Deye Micro Hybrid ESS SUN-BK250-2.56KWH-EU-AM4-32L

Integrated inverter + battery design (1 inverter + 1 LiFePO4 battery, 2.56 kWh): compact, plug-and-play installation via a standard socket
Max. 2500 W AC rated output (peak 2× rated power for 10 sec), with UPS-class switchover ≤4 ms
Flexible expansion: up to 5 AE-F2.56 battery modules per stack (12.8 kWh), max. 40 modules in parallel (102.4 kWh); up to 3 inverters in parallel (7.5 kW)

Advanced BMS

Intelligent BMS that automatically adapts the charging strategy to the battery (auto-adaptation to BMS)
Comprehensive system protection: DC reverse polarity, AC overcurrent, AC overvoltage, AC short-circuit, thermal, insulation resistance detection, and anti-islanding; Type II surge protection (DC and AC)
Battery modules communicate via LoRa, with local monitoring over Bluetooth and remote monitoring via the Deye Cloud app

SMART CONTROL AT YOUR FINGERTIPS

Plug-and-play: connect directly to a standard socket, with wireless zero-export function and ultra-low latency control
Bluetooth Connection: local communication for standalone control, no internet needed
Remote Monitoring & Control: real-time monitoring and management via the Deye Cloud app (Wi-Fi), including 6 customizable charge/discharge time periods and Deye Copilot for dynamic tariff optimization
LED Indicator: battery status (SOC, fault) shown on the battery module LED

Model	SUN-BK250-2.56KWH-EU-AM4-32L
Battery Chemistry	LiFePO₄
Battery Operating Voltage	44.8 V ~ 57.6 V
Nominal Energy	2.56 kWh (2560 Wh)
Max. Charge/Discharge Current	50 A
Rated AC Input/Output Power	2500 W
Max. AC Input/Output Power	2750 W
Peak Power (Off-grid)	2× rated power (for 10 seconds)
Max. PV Input Power	5760 W
MPPT Voltage Range	20 V ~ 55 V
Max. Efficiency	96.5%
Dimensions (W×H×D)	560 × 330 × 210 mm
Weight	30 kg
IP Rating	IP65
Communication	Wi-Fi, Bluetooth, LoRa

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