Yep, and modern cars are electricity hogs. Heated seats, power windows, power seats, high amp sound systems, etc. People don’t realize that most of the alternator output will be diverted to powering those things instead of charging the battery and the vehicle needs to run longer to charge the battery when they are being used. My wife is a perfect example of that.
15 minutes run time...seat heaters on, headlights on, stereo blasting and using the power lift gate and side doors after shutdown means the battery got nearly nothing to recharge with. Then let it sit for a few days with the IOD drain and repeat. The battery doesn’t stand a chance to maintain a charge.
