Household Inverter丨Off-Grid Inverter丨BK-VM-3.5KVA

Product Overview

The BK-VM-3.5KVA is the next-generation wall-mounted off-grid inverter and controller all-in-one unit, integrating an MPPT solar controller, pure sine wave inverter, intelligent battery management, and UPS-level switching. The unit measures just 465 × 305 × 110 mm and weighs 9.5–10.5 kg, with wall installation completed in 30 minutes; Supports up to 6 units in parallel, scalable to 21 kW, providing reliable 24/7 green power for residential, commercial, RV, and microgrid applications. 

Application

• High-end villas/large residences

5 kWh energy storage + 3.5 kW inverter, achieving 70–90% self-generation and self-consumption.

• Off-grid/low-voltage rural areas

Microgrid-powered pumps, air conditioning, lighting, and networking, eliminating the need for diesel generators.

• Small-scale commercial and industrial use

Convenience stores, clinics, charging stations, automatic power supply during outages, reducing operational costs. 

• RVs/camping

Lightweight 9.5 kg, 1 kW rooftop panel, continuous power supply for 2–3 days in the wilderness. 

• Emergency backup power

Parallel operation with generators for peak shaving, saving 30% fuel and reducing noise by 50%, achieving silent and green backup power.

Product Features

• Ultra-wide MPPT

120–450 V input, 5 kW PV power, full-load generation even in low-light or cloudy conditions.

• 10 ms UPS true switching

Seamless complementarity between grid power, PV, and battery, ensuring zero power interruptions for critical loads.

• Surge 2×rated

5-second 150% overload output, easily starting inductive devices such as air conditioners and water pumps.

• Dual voltage platform

24 V (3.5 kW) battery compatible with lead-acid, AGM, and lithium batteries, with adjustable charging current of 80–100 A.

• Six-unit parallel operation

485 parallel communication, scalable expansion as needed, hassle-free upgrades for villas and convenience stores. 

• Cloud monitoring

RS232 + USB + optional Wi-Fi, real-time monitoring of power generation, consumption, and SOC via mobile app. 

• Harsh environments

Full-power operation from -10°C to 50°C, removable dust filter, suitable for deserts, islands, and high-altitude regions. 

Specifications