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On 26 March 1860 - the French physicist Gaston Planté presented a set of nine
electrochemical cells to the French Academy of Sciences. Each of the cells was
constructed by loosely rolling a sheet of flannel between two thin lead sheets,
and then immersing the cylindrical assembly in dilute sulphuric acid held within
a glass jar. Planté demonstrated that he had produced a battery 'of great
power'; moreover, his ‘lead–acid system’ could be recharged electrically and
thereby proved to be the world's first practical secondary battery.
With the advent of electricity generating facilities, Planté’s invention became
a universal means of storing electrical energy in a wide variety of
applications. Indeed, the entire civilised world as we know it today is totally
reliant on this electrochemical technology. For instance, we still have no
cost-effective alternatives for internal-combustion-engined (conventional) cars,
wheelchairs, scooters, golf carts, and emergency power supply systems.
The modern lead–acid battery is a far cry from Planté’s original experimental
design, although the basic chemistry is unchanged. It is likely that this
battery will play an important role in powering increasing numbers of urban
electric cars and possibly also hybrid electric cars, as well as in storing
renewable energy ― important pathways to securing a sustainable future for
mankind. - Dr David Wilson,
Director – International Lead Association
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- Can I use a replacement
manufactured by another company?
- Can a sealed lead acid
battery be inserted on its' side?
- Do I need to drain my SLA
battery to prevent memory effect?
- Do I need to add water to my
battery?
- What might have caused my
battery to fail?
- What determines the life of
an SLA battery?
- Can my battery be shipped by
air?
- I hear lots of talk about
float and cycle applications. What's the difference?
- What is the difference
between a gel cell, an AGM and an SLA battery?
- What is a marine or deep
cycle battery?
- What is the shelf life of
an SLA battery?
- I understand that batteries
can be put together in series or parallel. What does this mean?
Don't see your
questions? call 800-255-5545 or
email
- My battery was manufactured by
China Battery Company. You don't carry this brand.
Can I use a replacement manufactured by another
company?
Yes, you may use a substitute as long as the voltage
and dimensions are the same. The capacity rating
(shown in "ah") may be slightly higher or lower than
the original. This is fine and should not affect the
unit. There are hundreds of battery manufacturers
and many batteries are interchangeable. If you are
in doubt, contact our staff.
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- My application calls for the
battery to be inserted on its' side. Can this be
done with sealed lead acid batteries?
Yes. The batteries can be installed in any
orientation.
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- Do I need to drain my SLA
battery to prevent memory effect?
No. Sealed lead acid batteries do not suffer from
memory effect. Draining the battery may result in
damage.
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- Do I need to add water to my
battery?
No. Sealed lead acid batteries do not require the
use of water.
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- What might have caused my
battery to fail?
It may have been under-charged or over-charged.
Check your charging device periodically to ensure it
is working properly. Also, make certain you are
using the right chemistry for your application.
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- What determines the life of an
SLA battery?
Sealed lead acid battery life is determined by many
factors. These include temperature, depth and rate
of discharge, and the number of charges and
discharges(called cycles).
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- Can my battery be shipped by
air?
Yes. Most sealed lead acid batteries are declared
non-hazardous for air shipping. Some exceptions
apply.
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- I hear lots of talk about float
and cycle applications. What is the difference?
A float application requires the battery to be on
constant charge with an occasional discharge. Cycle
applications charge and discharge the battery on a
regular basis.
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- What is the difference between a
gel cell, an AGM and an SLA battery?
A gel cell or gelled electrolyte is a sealed battery
containing semi-solid electrolyte and may also be
identified as a sealed lead acid, AGM(absorbed glass
mat) or VRLA type battery. AGM batteries are
sometimes referred to as starved electrolyte because
the fiberglass mat contained within the cell is
saturated only 95% with acid and there is no excess
liquid. Nearly all AGM batteries are VRLA or valve
regulated. VRLA batteries are designed with a valve
that allows the battery to keep a slight positive
pressure.
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- What is a marine or deep cycle
battery?
These are actually different types of batteries. The
common marine battery is often rated to marine
cranking amps. It is designed to offer a quick shot
of amperes in a very short time span. These
batteries can provide thousands of starts but can
usually only withstand 50 or so cycles. A deep cycle
battery is designed with the capability of being
discharged and charged hundreds of times. Many of
these batteries may be totally discharged or drained
before they are ever recharged.
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- What is the shelf life of an
SLA battery?
All sealed lead acid batteries self-discharge. If
the capacity loss due to self-discharge is not
compensated for by recharging, the battery capacity
may become unrecoverable. Temperature also plays a
role in determining the shelf life of a battery.
Batteries are best stored at 70 degrees F. When
batteries are stored in areas where the ambient
temperature varies, self-discharge can be greatly
increased. Check the batteries every three months or
so and charge if necessary.
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- I understand that batteries can
be put together in series or parallel. What does
this mean?
Connecting your batteries in series will generate a
higher voltage. The total voltage is the sum of all
individual voltages. Connecting the batteries in
parallel will increase the capacity or amp hours.
When you connect your batteries in a "string"
(either in parallel or series) and find a battery
that is not charging properly, we suggest that the
entire string be replaced.
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Battery Glossary
- Battery: Two or more cells connected
together.
- Cell: An electrochemical system that
converts chemical energy into electrical energy.
- Primary cell: An electrochemical device
that is discharged only once and then discarded.
Alkaline batteries are an example.
- Secondary cell: An electrochemical device
that may be discharged and recharged a number of
times. NiCad batteries are an example.
- Battery Capacity: The ampere-hours
available from battery.
- Battery Float Voltage: A constant voltage
applied to a battery to maintain the battery
capacity.
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