General Question

elbanditoroso's avatar

Can you recharge a mostly dead 9 volt battery by plugging a fresh one into the terminals?

Asked by elbanditoroso (28294points) March 13th, 2016

Of course, I could just buy a new one. This more of a theoretical question than anything else.

Since the ends of 9-volt batteries fit into each other, can I recharge a dead battery by plugging it into a fresh one?

Observing members: 0 Composing members: 0

9 Answers

ARE_you_kidding_me's avatar

you’ll end up ruining both and possibly start a fire.

filmfann's avatar

Batteries work using chemical reactions, and regular batteries cannot be recharged in this way.
And yes, you can start a fire this way.

Strauss's avatar

DANGER! DANGER! Will Robinson!

cazzie's avatar

You can not recharge batteries that are not designed to be recharged.

ARE_you_kidding_me's avatar

You actually can recharge plain old alkaline batteries but you need a charger specifically designed to do so. Most people don’t realize this because it is a fairly recent development.

SecondHandStoke's avatar

But you can connect them in series for some healthy home made fun.

Don’t actually do this.

https://www.youtube.com/watch?v=8hwLHdBTQ7s

kritiper's avatar

Regular batteries cannot be recharged.

ARE_you_kidding_me's avatar

@kritiper they actually can, with a special charger and if they have not been discharged all the way down.

cazzie's avatar

I wouldn’t recharge regular alkaline batteries. The chemistry god gets very angry if something goes wrong.

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