“Battery Xtender” Alkaline
Battery Recharger with automatic operation
Many products claiming to recharge alkaline single-use batteries
have appeared on the market in the past, but have failed to live
up to their claims. Now we have a safe, proven, patented technology
that does what it claims to do. It restores the energy that was
originally housed in 1.5-volt alkaline batteries many times over
while restoring their terminal voltage to near-new conditions, as
long as the batteries were not completely drained in their previous
Even in cases where a battery has been used
to be point of near exhaustion, more useful life can be put back
into it, with some diminishment of number of times it can be further
recharged, and a slight decrease in terminal voltage.
The recharger handles all popular sizes
of 1.5-volt batteries, AAA, AA, C and D, and accepts four at a time
in any combination of sizes. Batteries of other chemistry systems
such as nickel-metal hydride, carbon-zinc, and nickel-cadmium may
also be intermixed with the batteries being charged, and the system
will respond accordingly. Insertion of batteries is simple and easy,
and may be done with one hand. Three LED indicators show the status,
whether charging, finished charging, or a bad result due to a defective
battery or incorrect polarity of insertion. There is no danger of
overcharging, batteries may be left in the charger indefinitely,
as currents are turned off when charging is complete.
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Technology Benefits Summary
Use of this technology will result in a
number of benefits to the consumer. There is a definite economic
benefit in terms of the expenditure for single-use batteries when
it is possible to reuse them instead of throwing them away. Purchasers
can look forward to having the cost of the recharger repaid within
one year through savings in battery use. Then there are the ecological
concerns about the billions of batteries that end up in U.S. and
Canadian landfills every year. Recharging helps to reduce this waste
and contamination. In Germany and other European countries, people
must take their used batteries to collection centers or be subject
convenience aspect is also appealing. A ready supply of recharged
batteries can be available at any time of the day or night. Developing
good housekeeping habits in this respect is a good idea. Have a
number of freshly recharged batteries on hand to replace the batteries
in an electronic device. This avoids waiting for the charge cycle
to be finished. The operation of the charger is easy for children,
so training them in good habits of battery management makes them
responsible for the care and maintenance of their own batteries
in their toys.
The charging process is continuously monitored
by a dedicated microprocessor, and each battery's voltage is individually
monitored and recorded. The monitoring program follows a comprehensive
set of logical instructions to ensure safety and efficiency. Years
of research and development have gone into the optimization of the
programs for safety and efficiency. The charger also contains redundant
circuitry to help ensure safety and reliability.
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The power, dependability, and shelf life
of alkaline batteries have been recognized for a number of years.
Their disadvantage has been the lack of a readily available means
to recharge them. The proven technology of the patented “Battery
Xtender” Alkaline Battery Charger has now made that disadvantage
all but disappear. Batteries in portable equipment are so much a
part of our lives that we now take them for granted. Where great
importance is placed on the reliability of battery power, the familiar
one-time use alkaline batteries have always been a standby. Examples
of use are in emergency flashlights, pagers for people who must
be continually accessible for quick response, and for portable cardiac
monitoring equipment in hospitals. When a commercially available
product such as the “Battery Xtender” Alkaline Battery
Charger is available at reasonable cost to replenish the stored
energy of these dependable batteries, there will be a growing public
awareness of the benefits of recharging alkaline batteries, as well
as other types. Institutions will make use of the technology to
reduce their battery consumption. Home use will grow as people find
they can depend on this charger for keeping their batteries in a
state of readiness.
Many families will find that one charger is not enough, and will
keep one at their summer cottage, one in the workshop, and one in
the office or other place of work. The rate of expansion of production
of alkaline batteries has been growing steadily over the last decade,
at a rate of six to eight percent per year. Part of this growth
may be due to restrictions placed on nickel-cadmium batteries, both
from the point of view of proper disposal and out of concern for
the health of workers exposed to dangerous cadmium contamination
in their manufacture.
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Differentiation and Uniqueness
The “Battery Xtender” Alkaline
Battery Recharger uses patented microprocessor control techniques
to continuously monitor and control the charging of up to four batteries
simultaneously. The same techniques can readily be extended to eight
batteries as well. There is no temperature rise in the batteries
being recharged, and careful control of the process ensures that
there is no buildup of gas or pressure. Fifteen years of testing
and improvement has gone into the development and as a result the
performance has been fine tuned to achieve manifold increases in
the number of times the original energy of the battery may be recycled
Other features of the battery charger
include automatic adjustment of the charging currents in proportion
to the size of the batteries being charged. These features have
been the subject of additional patent applications.
Details Long Description
The invention, Alkaline Battery Charging
Method and Battery Charger, is a method of recharging single-use
batteries, known as primary batteries, of the alkaline-manganese
dioxide-zinc type, commonly referred to as alkaline batteries, and
sold under such trade names as Eveready Energizer and Duracell Coppertop.
These are only two of a dozen or more brands of alkaline batteries.
A special technology is necessary to recharge these batteries successfully
and safely. This technology is represented in the patent and the
current state of product improvement that is part of the intellectual
property of the inventor of the Battery Xtender.
The charging process must not only be unconditionally
safe, but must be convenient to use and understand. The present
consumer product is intuitively easy to operate. Simply pull back
a light spring-loaded slide, insert the battery with its positive
terminal facing forward, and release the slide. When the slide contacts
the negative end of the battery, a yellow light will indicate that
charging has started, or a red light will signal that the battery
was accidentally reversed end-for-end, resulting in incorrect polarity.
Size-detection features will automatically determine the appropriate
charging current magnitude for the size of battery inserted. During
the time the battery is under charge, the yellow light remains lit.
The terminal voltage of the battery is continuously monitored during
this time. At frequent intervals throughout the charge cycle, a
supplementary current boost is given to the battery, an operation
referred to in the patent as the BTEST. Any voltage change at the
battery terminals in response to this test is detected and used
in the program logic to further control the charging, following
a set of logic rules permanently incorporated into the microprocessor.
The user is unaware that such operations are taking place, and only
perceives that eventually the green light will turn on, indicating
that charging is complete. At this point, the charging currents
are turned off, and the battery may be removed, or may be left in
place without danger of overcharging.
Although the microprocessor uses elapsed time
since when the battery was first inserted as one of its measured
variables, no Y2K or other date rollovers will affect the program
operation. If there is an interruption of power during the charging
cycle, the reapplication of power will cause a reset of the microprocessor,
and charging will begin anew. This may occur any number of times
without affecting the outcome of charging for batteries previously
charged and turned off, or batteries undergoing charge at the time
the power failed.
The charger receives its power through
a wall adapter running on a-c voltage, through a 2-m long cord with
detachable plug. The transformer adapter carries UL and CUL certification.
For other countries the appropriate a-c voltage and frequency ratings
are supplied, with acceptance according to C-E or other standards.
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