Hey guys, so i decided to make a powerbank with some stuff i have at home. Okay so to start i'm portuguese, english isn't my main language and i'm still in high school and i need to finish two more years to go to an university. Okay going to what matters, i decided to do a powerbank with a car charger that i found. Its basicly a transformator to reduce the voltage received from the car. I saw the specifications about the charger and im going to connect the charger with a battery or more. The voltage input of the charger is 12-24 volts and the output and is 5 volts. So what i was trying to guess was if i should connect the charger to one battery with voltage lower than the 12 volts asked by the charger or if i should connect more than one battery in serie to increase the voltage. As you can see im quite noob in this stuff. I dont know too if this powerbank is good or i will just create a fireball but im waiting for your thoughts! Thx Alex!
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