Description: Usage: Photovoltaic panel and battery dual-purpose grid-connected power generation inverter, which can be connected to photovoltaic panel for power generation, and can also be connected to battery (battery)/lithium battery/communication switching power supply/test power supply equipment/high-power LED drive power aging and grid-connected, for energy conservation and recycling. Features: 1. Innovative MPPT design: built-in innovative speed, improved maximum power point tracking (MPPT) algorithm, high-speed main control chip and power supply, ensuring high-precision capture of sunlight, and output power up to 99%. 2. A new switching switch for solar panel and battery working mode is added (the two modes operate independently, safe and reliable); the knob switch can be adjusted arbitrarily from about 30W to 250W; 3. Support various DC power sources: support all types of photovoltaic modules (voltage within the starting range), various battery power sources such as: lead-acid batteries, solid batteries, lithium batteries, you can use it in various scenes according to your needs, which can save energy for you. 4. It has low-voltage protection to prevent battery capacity fatigue, thus prolonging the life of the battery. 5. DC overvoltage/overcurrent protection, AC overvoltage/overcurrent/overfrequency protection, overtemperature protection, and island formation protection. Specifications: Material: Aluminum alloy + copper Name: 500W Adjustable Inverter Color: Blue PV open circuit voltage: 12V model 16-28VDC PV maximum input power: 500W MPPT tracking voltage: 12V model 12-22VDC MPPT efficiency: ;99% Maximum DC current: 12V model 35A Applicable battery voltage: 12V Voltage low voltage protection value: 11V Maximum adjustable output power: 12V model 250W Minimum adjustable output power: 30W PV mode maximum output power: 500W Battery mode maximum output power: 12V model 250W Output voltage: 220V (185-250VAC) Output frequency: 50Hz (48-52Hz) Conversion efficiency: ;98% Working temperature: -25℃-80℃ Protection class: IP22 Cooling method: Fan Applicable solar panels: Monocrystalline, polycrystalline, and thin film solar panels. Instructions for use: 1. Instructions for customizing energy-saving loads: The regenerative energy-saving load adopts PWM grid-connected inverter technology. This product can be used for aging and testing of various AC/DC, DC/DC power supply units and batteries, replacing traditional resistive loads and energy-consuming electronic loads. While recovering electric energy and saving electric energy, the product avoids the heating problem of traditional energy-consuming loads, greatly improves the living environment, and saves additional expenditure on cooling equipment. 2. The product adopts high-frequency isolation technology, and under the condition of meeting the electrical requirements, the power frequency transformer with high price, large volume and heavy quality is omitted, which effectively improves the comprehensive characteristics of the product. Pure sine wave current feedback, "no pollution" to the grid; 3. Use the sine wave feedback grid-connected inverter discharge method to feed back the energy of the battery or the power of various switching power supplies or chargers to the power grid of your own factory. 4. Working mode The regenerative energy-saving load type is mainly divided into two categories: electronic load mode, battery mode and constant voltage discharge mode. The electronic load mode is mainly used in the load aging of the DC power supply by the manufacturer of the DC power supply, and the grid-connected recovery of various DC electric energy; the battery discharge mode is mainly used in the activation discharge of the battery and the maintenance of the battery. The constant voltage discharge mode is mainly used in motor aging and testing. Constant current discharge mode: mainly used for factory aging or long-term load of DC power supply. In this mode, the system discharges the DC power supply with a constant current at the set current. Constant power discharge mode: This mode is applied to various DC power aging and can simulate constant power load characteristics. The system discharges the DC load with constant power at the set power. Constant voltage discharge mode: This mode is mainly used for charger aging and testing. This mode can simulate the characteristics of the battery, and the charger can be aged in constant voltage mode. The load power recovery efficiency is as high as 86%! Packing List: 1*Inverter 1*AC output line 1*Instruction manual