Disassembly of a standard eBay/China PIR motion sensor solar LED landscape light. Low-cost lighting for home applications. Many similar solar motion LED lights are based on similar designs.
Specifications:
16 LED Solar Power 2ND PIR Motion Sensor Wall Light Outdoor Garden Path Lamp
Solar panel: 5.5V 100mA, 0.55W, 17% eff, polycrystalline silicon
Li-ion battery: 3.7V 900mAh
Switch Pin: turn on/off the light by hand
LED: 16pcs, SMD2835, 1W
Lumens: 300
LED span life: 50,000 hours
Solar charging time: 8 hours
Lighting mode: Dark/DIM/bright
Sensing: 1-3m at 120′ angle.
Working time: more than 12 hours
Bright: motion activate for lighting, 30s.
Auto identify day or night
Safety Features: Over charging, over discharging, over current, short circuit
Solar panel span life: more than 5 years
Stainless Material: ABS+aluminum (sand blasting)
Product size: 132 * 92 * 77 mm
Parts:
- 11S2P solar panel on clear epoxy.
- 1x square Li-ion 900mAh battery pack
- 16x 3528 SMD white LED panel. No resistors.
- Solar/PIR control module. 2x A1SHB (Vishay SI2301) 3.5A 20V P-CH MOSFET (D/N ctrl), PIR sensor, 7130-1 Holtek 3.0V regulator, A2SHB (Vishay SI2302) N-CH MOS (LED ON switch), LP0001 PIR controller (Silvan Chip), SS14 diode (solar to battery), power switch.
Measurements:
Battery: 3.7V Li-ion, ~500mAh measured, no over-voltage shut-off, 2.4V UVLO.
LED panel: 16 LEDs parallel, near full battery (75%), 138lm without lens cover. ~4lm dim mode.
Solar panel: 6.5V open full sun, 116mA short.
Power usage: 126mA LED on, 7.6mA LED dim mode (150 ohms resistor).
Day/night control: No PC LDR sensor, solar panel on dual MOSFET (P-CH) switch, gradual dim to full on. 400lux=dim, 700lux=off. A good ON/OFF level is 40lux.
Recommendation: Works. Standard consumer-level product designed for general use for a few seasons of use. Half as bright as rated. Top screws (6x) insufficiently seadled (add glue). Suitable for consumer use in moderately sunny and warm climates.
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Post time: Feb-05-2017