Clio A Built ́95 – Battery indicator sometimes lights up…

Hello you! Since last weekend I noticed with my little Clio that the battery indicator lights up every now and then, but goes out again after a short time. The car starts perfectly, has no misfires and also I can not complain! Now the question arises to me – what is it?? Is it possible to charge the battery just once? In other forums I have read that maybe the lighting system is defective, but the Clio drivers in which the Fa ll was, just had the problem, that the car didn’t or only sprung after several misfires. So I hope that you can calm me down by telling me that it might be really enough to just recharge the battery again. 😉 By the way, I only bought the car for 5 months with a one-year used car warranty. I called the dealer earlier and told him the problem. He said, if it really is the alternator, then Is that right??? Where else have I read that the alternator is in the guarantee if problems arise in the first 6 months after the contract is concluded…. A lot of questions, I know, but I still hope that one of you can help me quickly! 🙂 Thank you very much in advance! 🙂 LG woolfivieh PS: Add a picture of my Clio – he was still standing at the dealer au f the farm! 😉