Okay kiddo, do you know what a battery is? It's like a little box that stores electricity. When you put it in a toy or a phone, it makes things work. But did you know that batteries don't last forever? They can start to fade over time.
Battery fade happens when a battery starts to lose its ability to hold a charge. That means it won't last as long as it used to. It's kind of like a balloon that starts to lose air.
There are lots of things that can make batteries fade faster. If you drop your toy or your phone, it can damage the battery and make it run out of power faster. Also, if you leave your toy or your phone in a hot place, like in the sun or near a heater, it can make the battery fade too.
When a battery fades, it can be frustrating because the toy or the phone won't work as well as it used to. You might have to recharge it more often, or replace the battery altogether. But don't worry, sometimes you can make batteries last longer by taking good care of them and not using them too much.