What is a solar rechargeable watch?
The good thing about solar rechargeable watches is that there is no need to replace batteries.basically”There is no such thing.
regularlychargingBy doing this, the watch will continue to run semi-permanently without the need to replace the battery.
If you only hear this, you might think it's convenient and easy, but there are just a few things to keep in mind.
I talked about the built-in rechargeable battery in the first part, but it cannot be used forever.
For normal batteriesReplace once every 2-3 yearsSince it is necessary to do so, it will last much longer than that.
It is said that a rechargeable battery alone can last 10 to 20 years.
Therefore, it seems that the waterproof packing and the machine itself will reach the end of their lifespan before the rechargeable battery.
After that, we recommend that you keep in mind to charge the battery fairly frequently.
When charging the battery, we recommend that you place it near a window and use sunlight to charge the battery, rather than using the light in your room.
By doing so, when you want to use it, the battery runs out and you have to charge it in a hurry! You can prevent this situation!
(Once the battery runs out of charge, it may take several hours to several days to start working again.)
Based on the above, I would like to summarize the solar rechargeable watches.
・Although the battery does not need to be replaced, the lifespan of the internal machinery and packing is not forever.
・You need to be careful when charging.
・When charging, it is difficult to use the lighting in the room and it is necessary to absorb sunlight.
・Even if you deduct these points, it is very convenient because you can continue using it for a very long time by just charging it when you notice that you are not using it.
Be careful when charging
Finally, when exposing directly to sunlight and in other cases.difference in light amountI would like to talk about this.
・Direct sunlight in midsummer Approx.100,000lux
・Cloudy day10,000lux
・From fluorescent lights5cmDistance (30W) Approx.10,000lux
・From fluorescent lights20cmapprox.３０００lux
・Ceiling light for a bright room Approx.700lux
Some people think it's okay if you leave it in a bright room.
Compared to sunlight, it reallyDifference in light amount more than 100 timesConsidering that it takes a considerable amount of time even with sunlight.
I hope you understand that it is difficult to charge using a ceiling light in your room.
As a guideline, if you charge it by a window during the day about once a month, you will be able to use it without stopping.
If you have an LED charger, you can solve the problem of insufficient charging even on bad weather days or in environments where sufficient charging cannot be done, such as indoors.
LED solar chargerhere
Finally
I have talked about solar radio-controlled watches twice so far.
If you understand how to use it, you will be able to use it very conveniently for a long time.
If you are looking for convenience, we recommend a solar radio-controlled watch!