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Yuyao guys use 20 yuan DIY solar battery
The story begins with an innovative project inspired by necessity. Cai Yong, a young electronics enthusiast in his early thirties, found himself troubled when his elderly family members frequently forgot to charge their phones. This led to moments of distress as they would unexpectedly lose connection. Determined to solve this problem, Cai Yong decided to explore a creative solution.
Using resources available online, including some e-learning materials and purchases from Taobao, he managed to create a solar-powered automatic charger for less than 20 yuan. The components included a solar panel costing 10 yuan, a USB cable for 3 yuan, a power adapter for 2 yuan, and additional small parts totaling another 5 yuan. This simple yet effective device charges phones, MP4 players, LED lights, and other portable electronic devices using sunlight.
Cai Yong shared his creation on the Yuyao Forum, where it quickly gained traction among users. His post has already received over 3,593 views and 70 comments since its initial posting. Many forum members expressed interest in learning how to build their own solar chargers, prompting Cai Yong to provide detailed instructions complete with images.
His efforts earned him the nickname "Technology House" due to his knack for sharing technical knowledge online. When asked about the key component, Cai Yong emphasized the affordability of the solar panel, which he purchased for just 10 yuan. These panels, originally intended for automotive applications like supplementing car batteries, are now sold at discounted prices due to surplus stock. He highlighted how scavenging the web for overlooked items can yield significant benefits when repurposed creatively.
The solar charger outputs 18.8 volts but can be converted to a standard 5-volt output compatible with USB ports. While charging times vary depending on sunlight intensity—about five hours during midday—it remains highly practical for emergencies or reducing electricity usage. Encouraged by feedback, Cai Yong recently published step-by-step guides complete with visual aids, enabling others to replicate his design easily.
Looking ahead, Cai Yong is working on developing more powerful solar solutions capable of charging larger appliances such as electric vehicles. Should this project succeed, he plans to announce it promptly and share the details with the community. His endeavors exemplify how resourcefulness and determination can lead to impactful innovations accessible even within tight budgets.