What happens to the temperature of an electrical battery when the battery is discharging? Why?

Answer 1

In order to discharge a battery it has to be subjected to a load. The size of the load will determine how fast the battery discharges. When selecting the load, it has to be taken into account how long the experiment can be left running.

In some battery applications and regulation of charginging & discharging a Temperature Cutoff (TCO), A protective or safety device (e.g., thermostat, PTC, etc.), which senses temperature (e.g., in a battery) and opens or cuts off the electrical circuit if the specified temperature is exceeded, thus preventing a further rise in temperature due to the charge or discharge of a battery.

Charging -- The process of supplying electrical energy for conversion to stored chemical energy.

Discharge -- The conversion of the chemical energy of the battery into electric energy.

Charging & Discharging create heat during the conversion of energy. How much heat depends upon various factors of battery design and load sizes.

I hope this helps.

Answer 2

It raises becasue the rate of chemical reaction increases.