How to Choose Luminaire :

1.Brightness parameter Lumen.
The brightness of an LED lamp is measured in lumen, not watts.

At present, the Marking watt on the market is not the actual output of the lamp.
For example: solar light mark 1000W, solar panel 30W input, can it balance?As everyone knows,Energy is conserved .How much power does a 1000 watt lamp consume in an hour?How much can a 30-watt solar panel charge in the same amount of time? So,It depens on the actual output of the lights.

For a light source of the same quality, the lamp's actual output is proportional to the brightness.Different light source, the higher actual output of lamp, the brightness is not necessarily higher, depending on the type and quality of LED.It depends on the lumens produced by a single LED.And the 'amplifier gain'.
Example:LED A output 0.05W / Pcs, Lumen 80 / Pcs ;LED B 0.06W / Pcs, Lumen 70 / Pcs;If a lamp used the same quantity LED 50 PCs.than, A lamp's output is 2.5W, 4000 Lumen ;B lamp's output is 3W,3500 Lumen .

Sometimes we use the relative wattage of an incandescent lamp,It is the marking watt.But It's just an estimate.

2.Power consumption : Wattage / W . & V
electrical (A)=W / V,solar panel input Larger, V Smaller, Charge faster ;The Wattage of lamp more higher, the more power it consumes.Solar lamp's actual output is more smaller, used less power ;It is say more working time.

3.Battery's capacity:The Larger the better.It is reflected in the length of using time.

4.In short, LED's Lumen brightness and actual output of lamp consumption,Less Rated voltage of Lamp, Less charging time, long working time ; It is more better.

solar lamp Solar Light Super Bright ;Irradiated area 80-220㎡/lamp

Features:
1. No need to pull wires, easy to install, simply screw the product on the wall;Provide light for your garden, courtyard, aisle, porch, courtyard or driveway;
2.Direct absorption of solar energy, no electricity.
3. Waterproof, heat resistant solar light can adapt to most weather conditions;