The other day i changed the batteries in the smoke detectors for my elderly mom. If you connect them in parallel youll get 9 volts at 2x the current of a single battery.
Arduino 9v To 5v Or Better Yet Some Other Way Of Dealing With
What happens if you connect 2 9v batteries. If you connect the negative terminals together and the positive terminals together then nothing happens other than creating a 9 volt battery capable of providing twice the current measured in. You know how 9 volt batteries plug together pos to neg. A minute later i almost burned my hands on them. So after you snap the two batteries together the circuit can be modeled as an 18 vdc voltage source connected to a resistor that has a resistance of 2r. If you snap them together creating a short circuit youll get two very hot batteries. Barely anything happens when i connect two 9v batteries together.
How to connect two batteries in series connection and giveaway link in description duration. This video features evapogoration by billy bao available under a creative commons attribution 30 united states license. And if they happen to be high current batteries such as lithium ion you may even cause them to explode or catch fire. Apparently connecting the pos to the neg caused them to grt hot. V a and v b can then be added together to form an 18 vdc voltage and r a and r b can be added together. Jacobs ladder with 9v batteries duration.
If you connect them in serie you have 18 volt. When you snap two 9v batteries together all four of the above circuit elements will be in series. While talking to her i was fiddling the old batteries and plugged 2 of them together. In parallel then you still have 9 volt but you can have more coulombs out of it the amperage is limited by the internal battery resistance.
Gallery of What Happens If You Connect 2 9v Batteries
