Drone Battery Requirements

Google delivery drone by Wing

What is different about the operation of a drone and hence what does this mean in terms of battery requirements? For a drone we are meaning an unmanned drone as used for photography or surveillance. The fundamental parameters are: This post has been built based on the support and sponsorship from: Eatron Technologies, About:Energy, AVANT Future Mobility, Quarto Technical … Read more

12V System Voltage Limits

12v battery system limits

The 12V system voltage limits are quite well defined by the automotive industry as there is a need for all of the components to survive. Based on this LV 124 sets out Vmin and Vmax limits for different classes of function. Vmin Vmax Description 6V 16V For functions that must retain their performance during the … Read more

Peak vs Continuous Power

Rolls-Royce Spirit of Innovation

Peak vs continuous power is a recurring question across the electrification space. We need to deliver a repeatable amount of power for the user to have confidence in the machine and we need high power numbers to deliver the brochure wow factor. The transient peak power works well for a number of vehicle applications. However, … Read more

Electrified Aircraft Propulsion Targets

NASA electrified aircraft

A look at the electrified aircraft propulsion targets. NASA state in their November 2021 presentation that they have the following requirements for the battery pack: The targets at pack level are rather tough: The gravimetric energy density plotted versus total pack energy shows that the automotive packs are currently plateauing around 180Wh/kg. The roadmap to … Read more

Cell to Pack Mass Ratio

cell to pack mass ratio

The cell to pack mass ratio is a simple metric to calculate and gives you an idea as to the efficiency of your pack design. This is simply the total mass of the cells divided by the mass of the complete battery pack expressed as a percentage. The larger the percentage the better: An interesting … Read more