Lead Acid Battery


  • Its high power-weight ratio is suited for delivering large surge currents for short periods of time
  • Is inexpensive to produce
  • Is ideal for engine starter and accessory applications


  • Its low energy densities make it impractical for powering devices for long periods of time
  • Lead acid batteries are heavy and not fuel efficient

The lead acid battery is the oldest type of rechargeable battery. In the initial chemical reaction, lead metal reacts with the sulphuric acid electrolyte to form lead sulfate and electrons. These electrons are manipulated to flow through a circuit, forming an electric current.

These batteries have a high power-weight ratio, making them desirable for applications that require large surge currents for short periods of time, such as engine starters and accessory applications. Because lead acid batteries are inexpensive to produce and generally very reliable, they are commonly used in today's modern automobiles.

Unfortunately, their limited ability to provide power across longer periods of time makes them unsuitable for battery electric vehicle applications. Additionally, their increased weight can be detrimental to fuel efficiency.