Apparently connecting the pos to the neg caused them to grt hot. And if they happen to be high current batteries such as lithium ion you may even cause them to explode or catch fire.
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What happens if you connect 2 9v batteries. If you connect them in serie you have 18 volt. If you connect them in parallel youll get 9 volts at 2x the current of a single battery. Barely anything happens when i connect two 9v batteries together. This video features evapogoration by billy bao available under a creative commons attribution 30 united states license. 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. You know how 9 volt batteries plug together pos to neg.
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. A minute later i almost burned my hands on them. Jacobs ladder with 9v batteries duration. How to connect two batteries in series connection and giveaway link in description duration. When you snap two 9v batteries together all four of the above circuit elements will be in series. 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.
The other day i changed the batteries in the smoke detectors for my elderly mom. 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. While talking to her i was fiddling the old batteries and plugged 2 of them together.
Gallery of What Happens If You Connect 2 9v Batteries
