Separator is an envelope shaped material which is generally made of plastic material. Its function is to prevent contact of negative and positive plates with each other. Separator transfers electrons by reacting with electrolyte plates. Acid density of a fully charged battery is around 1.28 g/cm3, it is a plastic material where box cover, plate set and electrolyte is placed. Plug is an element which helps to take hydrogen gas – formed in the cell during battery charge – out. Indicator –is not available in every model – is a part which gives information about fullness level of battery. If indicator is green, it is understood that battery is full. But as it gives information only about one cell, in case of any failure after sales, sometimes the indicator position can be disregarded. Battery components become ready to delivery to customer after being assembled and charged in the production. Batteries are self-charging products due to their nature. Because sulfate ions in electrolyte reacts with plates and start the reaction –that we call sulfation – on plates.
When we ask when battery begins to discharge and the answer is as follows: Battery begins to be discharged by itself after production is completed i.e. charge process is completed. Due to self-discharge characteristics of battery, especially before sales storage become very important. Batteries should always be kept in a cool, dry environment before their sale. They must be protected from direct sunlight, rain, snow etc. and similar conditions. Ambient temperature must be maximum 25 degrees. The test results show that; when ambient temperature is increased by 10 degrees, shelf life of battery is reduced by half. Although it varies depending on the technology, shelf-life of a battery –kept below 25 Degrees - is 6 to 8 months.
Battery Shelf-Life Declaration and Table
6/8 months 3/4 months 1,5/2 months
10-25C0 25-35 C0 35-45 C0
Sales points should give importance to this characteristics of batteries, therefore they should apply “fifo: first in – first out” principle.
Batteries are energy storage devices which are generally consisted of plates, separators and sulfuric acid. The first component, grid can be defined as a skeleton whose main alloy is lead but contains different alloys depending on the technology. The active substance or paste is a combination of various chemicals which provide necessary reaction for the energy of battery and it is plastered to grid.