2000W continuous output all in one LiFePO4 solar backup power station 4019Wh UPS emergency power supply for home workshop and commercial off grid use

The YF-4000 is a compact all-in-one energy storage system engineered for backup power and off-grid applications. It integrates an MPPT solar charge controller, a pure sine wave inverter, and a lithium iron phosphate (LFP) battery pack inside a single cabinet, fully pre-tested for straightforward installation and commissioning. The unit delivers 2000W continuous AC output paired with a 4019.2Wh LFP battery and supports dual charging from solar panels and the utility grid.

With a 10ms fast UPS transfer, the YF-4000 instantly switches to battery power when grid power fails, safeguarding critical loads. Grade-A LFP cells rated for 6000 charge cycles deliver stable, long-life performance and excellent thermal safety. Typical uses include household blackout backup, continuous power for medical devices, off-grid workshop power, medium RV and mobile workspace builds, and reliable temporary power for exhibitions, outdoor events, and catering sites. Our factory supports private label, packaging, and accessory bundle customization for bulk and project orders.

• All-in-one integrated cabinet design combining inverter, MPPT charger, and LFP battery pack
• 2000W continuous pure sine wave AC output, compatible with sensitive electronics, motors, and home appliances
• 10ms rapid UPS transfer for uninterrupted power supply during grid outages
• PV input range of 30–400Vdc with up to 3000W solar input and MPPT efficiency up to 99%
• Wide AC input voltage range of 90–280Vac, adapting to unstable grid voltage in different regions
• High-safety LFP battery cells with 6000-cycle life and low maintenance cost
• Optional WiFi monitoring module for remote real-time running data
• Complete multi-protection system: overload, short circuit, over-temperature, battery overvoltage, battery undervoltage, and PV reverse polarity protection
• IP31 dust and drip resistance with operating noise below 55dB
• Portable cabinet structure, easy to move for stationary and semi-mobile power scenarios

The YF-4000 energy storage power station suits a wide range of power backup and off-grid scenarios:

• Essential home backup power to keep refrigerators, lighting, and communication devices running during power cuts
• Stable, uninterrupted power for medical equipment requiring continuous supply
• Practical power source for off-grid workshops, remote cabins, and field working stations running power tools
• Well-suited to medium-sized RV and mobile workspace conversion projects
• Reliable temporary power for exhibition halls, outdoor markets, catering stalls, and outdoor commercial events

We offer flexible customization for bulk distributors and engineering buyers. Branding options include custom logo printing, laser marking, and exclusive housing color selection. Firmware and communication functions can be adjusted to meet special project requirements. Packaging choices include neutral export cartons, custom retail boxes, and branded outer shipping cases. Matching accessory packs — including PV cables, connectors, and adapters — can be supplied together as sales kits. Fleet purchase and engineering project cooperation are welcome.

We provide dedicated pre-sales engineering consultation to help clients select the proper configuration and match system schemes to local grid standards. Complete certification packages, test reports, datasheets, and operation manuals are supplied for customs clearance and product listing. A standard factory warranty covers all bulk orders. Our technical team offers remote diagnostic support, troubleshooting guidance, and spare parts supply, and we can supply training documents for your sales and after-sales teams. Every bulk shipment undergoes strict pre-shipment functional testing to reduce on-site failure risk.

Each YF-4000 unit is secured with thick shockproof foam inside a heavy-duty export plywood carton to absorb vibration and prevent damage during sea or land transport. Standard packing includes the main unit, AC charging cable, PV connection cable, and printed user manual. We support FOB, CIF, and EXW trade terms. Sea freight, air freight, and LCL consolidated shipment are all acceptable for bulk orders. Custom branded packaging can be arranged separately upon request.