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Household Inverter丨Off-Grid Inverter丨BK-VM-1.5KVA
PRODUCT PARAMETERS
The BK-INV series is a lightweight, wall-mounted off-grid all-in-one photovoltaic inverter designed specifically for urban small-scale PV systems (balconies/roofs), RVs/campers, off-grid low-power rural areas, small businesses (convenience stores, clinics), and emergency backup scenarios.
- Ultra-Compact & Lightweight Design for Flexible Deployment
- Ultra-Wide MPPT Range for Efficient Solar Harvesting
- UPS-Grade Seamless Power Switching
- 2× Surge Power for Heavy Load Startup
- 12V Battery Compatibility & Fast Charging
- Optional Cloud Monitoring for Intelligent Management
- Harsh-Environment Adaptability
- Comprehensive Safety Protection
Description
FAQs
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Description
Product Overview
The BK-VM-1.5KVA is a wall-mounted 230 V off-grid inverter and controller combo unit that integrates an MPPT solar controller, pure sine wave inverter, 12 V smart battery management, and UPS-level switching. With dimensions of just 95 × 270 × 348 mm and weighing only 4 kg, it can be installed on a wall in under 30 minutes, providing 24/7 stable green power for residential, RV, and small commercial applications.
Application
- Urban balconies/roofs
1.5 kW panels + battery capacity up to 5 kWh, achieving 60–80% self-generation and self-consumption.
- RVs/campers
Lightweight 12 V system, 400–600 W panels on the roof, providing uninterrupted power for 1–2 days in the wilderness.
- Off-grid/low-power rural areas
Power water pumps, TVs, lighting, and internet, enjoying modern life even without grid connection.
- Small businesses
Convenience stores, clinics, charging stations, automatic power supply during outages, eliminating the need for diesel generators.
- Emergency backup power
Parallel operation with small gasoline/diesel generators, peak shaving, saving 30% fuel and reducing noise by 50%.
Product Features
- Ultra-wide MPPT
90–430 V input, 2 kW PV power, full-load generation even in low light conditions.
- 10 ms UPS True Switching
Seamless complementarity between grid power, PV, and battery, with zero power interruption for computers.
- Surge 2×Rated
5-second 150% overload output, easily starting inductive loads such as refrigerators and water pumps.
- Battery Full Compatibility
12 V lead-acid & lithium-ion three-stage charging, 60 A maximum charging current, expandable with plug-and-play functionality.
- Cloud Monitoring (Optional)
Built-in 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.
- Lightweight and Portable
4 kg, easily carried with one hand, ideal for RV camping and moving.
Specifications
| Model | BK-VM-1.5KVA | |
| Product Type | Residential photovoltaic inverter | |
| Power Capacity | 1500VA | |
| AC Input | Voltage | 230VAC |
| Voltage Range | 170-280Vac (for personal computers) 90-280Vac (for household appliances) | |
| Frequency | 50 Hz/60 Hz | |
| PV Input | Rated Power | 2000W |
| Maximum Open-circuit Voltage Of Photovoltaic array | 450VDC | |
| MPPT range @ Operating Voltage | 90VDC-430VDC | |
| Rated Voltage | 240V | |
| Number of MPPT | 1 | |
| Output Parameters (PV/Battery mode) | Voltage | 230V±5% |
| Frequency | 50 Hz | |
| Efficiency | ≥91% | |
| Maximum Output Power | 1500W | |
| Switching Time | 10 ms (UPS), 20 ms (household appliances) | |
| Harmonic | 3% | |
| Overload Capacity | 5s@≥150%load;10s@110%-150%load | |
| Mains Mode | Voltage | 230Vac±5% |
| Frequency | 50 Hz | |
| Efficiency | 95% | |
| Battery | Voltage | 12V |
| Charging Method | Three-stage charging | |
| Maximum Charging Current (MPPT) | 60A | |
| Maximum Charging Current (AC) | 60A | |
| Cold Start Voltage | 11.5V | |
| Battery Type | Lead-acid, lithium-ion | |
| Protective Function | Output short circuit, overload, and over-temperature protection functions, etc. | |
| Communication | RS232 | |
| Environment | Operating Temperature | -10℃-50℃ |
| Storage Temperature | -15℃-60℃ | |
| Humidity | 5%-95% | |
| Physical | dimensions （D×W×H） | 95x270x348mm |
| Weight | 4kg | |
FAQs
What is UPS?
UPS stands for Uninterruptible Power Supply and is a device that provides a continuous supply of power to protect critical loads from power failures or fluctuations.
What is the main role of UPS?
The main role of a UPS is to provide a backup power source to ensure that critical equipment can continue to operate when utility power is interrupted or unstable, avoiding data loss or equipment damage.
What are the types of UPS?
UPS is mainly divided into three types: offline, online and online interactive.
How to choose the power capacity of UPS?
When choosing the power capacity of the UPS, you need to consider the total power demand of the load, it is usually recommended to choose a slightly larger than the total load power of the UPS to ensure sufficient standby time.
How is the standby time of a UPS determined?
The standby time of a UPS depends on the battery capacity and load power. Standby time usually ranges from 10 minutes to several hours, and the specific needs can be determined according to the actual application scenario.
