Mini All-in-One Energy Storage System – MSF-250W/500W/1kW | Portable Solar Power Station
Feb 13, 2026
Mini All-in-One Energy Storage System – Portable Solar Power Solution by ONESUN
As outdoor camping becomes increasingly popular and demand for reliable home backup power continues to grow, a truly plug-and-play, portable energy storage system is becoming essential for modern households and light commercial applications.
The Mini All-in-One Energy Storage System is a highly integrated smart power solution designed to meet today's off-grid and emergency energy needs.

As a world-recognized battery manufacturer, ONESUN leverages years of experience in lithium battery and energy storage system development to introduce the MSF Series Mini Energy Storage System, delivering efficient, safe, and portable OEM & ODM battery solutions to global customers.
Three Models to Meet Different Power Needs
The MSF Series includes three core models:
* MSF-250W1kWh
* MSF-500W2kWh
* MSF-1kW2kWh
With multiple power and capacity configurations, these portable solar power stations are ideal for:
* Home emergency backup power
* Camping and outdoor activities
* RV and van life energy supply
* Small shops and mobile businesses
* Remote or off-grid applications
Whether powering lights, laptops, routers, small appliances, or essential home devices, the MSF Series delivers stable and reliable energy anytime, anywhere.

All-in-One Integrated Design – Compact and Efficient
The MSF Mini Energy Storage System features a fully integrated structure that combines:
* Built-in PV MPPT solar charge controller
* Pure sine wave inverter
* Intelligent control system
* High-performance lithium battery with advanced BMS
This all-in-one design integrates solar charging, energy storage, inversion, and smart control into one compact unit.
Users can quickly build a small independent BESS (Battery Energy Storage System) without complex wiring or additional equipment. It is simple to install, easy to operate, and ready to use.

Stable Performance with Advanced Safety Protection
The MSF Series uses a pure sine wave inverter output, ensuring compatibility with sensitive electronic devices and providing strong load capacity with smooth, stable performance.
Multiple protection systems include:
* Overcharge protection
* Over-discharge protection
* Short-circuit protection
* UPS fast transfer time (<20ms)
In case of sudden power failure, the system switches instantly, ensuring uninterrupted operation of critical devices.
Low Noise Operation – Ideal for Indoor and Outdoor Use
Designed for comfort and convenience, the MSF Series operates at ≤40dB noise level, making it suitable for home environments, bedrooms, offices, and outdoor camping sites.
Its compact and modern design blends functionality with aesthetics, offering both portability and durability.
| Model | MSF-1000W2KWH | MSF-500W2KWH | MSF-250W1KWH |
|---|---|---|---|
| Solar Input Data | |||
| Efficiency | >90% | ||
| Charging Method | MPPT | ||
| PV Voltage Range | 11-55V | 12-50V | 12-36V |
| Max. PV Power | 550w | 450w | 200W |
| AC Input Data | |||
| Voltage Range | 90-280VAC (45-65Hz) | 176-264VAC (50Hz±5%) | |
| Max AC Charging Current | 160A | 80A | 80A |
| Max Charging Power | 1000W | 500W | 250W |
| AC Output Data | |||
| Rated Power | 1000W/1010VA | 500W/500VA | 250W/250VA |
| Rated Voltage | 220V | 220V | |
| Output Voltage Range | 230±5VAC | 210-230VAC | |
| Output Frequency | 50±0.5%Hz | 50Hz / 60Hz | |
| Output Waveform | Pure Sine Wave | Pure Sine Wave | |
| Efficiency | ≥89% | ≥85% | ≥89% |
| UPS Switching Time | ≤20mS | ≤10mS | |
| Battery | |||
| Battery Type | LiFePO4 | ||
| Cycle Life | ≥6000 Times & @ 80%DOD & 0.5C, 25℃ | ||
| Voltage | 6.4V | ||
| Specification | 2009.6WH | ||
| Rated Charger Battery Voltage | 7.25V | ||
| Overcharge Protection Voltage | 7.3VDC | ||
| General Data | |||
| Warranty | Inverter 1-year; LiFePO4 Battery: 2-Year / 5-year Customized | ||
| Inverter 2-year; LiFePO4 Battery: 2-Year / 5-year Customized | |||
| With 4G-WIFI | Optional | ||
| With PayGo | Optional | ||
| Operating Temperature | -20℃~+40℃ | ||
| Storage Temperature | -25℃~55℃ (LiFePO4 Battery: -10℃~50℃) | ||
| Operating Humidity | 20%~90% RH (Non-condensing) | ||
| Dimensions (W*D*H) | 265*205*310mm | ||
| Safety Standard | CE: IEC 61000-6-3:2021; IEC 61000-6-1:2019; IEC 61000-3-2:2009+A1:2021; EN61000-3-3:2013+A2:2021+AC:2022, UN38.3, MSDS, IEC62368, IEC62400 | ||
Multiple Output Ports – Flexible Power Anywhere
The system supports:
* Solar panel input
* 5V and 12V DC outputs
* Multiple AC output ports
The portable configuration allows easy charging and power distribution wherever needed. It functions as a compact energy hub - keeping your power and connectivity running at all times.
Certified for Global Markets
The MSF Series is fully certified:
✅ CE Certified
✅ UN38.3 Tested (Approved)
These certifications ensure compliance with international safety and transportation standards, making the system suitable for export to Europe, Africa, the Middle East, and the Americas.
Professional OEM & ODM Energy Storage Solutions by ONESUN
With over 10 years of lithium battery manufacturing expertise, ONESUN provides more than standard products. We offer comprehensive OEM & ODM customization services, including:
* Structural and appearance customization
* Capacity and power configuration optimization
* Communication protocol customization
* Private label branding and packaging design

Our goal is to help global partners develop competitive, differentiated energy storage solutions and accelerate market expansion.
The Mini All-in-One Energy Storage System is more than just a portable power station - it represents the future of clean, reliable, and intelligent energy living.
ONESUN remains committed to innovation, quality manufacturing, and delivering high-performance solar battery storage solutions to customers worldwide.
Article Source: Lithium battery manufacturer - ONESUN China
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