Car Battery Care and Maintenance - Tips and Tricks - Bundys Garage
Car Battery Care and Maintenance | 12 Volt | Tips and Tricks
More info on Lead Acid Batteries and AGM maintenance:
https://goo.gl/jnkVry
The lead-acid battery was invented in 1859 by French physicist Gaston Planté and is the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, its ability to supply high surge currents means that the cells have a relatively large power-to-weight ratio. These features, along with their low cost, makes it attractive for use in motor vehicles to provide the high current required by automobile starter motors.
As they are inexpensive compared to newer technologies, lead-acid batteries are widely used even when surge current is not important and other designs could provide higher energy densities. Large-format lead-acid designs are widely used for storage in backup power supplies in cell phone towers, high-availability settings like hospitals, and stand-alone power systems. For these roles, modified versions of the standard cell may be used to improve storage times and reduce maintenance requirements. Gel-cells and absorbed glass-mat batteries are common in these roles, collectively known as VRLA (valve-regulated lead-acid) batteries.
Because the electrolyte takes part in the charge-discharge reaction, this battery has one major advantage over other chemistries. It is relatively simple to determine the state of charge by merely measuring the specific gravity of the electrolyte; the specific gravity falls as the battery discharges. Some battery designs include a simple hydrometer using colored floating balls of differing density. When used in diesel-electric submarines, the specific gravity was regularly measured and written on a blackboard in the control room to indicate how much longer the boat could remain submerged.
The battery's open-circuit voltage can also be used to gauge the state of charge.[12] If the connections to the individual cells are accessible, then the state of charge of each cell can be determined which can provide a guide as to the state of health of the battery as a whole, otherwise the overall battery voltage may be assessed.
Note that neither technique gives any indication of charge capacity, only charge level. Charge capacity of any rechargeable battery will decline with age and usage, meaning that it may no longer be fit for purpose even when nominally fully charged. Other tests, usually involving current drain, are used to determine the residual charge capacity of a battery.
In the absorbed glass mat design, or AGM for short, the spaces between the cells is replaced by a glass fibre mat soaked in electrolyte. There is only enough electrolyte in the mat to keep it wet, and if the battery is punctured the electrolyte will not flow out of the mats. Likewise, the mat greatly reduces evaporation, to the point that the batteries do not require periodic refilling of the water. This combination of features allows the battery to be completely sealed, which makes them useful in portable devices and similar roles.
Another advantage to the AGM design is that the electrolyte becomes the separator material, and mechanically strong. This allows the plate stack to be compressed together in the battery shell, slightly increasing energy density compared to liquid or gel versions. AGM batteries often show a characteristic "bulging" in their shells when built in common rectangular shapes.
Questions, Comments, Concerns:
bundysgarage@gmail.com
Twitter:
goo.gl/n4Yjw8
@bundysgarage
On The Web:
www.bundysgarage.com
Music by Randall Kent: As seen on NCIS
https://youtu.be/iYwsjia4GtI
All Rights Reserved 2016
© Copyright 2016
Bundys Garage
All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part with out the express written permission. Contact: bundysgarage@gmail.com
DISCLAIMER - DISCLAIMER - DISCLAIMER
Due to factors beyond the control of BundysGarage, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. BundysGarage assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. BundysGarage recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of BundysGarage, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the end user and not BundysGarage nor any of it’s subsidiaries.
Видео Car Battery Care and Maintenance - Tips and Tricks - Bundys Garage канала BundysGarage
More info on Lead Acid Batteries and AGM maintenance:
https://goo.gl/jnkVry
The lead-acid battery was invented in 1859 by French physicist Gaston Planté and is the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, its ability to supply high surge currents means that the cells have a relatively large power-to-weight ratio. These features, along with their low cost, makes it attractive for use in motor vehicles to provide the high current required by automobile starter motors.
As they are inexpensive compared to newer technologies, lead-acid batteries are widely used even when surge current is not important and other designs could provide higher energy densities. Large-format lead-acid designs are widely used for storage in backup power supplies in cell phone towers, high-availability settings like hospitals, and stand-alone power systems. For these roles, modified versions of the standard cell may be used to improve storage times and reduce maintenance requirements. Gel-cells and absorbed glass-mat batteries are common in these roles, collectively known as VRLA (valve-regulated lead-acid) batteries.
Because the electrolyte takes part in the charge-discharge reaction, this battery has one major advantage over other chemistries. It is relatively simple to determine the state of charge by merely measuring the specific gravity of the electrolyte; the specific gravity falls as the battery discharges. Some battery designs include a simple hydrometer using colored floating balls of differing density. When used in diesel-electric submarines, the specific gravity was regularly measured and written on a blackboard in the control room to indicate how much longer the boat could remain submerged.
The battery's open-circuit voltage can also be used to gauge the state of charge.[12] If the connections to the individual cells are accessible, then the state of charge of each cell can be determined which can provide a guide as to the state of health of the battery as a whole, otherwise the overall battery voltage may be assessed.
Note that neither technique gives any indication of charge capacity, only charge level. Charge capacity of any rechargeable battery will decline with age and usage, meaning that it may no longer be fit for purpose even when nominally fully charged. Other tests, usually involving current drain, are used to determine the residual charge capacity of a battery.
In the absorbed glass mat design, or AGM for short, the spaces between the cells is replaced by a glass fibre mat soaked in electrolyte. There is only enough electrolyte in the mat to keep it wet, and if the battery is punctured the electrolyte will not flow out of the mats. Likewise, the mat greatly reduces evaporation, to the point that the batteries do not require periodic refilling of the water. This combination of features allows the battery to be completely sealed, which makes them useful in portable devices and similar roles.
Another advantage to the AGM design is that the electrolyte becomes the separator material, and mechanically strong. This allows the plate stack to be compressed together in the battery shell, slightly increasing energy density compared to liquid or gel versions. AGM batteries often show a characteristic "bulging" in their shells when built in common rectangular shapes.
Questions, Comments, Concerns:
bundysgarage@gmail.com
Twitter:
goo.gl/n4Yjw8
@bundysgarage
On The Web:
www.bundysgarage.com
Music by Randall Kent: As seen on NCIS
https://youtu.be/iYwsjia4GtI
All Rights Reserved 2016
© Copyright 2016
Bundys Garage
All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part with out the express written permission. Contact: bundysgarage@gmail.com
DISCLAIMER - DISCLAIMER - DISCLAIMER
Due to factors beyond the control of BundysGarage, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. BundysGarage assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. BundysGarage recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of BundysGarage, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the end user and not BundysGarage nor any of it’s subsidiaries.
Видео Car Battery Care and Maintenance - Tips and Tricks - Bundys Garage канала BundysGarage
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