Leaving the charger behind phone it consumes very little electricity in the socket. Of course, it depends on the specific model, but if you left it in the socket for the whole year, you would only have to pay a few zlotys. And what about laptop chargers?
The myth of high consumption
A popular opinion from several years ago is that a charger without… laptop consumes up to 65% of normal power. That's not true – modern power supplies are equipped with systems that significantly reduce energy consumption in standby mode. In practice, this value is almost negligible.
How much electricity does a single charger use?
Contrary to popular belief, a charger left in the socket consumes surprisingly little energy. We are talking about values ​​below 0.1 W per hour – it's about the same as a phone charger in standby mode.
Differences between models
It is worth noting that energy consumption may vary slightly depending on the charger model and manufacturer. Newer power supplies are generally more energy efficient due to the use of newer technologies and better materials. But even older models do not generate significant costs.
When should you take out the charger?
While energy costs alone are not an argument for pulling out the charger, there are other reasons to do so:
- Security: During a storm, it is better to disconnect all devices from the power supply
- Power supply protection: frequent power surges can damage the charger over time
- Order: Unconnected chargers do not collect dust and do not get tangled under the desk
What about laptop batteries?
A much more important issue is taking care of the battery in the laptop itself. Keeping it at 100% all the time may shorten its lifespan. Manufacturers recommend that the charge level is usually between 20% and 80% for optimal cell condition. Of course, keeping the laptop within these limits all the time is difficult and tedious – but we will do a lot of good for the battery if we at least disconnect it as soon as we see a full charge.