Lead-acid batteries

Lead-acid batteries

The lead-acid battery is the oldest type of rechargeable battery. Its ability to supply high surge currents, along with its low cost, makes it attractive for use in motor vehicles to provide the high current required by automobile starter motors.

As they are inexpensive compared to newer technologies, lead-acid batteries are widely used even when surge current is not important. A lead acid battery consists of a negative electrode made of spongy or porous lead. The lead is porous to facilitate the formation and dissolution of lead. The positive electrode consists of lead oxide. Both electrodes are immersed in an electrolytic solution of an approximately 37% solution (by mass) of sulfuric acid in water.


Dilution of sulfuric acid

Commercial sulfuric acid is produced at a concentration of 98.5%. Its dilution from 98% to 37% is highly exothermic. The enthalpy of dilution must be absorbed. The diluted sulfuric acid has therefore to be cooled.


GAB Neumann’s process equipment

GAB Neumann’s graphite sulfuric acid dilution coolers perform the dilution and the cooling of the acid in one single piece of equipment. Dilution takes place inside of the graphite cooler. This unique design prevents premature wear and guaranties a long lifetime. GAB Neumann’s unique graphite annular groove sulfuric acid dilution cooler design ensures high turbulence, perfect mixing and highly efficient cooling of the diluted acid.


Associated products:

Impervious graphite annular groove sulfuric acid dilution cooler

GAB Neumann GmbH

Alemannenstrasse 29

79689 Maulburg


Tel: +49 (7622) 6751 0

Fax: +49 (7622) 6751 20


GAB Neumann GmbH | Alemannenstrasse 29 | D-79689 Maulburg | Phone +49 (7622) 6751 0 | Fax +49 (7622) 6751 20 | E-Mail info@gab-neumann.de | www.gab-neumann.com