International Telecommunication Systems Operation [ ITSO ]

International Telecommunication Systems Operation [ITSO]


		What does it mean by capacity of a battery? What is a battery cycle? What is cycle life of a battery? What is the difference between the AGM and GEL Technology? How temperature can affect the battery life? What is end voltage? How does overcharging damage battery? What is self-discharge? What is a discharge rate and how is it measured? What does it mean by capacity of a battery? It is the number of Ampere-hours a battery can supply for a well defined current and end of discharge voltage. What is a battery cycle? A cycle of a battery is defined as a discharge plus a recharge. What is cycle life of a battery? Cycle life is the total number of cycles of discharging and charging completed by a battery. The no of cycles of a battery depends upon depth of discharge and recharge time. What is the difference between the AGM and GEL Technology? To immobilize the electrolyte in a gel cell, the electrolyte is mixed with fumed silica then the cell is filled while the mixture is still liquid and the liquid is allowed to settle down as gel. These cells may be used in any position and the batteries are exceptionally leak resistant. while in Absorbed Glass Mat technology the electrolyte is absorbed in sponge type glass separators. How temperature can affect the battery life? For each 10 0 c above the stander temperature i.e 25 0 C, the battery life is halved. At temperature below 25c, approximately 5% capacity is reduced on every 5c fall. What is end voltage? End voltage is the voltage of the cell or battery which is witnessed at the of the duty cycle. End voltage is usually based on the duration of the discharge and the minimum system voltage the equipment can tolerate. How does overcharging damage battery? Battery is overcharged when the total capacity removed has been replaced by recharging and the battery remains on charge. This overcharging creates excessive heat which cause the battery plate within the cells to buckle and shed their active material. What is self-discharge? It is the loss of capacity that results from leaving the cell to rest (i.e. without charge) for a given period of time. The rate of self discharge varies with temperature and specific gravity of the electrolyte. What is a discharge rate and how is it measured? A discharge rate is a measure of the rate at which electrical energy or power is being taken out of a battery to support the individual application’s needs. It is measured either in amperes of current or in watts of power.
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