Lead-Calcium Alloy Grid
Low self-discharge, low gas emission, long life.

 Exclusive Formed or unformed Plates
Full particle tank formation provides benefit of plate consistency, optimum cell voltage balance and enhanced plate performance. LCB uses in case formation to instead of tank formation to avoid any future pollution.

 Lead-Tin Alloy Strap and Electrode Pole
LCB unique Cast On Strap (COS) production is employed, with a computer program (CUP) controlling welding temperature and time to guarantee welding quality.

 Absorbent Glass Mat (AGM) Separator
The separators used in LCB batteries are made of non-woven fabric of fine glass fibers which have high resistance to acid and low electro-conductivity. The high porosity of the separators retains adequate electrolyte for the reaction of active materials in the plates.

 Immobilized Electrolyte, Diluted Sulfuric Acid (H2 S O4)
Analytically pure sulfuric acid made from specially prescribed acid water is employed in the production of the batteries along with the first-grade activated carbon and quadruple ion exchange resin to guarantee electrolyte quality.

 Terminal Structure
Highly conductive copper inserted terminals are employed in LCB 12 Volt models. Terminals are formed in a single cast on strap operation. This method greatly reduces the welding resistance of the terminals and increases their current carrying capacity.

The terminal type used is dependent upon the size and model of the battery. Please refer to the page of “Terminal Types” for details.

 Bunsen Rubber Safety Relief Valve
Providing accurate and safe valve pressure (1-3 PSI) during opening and closing.

 Epoxy Post Seals and Case to Cover Bond

 High Impact Resin ABS Container
Available in UL94-HB (Standard ABS) or UL94-V0 (Flame Retardant ABS) upon request.

Principle operation of valve regulated lead acid battery

The positive plate of lead acid battery is PbO2, and negative plate is Pb. The charge/discharge reaction of the Lead Acid battery can be expressed by the following reaction:

 PbO2►pb►2H2SO4 ‹–›PbO4 ►PbO4 ►2H2O
   Charge reaction     Discharge reaction

In the valve regulated battery it is obvious that water loss must be avoided. This is done by limiting the escape of hydrogen and oxygen from the battery. The design therefore accomplishes the recombination ofthe oxygen formed at the positive plate with the hydrogen formed at the negative plate. This virtually eliminates the production of free hydrogen at the negative plate to the action of recombination. However it is necessary to ensure that correct charging voltages are used. Valve Regulated Lead acid batteries are sometimes called recombinant cells because the construction provides a means of recombining the internally generated hydrogen and oxygen and the suppression of the evolution of hydrogen gas to limit the consumption of water from the electrolyte. Therefore the battery requires No addition of water during its normal life time. LCB valve regulated batteries are of the Absorbed Electrolyte type. The cells are designed so that a highly controlled amount of electrolyte is contained within a highly absorbent non-woven separator material that separates the battery plates. This type of separator construction allows the full wetting of the plates with the available electrolyte and also allows the passage of oxygen generated during charging, this method of construction is generally referred to as Absorbed Glass Mat (AGM) type of construction. Valve regulated batteries are sealed with the exception of a valve that opens when excess pressure builds up inside the battery. The valve automatically reseals itself. The recombination of charge gases is accomplished by allowing oxygen produced at the positive plate to pass through the separator material to the negative plate where the recombination reaction occurs. The valve controls the internal of the battery to optimize this efficiency of the recombination reaction and minimize the possible escape of electrolyte.