You can see it on the connection on the inside of the package.
positive and negative terminals and the battery case
Battery terminals or battery posts.
There are 2 battery terminals. A positive or hot and a negative or ground. The positive is slightly larger than the negative.
It is a battery.
The positive terminal of a battery is where electrons flow out, while the negative terminal is where electrons flow in.
Positive and Negative Terminals.
Best way would probably be to use a multimeter or voltmeter. Turn the meter on to volts DC and connect the probes to the battery terminals, if the voltage is shown as a negative, then switch the meter's probes around at the battery end so it shows the voltage as a positive reading on the meter. Mark the positive and negative terminals on the battery after this. Some car batteries have the negative terminal as the small post, but on some as the big post.
Most positive battery terminals are typically marked with the color red. This color coding helps to easily identify the positive terminal, distinguishing it from the negative terminal, which is usually black. Additionally, the positive terminal may have a plus sign (+) symbol, further indicating its polarity.
On any car, switching the battery hookups will most likely fry your battery.
Conventional current flow is from positive to negative. Electron flow is from negative to positive
On the battery is marked - or +. The red cable is positive and the black is negative.
Positive=+= red Negative=-=black.