% | 2 | 10.8 kg | +0.4 pp efficiency, 16.2 kg lighter | | [Growatt MIN 4600TL-XA](https://comparepv.com/inverter/growatt-min-4600tl-xa) | 4.6 kW | 97.5% | | 10.8 kg | +0.4 pp efficiency, 16.2 kg lighter | | [Growatt MIN 4600TL-XH2](https://comparepv.com/inverter/growatt-min-4600tl-xh2) | 4.6 kW | 97.5% | 2 | 10.8 kg | +0.4 pp efficiency, 16.2 kg lighter | | [SolarEdge SE8K (Three Phase, Delta Grids)](https://comparepv.com/inverter/solaredge-se8k-three-phase-delta-grids) | 4.6 kW | 97.5% | | 16.4 kg | +0.4 pp efficiency, 10.6 kg lighter | | [Fronius Primo GEN24 4.6](https://comparepv.com/inverter/fronius-international-fronius-primo-gen24-4-6) | 4.6 kW | 97.2% | 2 | 15.4 kg | 11.6 kg lighter | --- Source: https://comparepv.com/inverter/growatt-sph4600tl-bl-up