SUMMARY
The energy density of a fully charged 15.0 kg lead-acid battery is calculated to be approximately 9.6 MJ/kg. This is derived from the battery's ability to deliver 1450 W for 1 hour, which translates to a total energy output of 5.22 MJ (1450 W * 3600 s). In comparison, gasoline has a heat of combustion of about 44 MJ/kg, indicating that gasoline has a significantly higher energy density than lead-acid batteries.
PREREQUISITES
- Understanding of energy units (Joules, Megajoules)
- Basic knowledge of power calculations (Watts, Joules per second)
- Familiarity with lead-acid battery specifications
- Concept of heat of combustion in fuels
NEXT STEPS
- Research the energy density of different battery technologies, such as lithium-ion batteries.
- Learn about the efficiency of lead-acid batteries in various applications.
- Explore the environmental impact of lead-acid batteries compared to fossil fuels.
- Investigate advancements in battery technology aimed at increasing energy density.
USEFUL FOR
Students in physics or engineering, energy sector professionals, and anyone interested in comparing energy storage solutions with traditional fuels.