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Shengqi ElectronicsShengqi ElectronicsSOLAR SMART CONTROL

Mains-Complementary Lighting Solutions

Automatic mains direct-supply at low battery — avoids blackouts on cloudy/rainy days

Challenges

Street lights blacking out after long rainy spells?

Critical sections where lighting must never fail?

High battery cost and reluctant to oversize capacity?

Want maximum solar utilization with mains only as backup?

System Components

Solar PV panel (6V / 9–25V)

Mains-complementary controller (12V mains input + MPPT charging)

LiFePO4 battery

LED street light (mains direct-supply at low battery)

Solution Highlights

  • Automatic mains direct-supply at low battery keeps lights on through cloudy/rainy days
  • Mains power configurable via WeChat mini-program (60/80/100W)
  • Solar charging prioritized in daytime to maximize free energy and cut costs
  • MPPT smart charging with Bluetooth mini-program tuning and OTA
  • Ideal for main roads, tunnel entrances, industrial parks and municipal lighting

Selection Guide

  1. Size by light power: 50W → M350B-SD; 60W → M360B-SD; 80W → M380B-SD

  2. Mains connection: 12V mains supplement input; wire S+/BAT+/LED+ to PV/battery/light

  3. Battery capacity can be downsized since mains backs it up — lower PACK cost

  4. Mains power and switch threshold set via mini-program for project flexibility

Mains-Complementary Lighting Solutions

Tell us your project configuration — free selection guidance and sample support.

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