# Can a car battery be charged backwards?

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## What happens if you charge your car battery backwards?

A battery can explode when the cables are hooked up backwards. Anyone standing near the battery when it explodes could be seriously injured. Battery explosions can cause burns, permanent disfiguration and blindness.

## What will happen if you hook a battery charger up backwards?

The battery terminals and cables are typically labeled or color-coded, making it simple to match the connections. When the cables are connected backward, sparks fly, and the heat created may melt the cable insulation. Remove the cables immediately to prevent further damage.

## Can you charge a 12 volt battery backwards?

But Can a 12-volt Battery Reverse Its Polarity? Yes, it can happen. If the battery cells are out of balance, some cells will discharge before the others. As it continues to discharge, they will start to reverse polarity.

## What happens if you hook up a 12 volt battery backwards?

The protection circuit shuts down 12 volt power to the converter/charger if you connect the battery “backwards” and even after you reconnect it properly, those fuses, being blown, won’t allow any 12 volt power from the battery to the 12 volt distribution panel until after they are replaced….

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## Can hooking up battery cables the wrong way?

Connecting the battery terminals in reverse can cause serious damage to the battery itself, the electrical components, and even to yourself. Each terminal of a car battery uses 12V of current with positive and negative orientation.

## Does polarity matter when charging a battery?

Absolutely YES …the polarity does matter. Even though your cable ma not indicate any difference in the wires, your power supply should have an indication.

## When charging a car battery is it positive to positive?

Make sure the charger is off. Hook-up the positive cable on the charger to the positive terminal on the battery. Hook up the negative cable on the charger to the negative terminal on the battery. Set the charger to the slowest charge rate.

## Can current go backwards through a battery?

We learned Ohm’s law, which told us that electric current flows from a positive to a negative electric potential while the electrons move in the opposite direction. Kirchhoff’s law taught us that there must be continuity in current; i.e., current cannot “disappear” from a system.