The Deye SUN-18K-SG01LP1-EU-AM3-P is a high-performance single-phase hybrid inverter designed to manage solar PV generation, battery storage, grid electricity and generator power from one integrated system.
Delivering 18,000W rated AC input/output power and up to 19.8kVA apparent power, the inverter is ideal for large homes, estates, farms, guest houses and businesses with higher electrical demands.
The inverter uses a 40–60V low-voltage battery platform and supports up to 380A maximum battery charging and discharging current, allowing it to work with appropriately sized high-capacity lithium battery banks.
Key Features
18kW rated single-phase hybrid inverter
Model: SUN-18K-SG01LP1-EU-AM3-P
40–60V low-voltage battery system
Lithium-ion and lead-acid battery support
380A maximum battery charge/discharge current
Self-adapting lithium battery BMS charging
2 battery inputs
3 MPPT solar trackers
Supports 2 + 2 + 2 PV strings
Maximum PV access power: 36,000W
Maximum PV input power: 28,800W
Maximum PV voltage: 500V
MPPT range: 150–425V
18,000W rated AC power
19,800VA maximum apparent power
2× rated off-grid peak power for 10 seconds
Up to 16 units can be connected in parallel
Supports multiple batteries in parallel
AC coupling support
Generator energy-storage support
6 programmable battery charge/discharge time periods
Colour LCD display
Wi-Fi monitoring
RS485 communication
CAN communication
IP65 protection
Type II DC and AC surge protection
NRS 097 listed in the manufacturer’s grid regulations
5-year / up to 10-year warranty depending on installation country
Deye’s official datasheet confirms the parallel capability, programmable charging periods and 380A maximum battery charge/discharge capability.
Battery Specifications
Battery Type: Lead-acid or Lithium-ion Battery Voltage Range: 40–60V Maximum Charge / Discharge Current: 380A Lithium Charging Strategy: Self-adaption to BMS Number of Battery Inputs: 2
The dual battery inputs and high 380A battery current capability make the inverter particularly suitable for large lithium battery banks where substantial power is required.
Solar PV Input Specifications
The Deye 18kW provides significant PV capacity for large solar installations.
Maximum PV Access Power: 36,000W Maximum PV Input Power: 28,800W Maximum PV Input Voltage: 500V PV Start-Up Voltage: 125V MPPT Voltage Range: 150–425V Rated PV Input Voltage: 370V Maximum PV Operating Current: 36A + 36A + 36A Maximum PV Short-Circuit Current: 54A + 54A + 54A Number of MPPT Trackers: 3 PV Strings: 2 + 2 + 2
Triple MPPT Solar Design
The inverter features three independent MPPT trackers, each supporting two PV strings.
This configuration provides excellent flexibility when designing solar arrays across:
Different roof orientations
Multiple roof sections
East/west solar arrays
Different PV string layouts
Large commercial or residential rooftops
Each PV array must still be designed within Deye’s allowable voltage and current limits.
AC Input & Output
Rated AC Input / Output Active Power: 18,000W Maximum AC Apparent Power: 19,800VA Rated AC Input / Output Current: 81.9A / 78.3A Maximum AC Input / Output Current: 90A / 86.1A Rated Voltage: 220V / 230V Grid Connection: L + N + PE Grid Frequency: 50Hz / 60Hz Power Factor Adjustment: 0.8 leading to 0.8 lagging Total Current Harmonic Distortion: <3% at nominal power
Powerful Off-Grid Performance
The Deye 18kW supports peak off-grid output of twice its rated power for up to 10 seconds.
This provides increased capacity for short-duration starting loads such as:
Pumps
Motors
Compressors
Air-conditioning equipment
Other appliances with high start-up demand
The battery bank and electrical installation must be capable of supporting the required surge current.
Generator Integration
The Deye hybrid inverter supports storing energy supplied by a compatible diesel or backup generator.
This gives users additional flexibility in locations where grid power is unreliable or where extended backup periods are required.
A correctly configured system can combine:
Solar PV
Battery storage
Grid electricity
Generator power
into one integrated energy-management solution.
AC Coupling
The Deye 18kW supports AC coupling, making it suitable for retrofitting certain existing grid-tied solar installations.
This can be useful when adding battery storage and backup capability to an existing solar system.
Correct system design and compatibility must be confirmed before installation.
Programmable Energy Management
The inverter allows up to 6 programmable time periods for battery charging and discharging.
This allows the system to be configured for strategies such as:
Solar-first operation
Battery-first operation
Scheduled grid charging
Peak-period battery use
Off-peak grid charging
Backup reserve management
Time-of-use electricity optimisation
Parallel Operation
For larger energy requirements, Deye supports up to 16 compatible inverter units operating in parallel for on-grid and off-grid applications.
The inverter also supports multiple batteries connected in parallel.
Parallel systems must be designed and commissioned according to Deye’s installation requirements.
Efficiency
Maximum Efficiency: 97.6% Euro Efficiency: 96.5% MPPT Efficiency: >99%
Monitoring & Communication
The Deye 18kW provides:
Colour LCD display
Wi-Fi
RS485
CAN communication
These communication options enable monitoring and integration with compatible battery management systems and Deye monitoring platforms.
Integrated Protection
The inverter incorporates multiple electrical protection features, including:
DC reverse polarity protection
AC output overcurrent protection
Thermal protection
AC output overvoltage protection
AC output short-circuit protection
DC component monitoring
Anti-islanding protection
DC switch
Insulation impedance detection
Residual-current detection
Optional AFCI protection
Surge Protection
DC: Type II AC: Type II
