to Valve Regulated Lead (VRLA) batteries are commonly known as sealed lead-acid batteries, and are based on lead-acid rechargeable batteries that require little or no maintenance. A common feature of this type of battery is as the name implies, are always constructed to be a sealed battery with a built in safety valve. If the sealed lead acid battery should ever reversed or any other standing position, the battery is unable to leak and can not escape its electrolyte (battery acid). Furthermore, when the typical lead-acid battery according is recharged at a slight high voltage, it emits gases that may be considered dangerous if emitted in large quantities. Since the VRLA battery is sealed, when the battery is put in office is based on its built in release valve to relieve the pressure of the gases that form inside the battery. The release valve emits small traces of these gases and allowed each type of VRLA battery to be placed in small units (such as the battery backup systems) inside buildings or offices without worry of harmful gases that are emitted . These batteries are further divided into two subgroups know as absorbent glass mat batteries (AGM) and the gel battery.
The AGM battery differs from other lead-acid batteries because it uses a glass fiber separator to hold its place in electrolytes. These mats allow the AGM to accumulate the highest frequency of free acid and never spilling a drop. E 'was developed in 1980 by the Concorde Aircraft Battery, their intention was to create a warm climate, resistant to chemical alternative vibrations for the expensive batteries currently used in their hunt air-craft technology. Today the AGM is applied in motion as well as many automobiles. They are often used in remote sensors and cold environments because of their lack of free electrolyte will never corrode or crack
Pro battery AGM :.
- They have a low internal resistance allows then be charged and discharged rapidly
- They are maintenance
- does not corrode the surrounding environment because the acid is trapped in the mat
- Managing vibrations very well
Against AGM battery:
- A little 'expensive to be almost double the price of a flooded cell battery
- not accept the overhead while burning the electrolyte, which is irreplaceable in the AGM model
Finally, the gel battery, sometimes called the gel cell, is unique for its untilization of gelled electrolyte. The gel is created by sulfuric acid mixed with silica fume, making it a mass of immobile gel. The gel cells are almost widely used in power wheelchairs because of their large capacity and low cycle in acid secretion. Both types of VRLA batteries are widely used in aerobatic aircraft because of their talent to withstand various flight altitudes and their wide ambient temperature range.
0 Komentar