How to buy a Low Cost But good quality can be 5 year warranty?

Guarantee time for LED Products:

Most Led products has warranties on the market range from 1 year to 5 years,
with a 2-year warranty and a 3-year warranty most common.
The difference is mainly based on different quality products offering different prices.

The most important factor decide the life of LED products is the lamp + power supply

Led Life time: Chip Size and hot dispel
Power Supply Life Time：depends more on the service life of the electrolytic capacitor.

Today we will just talk about the five-year warranty.
The price of most 5-year warranty products on the market is very expensive, because: If the factory really wants to provide a 5-year warranty
First, the lamp bead should be upgraded. Secondly, the heat dissipation should be fully considered. The most important power supply solution will definitely improve.

LED power supplies mainly included with several firmwares (PCB boards, transformers, resistors, Mofet Tube, IC and electrolytic capacitor and etc.).
Decide the life time of driver mainly depends on the electrolytic capacitor, because the electrolytic capacitor is the only liquid device that needs to be repeatedly charged and discharged. when the use time reach, inside liquid used out, then the driver also will not work.

The electrolytic capacitors have a life span of 105°, from 3000, 5000, 8000, 10000, 11000, and so on.
Electrolytic capacitors reduce operating temperature by 10° and life time increase double.

We use 12 hours a day as an example, 365 days a year, 12*365*5=21900 hours
The 5-year service life requires LED lights to operate for at least 2,1900 hours.

Calculated with 11000 hours of electrolytic capacitors, the operating temperature of the power supply should not exceed 95 degrees. Different lamps use different environments and different working temperatures
The external power supply has lower temperature requirements than the built-in power supply, and the outdoor is lower than the indoor requirement usually.

Normal power supply temperature rise is controlled at 25-30°, some bad one can reach to 35° or more

Understand these reasons, we know that if I need to have a service life of more than 5 years, then do not need to completely replace the different power supply and lamp beads. I just need to upgrade the lamp bead level and the electrolytic capacitor of the power supply and the control IC on the basis of the existing lamps. For professional engineering. This problem is not a big problem in the product customization factory. Just upgrade the electrolytic capacitor and control IC, use the large size chip properly, and make the 5-year warranty at the existing price. No need to add too much cost.