Hey scotty, i bought a 2016 honda city and left the dashboard light on overnight. Now the battery died and i got a portable car charger battery but whenever i hook in the positive and negative terminals accordingly the alarm goes off. I havent turned on the engine yet because im afraid it might damage the electronics. Is this normal or should I go find a mechanic.

that's normal with a low battery, just get it running and recharge or replace the battery

Thanks scotty. I appreciate the advice. Big fan btw