Does leaving a charger plugged in damage the charger?

No, this is safe as long as the battery is not in the charger. Some chargers may have a little power drain to be connected (even when it does not charge anything), but should not do any harm to the device to let it connect.

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RELATED QUESTIONS

Does leaving a car running charge the battery?
When you lower a car for 5-10 minutes you do not charge a battery.But keep in mind that the batteries of the car are typically acid lead batteries, and make it completely dead damage the battery. Only you can do this many times before the battery is no longer fully charged or does not hold a charge while you feel unused.
Is it bad to charge your phone with an extension cord?
Avoid charging the phone on the power line extension cable. As a precaution, it is always best not to charge the smartphone on these power line extension cables. This is because, if a device on one of the cable sockets is affected, it is also sure that it will cause the smartphone to deteriorate.
Is it bad to use a higher watt charger?
This means that you can surely use a charger with greater power (or amplifiers), as your laptop never draws the amount of energy needed at that time. A 30W or 45W charger cannot provide enough energy for your laptops, which means that you can damage your laptop and/or chargers.
Can a phone charger charge a laptop?
Portable and mobile chargers for power and charge are not the same. Therefore, it is not recommended to use the same charger. In case you use the phone charger to recharge your laptop, it will not only take a long time to recharge, but also the battery can die soon.
Is it OK to leave a lithium ion battery on the charger?
The quick answer is no, it is designed to be left in the charger. The battery will last longer if it always recharges very slowly, keeping it at cold temperature, and it is not fully charged or discharged. In fact, the degradation is probably worse when it is fully charged.
Can a power cord go bad?
It is not the plug that goes wrong in a power adapter, but the cord itself, or more precisely, the connections between the cord and the plug fail. This often also happens to the headphones, but these are often impossible to repair due to the type of wire used fortunately that are cheap to replace.

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Does leaving a charger plugged in damage the charger?

Let's Get It Fixed!

RELATED QUESTIONS

Does leaving a car running charge the battery?

Is it bad to charge your phone with an extension cord?

Is it bad to use a higher watt charger?

Can a phone charger charge a laptop?

Is it OK to leave a lithium ion battery on the charger?

Can a power cord go bad?