What happens if you connect two 9-volt batteries together?
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I’m assuming you’re talking about 9 volt “transistor” batteries with a pair of snap connectors on one end. The result depends on how you hook them up.
1. If you connect them in series, you’ll get 2X the voltage (18 volts) at the same current as a single battery.
2. If you connect them in parallel, you’ll get 9 volts at 2X the current of a single battery.
3. If you snap them together (creating a short-circuit), you’ll get two very hot batteries. And, if they happen to be high-current batteries, such as lithium-ion, you may even cause them to explode or catch fire.