What should I do if the battery is not charging or charges slowly?

Lithium (LiFePO4) batteries offer longer cycle life (3,000-6,000 cycles vs 500-1,500), higher efficiency, smaller size, and less maintenance. Although the upfront cost is higher, they are more economical long-term. Lead-acid batteries are cheaper but shorter-lived and require regular maintenance. Choose based on budget and expected service life.

Please inspect the package upon delivery. If you find visible damage, deformation, or missing accessories, take photos/videos immediately and contact us. For confirmed shipping damage, we will arrange spare parts reshipment, unit replacement, or refund. Return shipping costs are borne by the responsible party

Inverters feature temperature-controlled automatic cooling fans that only operate when needed, running quietly most of the time. If the fan does not work at all, it may be a loose fan cable connection, a defective fan, or a PCB failure

1. Keep the installation environment well-ventilated and dry; clean the cooling fan and heatsink regularly; 2. Periodically check that terminals are tight; 3. Ensure the display shows normal data; 4. Check waterproof seals for outdoor installations before rainy seasons; 5. We recommend a professional inspection every 6-12 months.

1. Confirm the WiFi is 2.4GHz band (5GHz is not supported); 2. Check that the password is correct; 3. Check whether the inverter is set to night low-power mode—if so, it will auto-recover when DC power returns the next day; 4. Restart both the router and the inverter and try again.

The inverter LCD screen or mobile app will display a specific error code. Common faults include: grid over/under voltage, PV insulation fault, over-temperature, fan failure, etc. Please record the error code and troubleshoot according to the manual. If unresolved, contact technical support with the model and error code