Charging Battery with Alternator - Warning

now was that because you ran a pretty good kicker behind that CB ----c'mon...tell the truth... lol. (yes I still have my call sign and skipshootin' pirate radio license!)
I had my ham license back in the 70's but had CB friends too. They used to call the amp a "footwarmer"! I had a small 2M rig in my car but never enjoyed it like I did my full system at home! Preferred CW anyway...