Product Summary

The KJ6.2KW-16KWH is an all-in-one inverter energy storage system that combines a 6.2kW pure sine wave hybrid inverter, an MPPT solar charge controller and a 51.2VDC 16kWh LiFePO4 battery pack inside one floor-standing cabinet. It takes up to 9000W of PV input at 27A and charges from a 230VAC mains supply at up to 120A. When the grid fails, output transfer takes 20ms, so connected loads keep running without a manual restart.

With 16kWh rated energy and 14.4kWh usable at 90% depth of discharge, the unit is built for residential solar-plus-storage, off-grid homes and farms, and small commercial backup in shops, clinics and offices. The system is designed for indoor installation with IP21 protection and operates between -10°C and 50°C.

Key Features

• Inverter, MPPT and battery in one cabinet

  The hybrid inverter, MPPT charge controller and LiFePO4 battery are integrated in a single unit, so installers mount one enclosure instead of three separate boxes with interconnecting DC cabling.

• 6.2kW continuous, 12.4kW peak

  Pure sine wave output with a power factor range of 0.6 to 1 supports inductive and sensitive loads; overload capacity is 5s at ≥140% load and 10s at 100%-140% load in battery mode.

• 9000W solar input at 27A

  The MPPT charger accepts a PV voltage range of 60-500Vdc with a 500Vdc maximum open-circuit voltage, allowing larger high-voltage arrays to be connected without an external charge controller.

• 20ms UPS transfer

  In UPS mode the AC input range narrows to 170-280±3V and the system switches to battery output in 20ms, keeping clinic, shop and office equipment running through grid interruptions.

• 16kWh bank, 14.4kWh usable

  Rated energy is 16kWh at 0.5C and 25°C, with 14.4kWh usable at 90% DOD; 150A maximum charge and discharge current supports long evening runtime and high simultaneous loads.

• Smart BMS with peak shaving

  The BMS monitors battery status in real time and the system supports peak shaving and valley filling, letting owners shift consumption to lower-tariff periods and reduce electricity cost.

Technical Specifications

Models and Options

The current documentation covers one configuration, the KJ6.2KW-16KWH: 230VAC input, 50/60Hz auto-adaptive output, 6.2kW rated power and a 51.2VDC 16kWh LiFePO4 battery.

Buyers who need project-specific configuration can discuss OEM and ODM options with the factory. Customization covers casing printing and coating, retail packaging, firmware parameters, communication protocols and product configuration. Cell type and structural safety components are not open to modification, to protect safety and batch consistency.

Materials and Structure

The battery uses a lithium iron phosphate cathode with a graphite anode in LiFePO4 cells, housed in a steel and aluminium enclosure. The structure is flame-retardant and monitored by a smart BMS that tracks battery status in real time. The integrated cabinet measures 1070 × 520 × 275 mm and weighs 129kg, combining the inverter, MPPT controller and battery in a single floor-standing assembly.

Applications

• Residential solar-plus-storage with evening self-consumption and blackout backup
• Off-grid homes, farms and remote sites requiring a single-cabinet power source
• Small commercial backup for shops, clinics and small offices
• OEM storage projects where one integrated unit simplifies installation and logistics

The system supports grid charging and high-power solar MPPT charging, and can be configured for solar self-consumption, backup or off-grid operation. Confirm daily consumption, maximum simultaneous load, backup duration, PV capacity, communication protocol and local electrical requirements before ordering.

Customization, Compliance and Warranty

The factory operates an OEM/ODM workflow: requirement confirmation, solution design, sampling in 5-7 working days, certification adaptation, mass production and global delivery. MOQ starts from 100 units, with lead time following industry-standard schedules based on order volume. Shipments are supported through conformity procedures such as SONCAP (Nigeria), SASO/SABER (Saudi Arabia), EAC (CIS), INMETRO (Brazil) and SNI (Indonesia).

The LiFePO4 battery pack is covered by UN38.3 Test Report RLCT2604057-01 issued by Rhenish-Lab on 2026-04-24, tested to UN ST/SG/AC.10/11 Rev.7, Subsection 38.3 for transport safety. Products carry a 5-year warranty with spare-parts supply and remote technical support within the warranty period.

FAQ

Inquiry Information

To quote accurately, please share your daily consumption, maximum simultaneous load, required backup hours, planned PV capacity, installation location and destination-market conformity requirements.

Image Filename and Alt Suggestions

• kj62kw-16kwh-all-in-one-front.png — alt: KJ6.2KW-16KWH all-in-one energy storage system cabinet front view
• kj62kw-16kwh-housing-profile.png — alt: All-in-one storage unit standing upright showing full housing profile
• kj62kw-16kwh-inverter-mppt-panel.png — alt: Inverter and MPPT control panel of the 6.2kW energy storage system
• kj62kw-16kwh-wiring-terminals.png — alt: Close-up of terminals and wiring area on the KJ6.2KW-16KWH unit
• kj62kw-16kwh-lifepo4-battery-section.png — alt: LiFePO4 battery section of the all-in-one storage cabinet