The Short Answer
2. Unpacking the Nuances of Amperage Substitution
The most straightforward answer is that using a 1A charger instead of a 2A charger might work, but it won't be ideal. In some cases, the device will charge, but much, much slower. Imagine trying to fill a swimming pool with a teaspoon — technically, you'll eventually get there, but it's going to take forever. And you'll probably be very, very bored in the process.
Some devices are smarter than others. They might detect that they're not getting enough power and simply refuse to charge at all. This is actually a good thing, as it prevents potential problems with the power supply. Other devices might charge intermittently, constantly starting and stopping as they try to draw more power than is available. This can be annoying and potentially detrimental to the device's battery in the long run.
Then there's the issue of heat. When a 1A charger is forced to work harder to try and meet the 2A demand of the device, it generates more heat. This can shorten the lifespan of the charger and, in extreme cases, even cause it to fail. It's like running a marathon without training — you might finish, but you'll probably be in a lot of pain afterward, and you might even injure yourself.
So, before you plug that 1A charger into your 2A device, consider the risks. Is it worth potentially damaging your charger or waiting an eternity for your device to charge? In most cases, the answer is no. It's always better to use the correct charger for the device, or at least one that meets or exceeds the required amperage. Think of it as using the right tool for the job — it makes everything easier and safer.