It’s no surprise that electronic appliances use electricity when they’re on. What may come as a surprise, however, is that all of our devices continue to use electricity when they’re switched off. When something is plugged into an electric outlet, it will use up at least a small amount of energy.

The short answer: Yes, it’s a good idea to switch off appliances at the wall when they’re not in use and when you go on holiday. It’s not going to make you rich, but it will save you money – and it’s better for the environment.

According to the Department of the Environment and Energy, appliances that aren’t switched off (so they’re in standby power mode) can account for about 3 per cent of your energy bill. “Basically if you don’t need the thing turned on at the power point, turn it off at the power point. It’s still a good motto to follow.”

Yes, if current is flowing it is being consumed. If you turn on the light switch and leave the room you are consuming and possibly wasting electricity. If you turn on the light switch but there is no bulb present then no current is flowing, no electricity wasted.

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Did you know that those gadgets — the ones that are always plugged in — are constantly adding to your electric bill? It’s called phantom power use: Even when not turned on, these devices are using power just by being plugged in.

No, unused outlets do not consume electricity, but that doesn’t mean you can’t lose energy through them. As already stated in the comments, they are referring to air drafts. The air leaks from all around the socket and past the wall plate, not just through the plug holes.

“Do not leave your phone connected to the charger for long periods of time or overnight.” Your battery will automatically stop charging when it’s full, but in some cases, once it drops to 99%, it will need more energy to get back to 100. This constant cycle eats away at your battery’s lifespan.

The optimal place is for it to be between 40% and 80% as much as possible. So, if you’re going for optimal, then you’re letting it get way too low and then charging it way too high.

Specifically, if you often charge your phone overnight or keep it plugged in for hours after it’s reached 100%, you’re accelerating the aging process of lithium-ion smartphone batteries. No matter what you do, your phone’s battery capacity — which translates to its lifespan — will degrade as you use it.

The phone takes only the current it can handle. Consequently, when you plug a fast-charging phone into a conventional phone charger, it will charge at a slower rate. If you plug the cable that came with your phone into the USB port of any phone charger, it should work safely.

In our tests, both iPhones and Android smartphones used significantly less battery power with battery-saver mode enabled—as much as 54 percent, depending on the phone we used. While both airplane mode and low-power mode conserve battery life, they do so at a heavy price.

Manufacturers that do recommend calibration often calibrating the battery every two to three months. This helps keep your battery readings accurate. However, if you don’t calibrate your battery regularly, you may eventually find your laptop suddenly dying on you when you’re using it—without any prior warnings.

97% health is pretty much a brand new battery. So no I sure wouldn’t replace it. Apple recommend to ensure that you don’t have unexpected shutdowns and everything is working as it should replacing the battery when you get below 80% health. The message about taking it in for service comes at 79% health.

A battery will have lower capacity as the battery chemically ages which may result in fewer hours of usage between charges. If it is out of warranty, Apple offers battery service for a charge. Learn more about charge cycles. As your battery health degrades, so can its ability to deliver peak performance.

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A lot of things can cause your battery to drain quickly. If you have your screen brightness turned up, for example, or if you’re out of range of Wi-Fi or cellular, your battery might drain quicker than normal. It might even die fast if your battery health has deteriorated over time.