Battery weather resistance test
Generally, the lamp design is about 15 years, while the battery is a weak link. 12V valve controlled maintenance lead-acid battery, its design life is generally five or six years, but in practical applications, it is generally necessary for two or three years. Some even less than a year's life is endped.
For a garden lamp for a design life of 15 years, the battery is 12V36ah, according to 0.6 yuan vah, if the life is two years, each replacement fee is 200 yuan, then at least 6 batteries need to replace at least 6 batteries, Only the battery is taken to add costs 2755.2 yuan. If the battery life can reach 5 years, it is required to replace 3 times in the life period, and the additional cost is 1377.6 yuan, and only the battery can save 1377.6 yuan.
Battery cooling problem
Most of the luminaires are mainly maintained for lead-acid batteries. It uses to fit the structure, the heat dissipation performance is poor. It is a lean supply battery. When charging, the electrolyte temperature is too high, which will accelerate the evaporation It will also make the plate due to over-thermal expansion and housing deformation, more importantly, due to heat accumulation, the battery is thermally out of control.
The battery is an important part of the lamp system, which generally accounts for 10% to 20% of the total cost, and its performance directly affects the reliability and life of the system. Solar lamps are generally installed outdoors, with ambient temperature above 25 ° C, temperature per liter 10 ° C, will be reduced by half. Therefore, maintaining a suitable temperature is very important to battery life.
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