Is it OK to leave device chargers plugged in all the time? An expert explains – The Conversation

🔍 Summary:

In a recent article by Glen Farivar, a lecturer in Power Electronics at the University of Melbourne, the topic of the risks and costs associated with leaving chargers plugged in is explored. Farivar explains that while chargers are essential for powering our numerous devices, they also consume energy when left plugged in, a phenomenon known as “vampire power.” This standby power might seem negligible for a single charger, but when considering all the chargers in a household, the cumulative energy waste can be significant.

Chargers convert AC (alternating current) from wall outlets to DC (direct current) needed by most modern appliances and batteries. This process involves several components, including transformers and circuits for conversion and regulation. Despite their utility, chargers can degrade over time, especially when exposed to voltage spikes in the electrical grid. This degradation is exacerbated in cheaper, uncertified chargers, which may also pose fire hazards due to inadequate protection.

Modern chargers are designed to minimize standby power and are generally safe, but Farivar recommends unplugging them when not in use to save energy and extend their lifespan. Signs like excessive heat, noise, or visible damage are clear indicators that a charger needs replacing. Overall, while the convenience of always-plugged chargers is undeniable, considering their environmental impact and potential risks is crucial.

📌 Source: https://theconversation.com/is-it-ok-to-leave-device-chargers-plugged-in-all-the-time-an-expert-explains-255016