Welcome to our March edition of DC
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This month we look at battery manufacturers
and battery installation.
There are quite a few battery manufacturers
in the world, some of whom
are probably familiar to you whilst others
are not. In this issue, we introduce
both well known manufacturers and the less
well known too.
Batteries must be installed properly
if you want to get the best
from them. Connect them inappropriately and
problems will occur. Article
2 looks at series and parallel
configurations as well as mounting
show you how to increase voltage or capacity by connecting the
together in a variety of
Please remember that we are always happy to
answer any questions you
regarding your DC supplies and battery installations. Just
line and we will do our best to help you.
always, we welcome any comments you may have and hope you enjoy
Editor: Alan Fidler.
Alan is the owner and manager of CBC
Design, a leading battery management company
based in the UK. He has worked in the
industry for over eighteen years and has designed
charging equipment and battery monitors for some of the world
ARTICLE: Battery Manufacturers. Author: Alan Fidler.
us are familiar with some of the worlds well known battery
Sanyo, Panasonic, Yuasa, Chloride etc but there are some other
known manufacturers, to the general public at least, who produce a
quality batteries too.
batteries manufacture sealed lead acid batteries in a wide variety
and ratings. The popular NP series is widely used in industrial
automotive applications. Long
life cells are also available for critical applications.
are well known for their outstanding powersafe range, an
with a long life which is the preferred battery in some
installations. They have an extensive
range for any application.
a German company with a proven track record. They
quality lithium thionyl chloride batteries since 1983
can produce custom
cells if required to suit most
was founded in 1927 by Carl Zoellner and have been
quality industrial batteries ever since. They have recently opened
companies in the USA and
are well known manufacturers of Nicad batteries in
from AAA to Super F. They also manufacture lithium ion and
Panasonic manufacture alkaline cells,
sealed lead acid batteries, lithium
cells, Nicad cells and Nickel Metal Hydride types too. They cater for
and industrial customers
all familiar with Duracell. They manufacture long life batteries
comparable manufacturers products in most applications.
excellent reputation worldwide.
ready are one of the oldest and most respected companies in their
energiser, a brand familiar to many of us has a
history that dates back
when W.H. Lawrence formed the National Carbon Company
ready continue to manufacture quality batteries throughout the
batteries are manufactured by Shenzhen Center Power Tech co
China. They have been developing lead acid batteries since 1985 and
leading manufacturer for the Vision range in China ever
Supply does not recommend one manufacturer above another. All of
have reputations of manufacturing high quality dependable batteries
type or another and you must
decide for your selves which best suits your
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ARTICLE: Battery Installation. Author: Alan
the advantages of batteries is that they can be installed in a
configurations to provide almost any voltage at any given current
increase capacity, batteries of equal ratings can be connected in
+ to +
and - to -. To increase the voltage, the cells can be connected in
+ of one
battery to - of the next battery in the chain. By using cells in a
configuration, both the voltage and the capacity can be
increase the voltage we can series connect as many cells as we
our required DC voltage level. If a the negative terminal of a 12V
connected to the positive terminal of a second 12V battery, the
the cells will be 24VDC with the positive connection on battery one
negative connection on battery 2.
capacity is increased by connecting the batteries in parallel. If
of one battery is connected to the positive terminal of a second
same connections are made using the negative terminals, we
the capacity of the configuration.
of you who are familiar with battery installations, these are both
concepts to understand however there are limitations that must be
batteries can be interconnected in either manner
Batteries connected in series or parallel
must have similar characteristics.
connect a 6V 100A battery in series with a 12V 100A battery of
type but not in parallel. You cannot connect a 6V and 12V
battery in parallel
can series connect two 6V 100A batteries and connect them in
100A battery of the same type.
never tap cells connected in series. This is bad practice and
imbalance in one or more of the batteries.
If you have two identical 12v batteries
connected in series to provide 24VDC, you
cannot use one battery as a 12V
and both as a 24V source. You must use a dropper to reduce
if you want to generate a separate 12 and 24V supply. In other
whole pack must be used as the power source rather than individual
parallel batteries in differing states of charge. Even though they
identical ratings, they have different
characteristics where they are in this
condition and connecting them together
could be very dangerous.
make sure the batteries are fixed into position using straps or
appropriate method where they are installed into vehicles or
objects. Many lead acid batteries use a liquid electrolyte that
paintwork and wiring if spilt. Fixing the
battery securely will prevent this.
Whichever configuration you decide to use,
make sure you contact the battery
manufacturer if you are in the slightest
doubt about your installation. Remember
batteries can be dangerous if used inappropriately so why chance
some numbers to help you calculate the number of cells your
given supply voltage:
acid batteries: 2.25V per cell. A 12V battery is 6 cells in
Batteries: 1.41V per cell.
acid batteries: 1.75V per cell (Leisure) 1.55V per cell
Batteries: Approx 0.8V per cell depending upon
Remember: Look after your batteries and
your batteries will look after you!
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Questions from Kevin
Can a sealed lead-acid battery be used upside
Sealed lead-acid batteries can
be used in any orientation
subject to particular conditions.
Contact your battery manufacturer
batteries of dissimilar ratings be connected in parallel or
Absolutely Not. You can only series
or parallel batteries of equal capacity.
circumstances must you attempt to combine batteries of
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