Based on these results, current draw and temperature differences have an influence over the effective battery energy capacity of common AAA batteries. Larger discharge currents consistently led to a lower measurable, starting voltage and faster overall drain. The batteries also showed a difference in the overall total energy output.
This can be linked to the relationship between this feature and capacity. The time integral of discharge voltage is proportional to the energy delivered by the battery, since the current is kept constant over the discharge process.
Is more correct to say that internal resistance is related to battery discharge current. Indeed, a battery with higher discharge current will have a smaller internal resistance. For example, a LiPo prismatic cell of 3000mAh used to have a bigger discharge current than a cylindrical LiIon with the same capacity.
This would mean that discharge current would not only affect energy capacity but could also potentially lead to issues relating with heat (combustion). The increased battery temperatures results in higher internal resistances which means less efficiency.
Indeed, a battery with higher discharge current will have a smaller internal resistance. For example, a LiPo prismatic cell of 3000mAh used to have a bigger discharge current than a cylindrical LiIon with the same capacity. I think you should go with higher voltage and low current if you want to achieve low heat dissipation.
Operating outside of these optimal specifications could demonstrate a noticeable effect on battery life expectancy, and more specifically, lower the effective energy capacity. This project’s approach to measure these effects consisted of collecting information on battery voltages under specific temperatures and discharge currents.