Hail cannons are pseudoscience, they have been repeatedly studied and found to do absolutely nothing other than annoy your neighbours with explosions every few seconds. These people have been scammed
Sodium ion batteries are asymmetrical, pushing charge current hard can drive the anode negative enough to deposit metallic sodium causing formation of dendrites which destroys the battery
Hail cannons are pseudoscience, they have been repeatedly studied and found to do absolutely nothing other than annoy your neighbours with explosions every few seconds. These people have been scammed