Page 208 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

Battery manufacturers worldwide continue to tap into the AGM technology potential to manufacture high-
performance AGM batteries.
For example, Yuasa AGM batteries are recognized globally in the power sports battery market. In 1983, Yuasa
launched the first motorcycle maintenance-free AGM batteries with the YT series.
The Crown Battery line includes a broad range of industrial deep cycle batteries and SLI (starting, lighting, and
ignition) batteries for varied applications, such as automobiles and light trucks, electric forklifts, pallet trucks, farm
equipment, floor care equipment, marine and recreational vehicles, etc.
Uses of VRAL Batteries
VRLA batteries (valve-regulated lead-acid batteries) are commonly used as backup power sources for
uninterruptible power supply (UPS) systems, emergency lighting, and alarm systems. They are also used in large
portable electrical devices and off-grid power systems. VRLA batteries are maintenance-free and sealed, so they
don’t require regular electrolyte (water) level topping up. However, they still need to be cleaned and regularly
tested.

Here are some other uses for VRLA batteries:
• Telecommunications: VRLA batteries are well-known for their maintenance-free operation and wide use in
telecommunications.

• Mounting: GEL and AGM types of VRLA batteries can be mounted in any orientation.
• Transportation: VRLA batteries can be safely transported by air or ground without special handling.
• Ventilation: VRLA batteries are safe for use in areas with limited ventilation.
Limitations of AGM Batteries
• Cost: AGM batteries are more expensive than flooded lead-acid batteries.
• Weight: AGM batteries are heavier than flooded lead-acid batteries of the same size.

• Energy: AGM batteries have a high-power output but low specific energy.
• Capacity: AGM batteries gradually lose their charging capacity over time.
• Sensitivity: AGM batteries are sensitive to overcharging, high voltages, and high temperatures.
• Discharge rate: AGM batteries have a relatively low discharge rate, so they can’t provide as much power at
once as other batteries.
• Lifespan: AGM batteries typically last 3–5 years, which is shorter than some other types of batteries.
• Deep discharge: AGM batteries have a limited deep discharge capability, so they aren’t well-suited for
applications that require a high depth of discharge.
• Charging: AGM batteries require full charging between uses and need a charger that monitors volts, amps,
and ambient temperatures.

Limitations of VRAL Batteries
• Capacity: In comparison to newer battery technologies, lead-acid batteries have a restricted capacity, resulting
in a lower energy storage capability. Consequently, a greater quantity of batteries will be necessary to store an
equivalent amount of energy, leading to potential cost implications.
• Efficiency: Lead-acid batteries are not as efficient as some of the new battery technologies. They make use
of only about 80% of their stored energy, meaning that you will need to store more energy to make up for this
loss.
• Weight: Lead-acid batteries are relatively heavy, which can make them difficult to transport, especially in rural
or remote areas. This additional battery requirement can contribute to increased costs associated with solar
power systems.
Maintenance: While lead-acid batteries are relatively easy to maintain, they do require regular maintenance
to ensure that they are working correctly. When lead-acid batteries reach the end of their lifespan, appropriate
disposal methods must be followed.

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CITS : Automotive - Mechanic Diesel - Lesson 57 - 61