I've noticed that when charging my genuine LP-E17 battery with the genuine Canon LC-E17 charger, there is a point where the charger becomes very hot, then after an hour and a half or so the battery will continue to charge but the charger will just remain warm like any other charger, the charge completes in about 2 hours. I've only just got the M5 used and the original owner barely used it, the battery was manufactured in 2017. Is it normal for these chargers to get very hot or could I have a faulty battery or charger? Unfortunately I don't have any second batteries or chargers to test it so it would be good if anyone with this battery and charger could tell me if there's gets very hot.