R & J Batteries

Delkor batteries are renowned as being one of the best quality batteries available anywhere in the world. Their state of art production facilities are backed up by a ridged and through quality control process. This process has been recognised by ISO14001, ISO9001 and ISO/TS 16949.2002 certifications. Delkor have also been awarded the prestigious Korean Standard Quality Excellence Award. All Delkor batteries incorporate many patented and unique features and their comprehensive range includes automotive, commercial, deep cycle and recreation applications. View Applications

The Calcium/Calcium range uses a unique lead/calcium alloy to produce a heavy duty wrought plate able to with stand the most arduous conditions. The Silver/Calcium range has the added benefit of using a lead/calcium/silver alloy that adds increased performance and durability, particularly in extreme applications or high temperatures. The AGM range uses Absorbed Glass Mat separators which reduce internal resistance, increased performance, cyclic abilities and are able to accept higher re-charge rates. The AGM range are ideal for start/stop vehicles as well as for high end luxury vehicles that have a high electrical load.

Technology Of The Grid


Cast Grid

Cast Antimony (Dry/Conventional) & Cast Calcium (Hybrid MF)

  • Large Grain Size Poor Resistance to Deep Corrosion
  • Poor Resistance to “Buckling”
  • Loss of Physical & Electrical Integrity
  • Poor Resistance to Cycling
  • Poor High Temperature Performance

Wrought Grid

Delkor MF

  • Fine Grain Structure
  • High Resistance to Corrosion
  • High Resistance to “Buckling”
  • Retain Physical & Electrical Integrity
  • Eliminates Electro Chemical Effect of Arsenic-Antimony (Gassing, Water Loss, Self-Discharge)
  • Improved High Temperature Performance

Why Choose Delkor?

  • Delkor use a GM-patented gas/liquid separator and have the lowest self-discharge rate, making it the most convenient, maintenance-free battery for consumer usage.
  • Delkor MF batteries contain calcium, tin and lead, making them highly resistant to corrosion, and last up to 3 times longer than the competition.
  • Quality control management is carried out in 2-hour intervals at Delkor. An exhaustive, 11-step quality control process, including work monitoring, charge/discharge testing, material testing and product testing, is used to eliminate the production of defective batteries.
  • Selected by the Ministry of Commerce, Industry and Energy in 1984 as the manufacturer of high-tech products, Delkor also received the ISO 9001 for business management in 1995, the ISO 14001 for environment-related issues in 1996 and the QS 9000 for good quality in 1997. Delkor continues to make tireless efforts for research and development and for improving service.
  • Delkor continuously strives for the development of new products, including batteries for taxis, car stereos, RVs and telecommunications. Pursuing the production of multi-faceted products, Delkor, in conjunction with GM is speeding up the development process for batteries designed for electric cars, a core technology for these machines of the near future.

Benefits of Calcium Lead Grid

No Need To Replenish Distiled Water

The local action of conventional lead-antimony batteries, due to the effects of the antimony ions during battery use, electrolyzes battery fluid (electrolytes) into oxygen and hydrogen to deplete the battery of fluid. In such conventional batteries, users need to replenish the battery with distilled water or risk the deterioration of battery performance and life Delkor batteries, however, use a special alloy calcium-lead, which leads to extremely low levels of fluid loss. Hence,. as long as the charging system of the car remains error-free throughout the life of the battery, there is no need to supplement the battery with distilled water.


No Need To Recharge

The phenomenon of self-discharge causes lead-acid batteries to consume charged power, even when the battery is not in use (i.e. during storage). This is due to the impurities contained in the lead alloy, which induces local action and, thus, consumption of electrical energy. Delkor batteries, on the other hand, uses highly-refined, hand-selected lead alloys that render extremely low rates of self-discharge and maintains high battery performance even after long periods of disuse.


Prevent Risk Of Overcharge

Car batteries can be charged even when the car is in motion. In general, the charged current is adjusted to high or low levels by the voltage regulator. Given the preset voltage in the voltage regulator (14.5V), when a battery is nearly charged to full, the charged current must be reduced to prevent overcharging, which can diminish battery performance. As shown on the graph, the charged current of Delkor calcium batteries are reduced to an extremely low level when the battery is nearly charged to full, thereby minimizing (almost eliminating) the risk of overcharging.


Prevent Thermal Runaway

When using the nearly fully charged battery in high temperatures (approximately 70 degrees Celsius), the charged current must be decreased to prevent overcharging and subsequent battery damage. However, in lead-acid batteries, due to the contents of the grid alloy, the charging current decreases during the initial stage, but increases soon thereafter, leading to damages to the gird and deteriorated performance. However, Delkor batteries do not contain such substances and thus, the charged current remains at extremely low levels when the nearly fully charged battery is used in high temperatures to prevent overcharging.



At full charge, the electrolyte specific gravity is 1.280 while at 50% of charge, considered the minimum serviceable condition, the specific gravity is 1.220 In a typical situation where the specific gravity drops to 1.100, the battery is fully discharged.
Heat Sealed Covers
Exclusive Patented Liquid Gas Separator
Flame Arrestor
Low-Resistance Envelope Separators
Centred Cast-on Plates
Wrought Lead-Calcium Grids
Polypropylene Case