Technical insight for the everyday user

I would like to share my experience of how electric car users can also be surprised by electronic technical problems that are common to all drivers. I'm not talking about a burnt out light bulb, a frozen window wiper and similar things. I will talk about a crappy 12v battery. It happened on the coldest morning so far. After shopping in a supermarket, I got ready to go home, but to my surprise, when I turned on the car, the instrument panel did not turn on. Completely dark. Already opening the door when it should revive.. nothing. Everything else locked up. Lights, direction indicator, brake light - everything as usual. I got to the house without dashboard indications and the sound of clicks from the direction indicators. I didn't think that these clicks were so important to me, but it turned out that they are important! Okay. While driving, I noticed that the regenerative brake is unusually strong. You can drive almost without pressing the brake, but you have to be careful because the brake light does not light up. However, this braking can also be adjusted with the same power control pedal - "gas". At home, everything initially returned to normal. I put the car on the charger and when I took it off, everything worked as it should. I wrote "gluka" on the ice. Later in the evening, when I had to move again, however, again a surprise! But this time it can't even be allowed anymore. While looking for a solution, I found that the voltage of the 12v battery is barely 12,2V. I smoked it from the charger. All previous problems disappeared completely. I found that the on-board charging of the car is working. Well, I'll watch. In my categorization, this is still stupid (something is not fully explained), but I hope that the fault is in the 12v battery itself. Because you know, even if we're charged up, we might need to smoke to get going too! Good luck to everyone!