Don't buy flashlights or crank chargers. Buy one and try it. I have another one here if you want it, I'll give it to you. I just bought it and it looks cool for 10 minutes and try it.
If it is really difficult to use electricity in your home, I suggest you install a home solar power generation system. To be honest, it is very expensive. From what you said, your father only uses it. for lighting and watching television. You can put together a 500w or 1000w one for 1.5w-3w. The solar lifespan of monocrystalline silicon and polycrystalline silicon is approximately 15 to 20 years.
On a sunny day, this can definitely cover consumption for about 3 days
You can apply to relevant local government departments for subsidies. There are state subsidies.
Think about it yourself
I will buyer manual power generation and solar power generation on Taobao. Who used it? Which is the most powerful?
It is recommended to use a solar charger. Charging is more stable than a hand crank charger and requires no effort on your part. As long as you place it in the sun during the day, it may be possible. be easily charged, even if you run outside. Just hang it around your neck or bag and you're ready to go. If cranked, not only does it take up space, but the speed when cranked by hand is also quite unstable, which has a greater impact on the battery. Therefore, it is recommended to use solar energy and the price is not too expensive.
Which stores sell crank flashlights or solar flashlights? Urgent~~
Manual power generation and solar power generation have their propres advantages and disadvantages. Each production capacity has its own advantages and disadvantages.
Since the sizes are different, the power generation is different, and the products are diverse, it is not easy to answer your question of how much power can be generated in a day. Sellers can usually only provide reference times for charging your phone, but can't tell you directly how much power it can generate.
Manual power generation is mainly reserved for emergencies, because these products are small and have low power output. Many products claim that manually charging for 5-10 minutes can support 2 minutes of calls, so you want to do that. fully charge your phone. It is difficult to produce electricity. The difficulty is that you have to keep turning on the power at homen for more than 5 hours. Can you stand it?
If you choose a solar charger with a long body and a large area of light-receiving silicon plate, its charging performance will be ideal. Charging for 5-10 hours under sufficient sunlight can satisfy more than 24 hours. to use. The so-called large surface area means that the surface area of the silicon solar panel exceeds the surface area on the front of a pack of cigarettes. The price is between 100 and 400 yuan. Charging performance is not ideal, but it can be used as a toy.
It is recommended to choose a solar cell phone charger. It is better to have a hand-cranked power generation function, which can protect you from rainy and snowy days. In particular, you should choose one with. a voltage stabilization output function to prevent the charging current from rising and falling.
Some solar cell phone chargers have built-in rechargeable batteries. You can precharge them in the sun when you have free time, or you can fully charge them with AC power or a computer USB port. your phone needs charging, you can charge it in advance. Can be used directly, instead of having to enjoy the sun on site. This is also a more user-friendly feature. The price is around 100 yuan.
I have to remind you that although solar cell phone chargers are worse than hand-cranked ones, the final charging effect is still not as good as direct AC charging. If you need to do outdoor activities for a long time, it is recommended to buy a better one, costing three to four hundred yuan. If you're just worried about not being able to find an outdoor charging station from time to time, then an ord chargerInary worth around 100 yuan should be enough.
I will not provide specific models. You can search on Taobao and pay attention to other buyers' reviews of the product. In short, my opinion is that neither crank nor solar power are particularly practical and cannot be compared to mains charging. It might be more practical to purchase more replacement cell phone batteries. Most cell phone batteries only cost 20 to 30 yuan each.
I didn't find it in the mall, but someone was selling it on the train. I once bought a hand-cranked one, which worked fine at first, but after a while it wouldn't light no matter how hard I turned it, just like lighting a match. The technology is immature, which may be why malls don't sell it. I haven't used solar, so I don't thinknot that it will work. Battery capacity may be an issue.