Product Overview
The Growatt SPF 3500-5000 ES / ES Lite series is designed for 48V off-grid solar power systems and is available in 3.5kW and 5kW rated output options.
The inverter integrates an MPPT solar charge controller and provides 230VAC pure sine wave output. It supports lithium and lead-acid batteries and can also operate without a battery, allowing the system configuration to be adapted to different combinations of PV input, utility supply, battery storage, and connected loads.
Depending on the selected model, maximum PV array power ranges from 4.5kW to 6kW, while maximum PV open-circuit voltage is rated at either 450VDC or 500VDC. These model differences should be checked carefully when matching the inverter with the planned solar array.
What Buyers Usually Need to Confirm
Before quotation or model confirmation, buyers normally need to confirm:
- exact model: SPF 3500 ES Lite, SPF 5000 ES, or SPF 5000 ES Lite
- required inverter output power and expected load
- battery type and 48V battery configuration
- solar array power
- PV operating voltage and maximum open-circuit voltage
- required solar and AC charging current
- single-unit or parallel system requirement
- WiFi / GPRS monitoring requirement
- required quantity and destination market
If the PV and battery configuration has already been designed, buyers can also send the solar panel specifications, battery specifications, or system configuration for model checking before quotation.
Model Options at a Glance
| Model | SPF 3500 ES Lite | SPF 5000 ES | SPF 5000 ES Lite |
| Rated Power | 3500VA / 3500W | 5000VA / 5000W | 5000VA / 5000W |
| Battery Voltage | 48VDC | ||
| Battery Type | Lithium / Lead-acid | ||
| Max. PV Array Power | 4500W | 6000W | 6000W |
| MPPT Operating Range | 120–450VDC | 120–430VDC | 120–450VDC |
| Max. PV Open Circuit Voltage | 500VDC | 450VDC | 500VDC |
| Max. Solar Charging Current | 80A | 100A | 100A |
| Parallel Capability | Max. 9 units | Max. 6 units | Max. 9 units |
The three models share the same 48V battery platform and 230VAC pure sine wave output, but their PV input limits, charging capacity, and parallel configuration are not identical. Model selection should therefore be based on the complete system specification rather than output wattage alone.
Flexible Solar, Battery and Utility Operation
The SPF ES / ES Lite series integrates MPPT solar charging and supports flexible power-source configuration for off-grid applications.
Key functions listed for the series include:
- integrated MPPT charge controller
- operation with or without a battery
- configurable grid or solar input priority
- PV and grid power support when available PV energy is insufficient
- scheduled inverter charging and discharging
- optional WiFi / GPRS remote monitoring
- pure sine wave AC output
- parallel operation for capacity expansion
Typical Specifications
The specifications below are based on the supplied Growatt datasheet for this series. Final model designation and technical specifications should be reconfirmed against the quotation and applicable product documentation before ordering.
| Model | SPF 3500 ES Lite | SPF 5000 ES | SPF 5000 ES Lite |
| Inverter Output | |||
| Rated Power | 3500VA / 3500W | 5000VA / 5000W | 5000VA / 5000W |
| AC Output Voltage | 230VAC ±5% | ||
| Frequency | 50/60Hz | ||
| Surge Power | 7000VA | 10000VA | 10000VA |
| Peak Efficiency | 93% | ||
| Output Waveform | Pure Sine Wave | ||
| Transfer Time | 10ms typical / 20ms max. | ||
| Solar Charger | |||
| Max. PV Array Power | 4500W | 6000W | 6000W |
| MPPT Operating Range | 120–450VDC | 120–430VDC | 120–450VDC |
| Independent MPPT Trackers / Strings | 1 / 1 | ||
| Max. PV Input Current per MPPT | 22A | ||
| Max. PV Open Circuit Voltage | 500VDC | 450VDC | 500VDC |
| Max. Solar Charging Current | 80A | 100A | 100A |
| AC Charger | |||
| AC Charging Current | 60A | 80A | 80A |
| AC Input Voltage | 230VAC | ||
| Selectable Voltage Range | 170–280VAC / 90–280VAC | ||
| Frequency Range | 50/60Hz Auto Sensing | ||
| Physical & Operating Conditions | |||
| Protection Rating | IP20 | ||
| Dimensions (W/D/H) | 280 × 125 × 435 mm | 330 × 135 × 485 mm | 280 × 125 × 435 mm |
| Net Weight | 9.2 kg | 12 kg | 9.8 kg |
| Humidity | 5–95% RH, non-condensing | ||
| Altitude | <2000 m | ||
| Operating Temperature | -10°C to 55°C | 0°C to 55°C | -10°C to 55°C |
| Storage Temperature | -15°C to 60°C | ||
Related Growatt Solar Battery
For projects requiring battery storage, see the Growatt Hope 5.0L-B1 51.2V 5.12kWh LiFePO4 Solar Battery.
The Hope 5.0L-B1 provides 5.12kWh rated capacity, CAN/RS485 communication, and support for parallel battery expansion. For use with an SPF series inverter, the required battery quantity, communication method, inverter model, and overall system compatibility should be confirmed before ordering.
Send Us Your Requirements
Send us the required Growatt model, quantity, battery configuration, solar panel specifications, parallel requirement, monitoring requirement, and destination market.
If the exact model has not yet been confirmed, you can also send the PV array, battery, and load specifications so we can check the appropriate sourcing option before quotation.
