All-in-One
Inverter + battery integrated
DEYE MJS
SUN-BK250
2500W micro hybrid ESS with 2.56kWh LFP battery, 4 MPPTs, and all-in-one design.
- Power Range: 2500 W
- Battery Capacity: 2.56 kWh
1,100 AEDincl. VAT
Features
Overview
The Deye SUN-BK250 is an all-in-one micro hybrid energy storage system. Featuring 2500W rated AC power, 2.56kWh LiFePO₄ battery, 51.2V nominal voltage, up to 4 MPPTs, 96.5% DC-AC efficiency, <4ms grid-switching, 2500W AC charge/discharge, hybrid grid-tied/off-grid/AC-coupled operation, Bluetooth connectivity, colorful touch LCD & app control, IP65 protection, and seamless system expansion, it's the versatile and smart choice for residential solar energy storage.
Full specifications
Electrical
| Battery Nominal Energy | 2560Wh |
|---|---|
| Battery Nominal Voltage | 51.2V |
| Battery Operating Voltage | 44.8V ~ 57.6V |
| Battery Type | LiFePO4 |
| Battery Voltage Range | 44.8-57.6 V |
| Charging Strategy for Li-ion Battery | Self-adaption to BMS |
| Communication Interface | Wi-Fi,Bluetooth,LoRa |
| Euro Efficiency | 96.0% |
| Grid Regulation | VDE 4105, IEC 61727/62116, VDE 0126, AS 4777.2, CEI 0-21, EN 50549-1, G98, C10-11, UNE 217002 |
| MPPT Efficiency | >99% |
| MPPT voltage range | 20 ~ 55 V |
| Max. AC Input/Output Current | 12.5A /12 A |
| Max. Charging / Discharging Current | 50A |
| Max. Continuous AC Passthrough (grid to load) | 30 A |
| Max. Efficiency | 96.5% |
| Max. Inverter Parallel NO. | 3 pcs (up to 7.5 kW rated output) |
| Max. off grid power | 2500 W |
| Power Factor Adjustment Range | 0.8 leading-0.8lagging |
| Rated AC Input/Output Current | 11.4A/10.9 A |
| Rated PV Input voltage | 42.5 V |
| Safety EMC/Standard | IEC 62619, UN38.3, IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 61000-6-1/2/3/4 |
| Start-up Voltage | 25Vdc V |
| Surge Protection Level | TYPE II(DC),TYPE II(AC) |
| Peak Power (off-grid) | 2 times of rated power,10s W |
| Battery Chemistry | LiFePO₄ |
| Nominal Energy | 2560 Wh |
| Nominal Voltage | 51.2 V |
| Max MPPTs | 4 |
| Max PV Input | 4400 W |
| DC-AC Efficiency | 96.5 % |
| Grid Switching | <4 ms |
| AC Charge/Discharge | 2500 W |
Mechanical
| Dimension ( W × D × H ) | 450 × 210 × 244 (without terminal) mm |
|---|---|
| Installation Style | Floor-Mounted,Stacked-Mounted |
| Ingress Protection(IP) Rating | IP 65 |
| IP Rating | IP65 |
| Display | Colorful Touch LCD & APP |
Environmental
| Max. Operating Altitude | 2,000m |
|---|---|
| Operating Temperature Range | -10°C~55°C ( -20°C~55°C with heating, optional) |
| Permissible Ambient Humidity | 0% ~ 95% ( No Condensing ) |
| Permissible Altitude | 2000 m |
Certifications
- UN38.3
- IEC 62619
- CE
Related Products
Related Articles
Best Solar Inverter for Saudi Homes 2026: Complete Buyer's Guide
Choosing the best solar inverter in Saudi Arabia in 2026? Compare Deye, Sungrow, Huawei & SMA on heat tolerance, SEC compliance, price & warranty. Free quote on WhatsApp.
Read: Best Solar Inverter for Saudi Homes 2026: Complete Buyer's Guide →How to Size a Hybrid Solar Inverter for a Saudi Villa (2026 Guide)
Step-by-step hybrid inverter sizing guide for Saudi villas in 2026 — handle multi-AC loads, battery, and generator backup. Free WhatsApp sizing in 15 minutes.
Read: How to Size a Hybrid Solar Inverter for a Saudi Villa (2026 Guide) →Why Deye Inverters Survive Saudi Heat: IP65, 60 °C Tolerance & Desert-Tested Performance
Can solar inverters survive Saudi summers? Deye's IP65 protection, 60°C operating range, and field data from Riyadh, Jeddah & Dammam installations explained.
Read: Why Deye Inverters Survive Saudi Heat: IP65, 60 °C Tolerance & Desert-Tested Performance →