Energy storage technologies absorb and store energy, and release it on demand. This includes gravitational potential energy (pumped hydroelectric), chemical energy (batteries), kinetic energy (flywheels or com- pressed air), and energy in the form of electrical (capacitors) and.
You need to know the distance (total watt-hours) and your vehicle's fuel capacity (power supply capacity). Here's the formula: Total Watt-Hours = Device Wattage × Hours of Use For a 3-day trip, you'd need a power supply with at least 6,240Wh. But wait—most portable stations.