May 20, 2025
solar street lamps Battery Capacity and Type
Type: LiFePO₄ over lead-acid for longer lifespan (5–8 years vs. 3–5 years), higher energy density, and better performance in cold/hot climates.
Capacity (Ah): Calculate based on daily energy consumption and backup days.
Example: A 30W lamp running 10 hours/day uses 300Wh/day. With 3 days of backup, a 12V battery needs:Capacity (Ah)=12V×0.8 (depth of discharge)300Wh×4 (days)≈125Ah
3. solar street lamps Controller Quality
Functionality: Must have PWM (Pulse Width Modulation) or MPPT (Maximum Power Point Tracking) charging. MPPT is 30% more efficient in low light.
Protection: Overcharge, over-discharge, and short-circuit protection are essential.
5. solar street lamps Cost and Warranty
Balance Price vs. Quality: Avoid ultra-cheap models with short-lived batteries.
Warranty: Look for 3–5 years on panels/lamps and 2–3 years on batteries.
II. Key Points for Installing Solar Street Lamps
1. Site Selection
Sunlight Exposure: Install panels in areas with direct sunlight for 6–8 hours/day, away from trees or buildings that cast shadows.
Height and Spacing:
Height: 6–8 meters for roads; 3–5 meters for pathways.
Spacing: 20–30 meters between lamps (adjust based on brightness and beam angle).
2. solar street lamps System Testing
Charge Test: Let the panel charge the battery for 1–2 days before first use.
Function Test: Verify automatic on/off, brightness levels, and backup duration (e.g., simulate 3 days of no sunlight to check performance).
5. Safety and Maintenance
Grounding: Ensure the pole is grounded to prevent lightning strikes.
Routine Checks: Clean panels quarterly, inspect wiring for corrosion, and replace batteries as needed.
III.
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