I run a 2700 watt amplifier with LED projector lights and an obd2 bluetooth adapter on an extreme hybrid battery
have had my charging system checked repeatedly for alternator or battery issues and a year later everything is still fine(knock on wood)
they do have alot of counter measures for high drain devices a friend once charged a power cap in his house and used it to power a tv for several hours
high output alternators are a little more expensive require some tool time but come with good warranties and and pretty easily swapped if problems do arise
in price range
Power cap
Battery
High output alternator
best bet is to check your system regularly