That said, solar technology is viable for charging your mobile devices, but some chargers definitely work better than others, and not all of them are designed to handle any situation. Do solar chargers work for phones? Yes, solar-powered phone chargers will charge your mobile phone, but they usually take longer and only work in bright sunlight. The popularity of solar chargers for cell phones is lower compared to solar water heaters and light. So, you're likely to hear questions like “do solar phone chargers really work?” Due to the short lifespan of a solar-powered charger and the relatively small amount of energy used by small electronics, at this time, most households will not see a difference in energy bills when switching to solar energy for small electronic devices.
Solar chargers usually include multiple ports, but if you connect multiple devices, the output power could be shared between them, slowing down the charging of each device. A power of between 10 watts and 15 watts of power is a good rule of thumb when looking for a solar phone charger. This drops to around 2 watts once the phone is charged and to 0.1 watts when nothing is connected to the charger. At the other end of the scale, really inexpensive solar chargers usually can't produce enough energy or charge fast enough that it's worth bothering.
As expected, solar chargers with built-in battery units will cost a little more, but they are undoubtedly more reliable. While the small form factor of these products is good, the amount of solar energy you get from such a small surface area doesn't make solar cells worthwhile. Phone chargers, even fast chargers, use minimal energy, so a solar panel charger is perfectly capable of charging a phone with ease. The different structure and manufacturing of thin-film solar panels allows them to be extremely flexible, even completely foldable like a sheet of fabric.
MC4 cables allow solar panel strings to be mounted, so good quality old equipment can often be used alongside newer equipment. In recent days, solar chargers for cell phones are making sound on the market due to their adaptability and user-friendly nature. Manufacturers of portable solar devices, most of which seem to sell on a certain Internet retail site “Goliath”, do not publish what kind of battery life can be expected or even storage and operating temperatures, which is necessary information for outdoor enthusiasts, let alone to emergency use. All of the recommended products below have a foldable design, allowing you to place the solar panels on your battery or device.
Most solar chargers have a built-in printed circuit board (PCB) that helps control the output current, indicates battery levels (if there is a built-in battery), and charge status.