eight-cell Ni-Cd
pack at 15 amps.
That will provide
a much more
realistic
evaluation of the
battery than
could be
obtained with a
500 mA or 1-
amp load.
As you can
see in the photos,
the CBA is a
small cubeshaped
device,
measuring 31⁄2 x
3 x 3 inches. It
contains an integral
cooling fan. You
also receive a cable
that is approximately
6 feet in length, which terminates in a
common USB connector. All power to
the CBA is provided by this cable; no
extra power supply or battery is needed.
That USB connector must be plugged
into a personal computer (PC) with an
operating system of at least Windows
98SE, Me, NT, 2000, or XP.
Unfortunately Macintosh-computer
owners cannot be accommodated at this
time.
A CD is provided that contains the
West Mountain Radio proprietary
software, which must be installed in your
computer. That proved to be an easy
process. All of the operating instructions
are included on the CD.
Keep in mind that the CBA has no
integral meter or LCD screen. All of the
input data and resulting test data must be
viewed on the PC monitor. As part of
this system, test-data graphs are
generated. They can be viewed, they can
be printed using your PC printer, and
they can be saved in a CBA data file on
your PC. You can also print convenient
labels to stick directly on your batteries
to help you remember the last time they
were tested and how they did.
The CBA is also available with an
optional temperature probe that
magnetically connects a thermistor
device in close proximity to your battery
pack. This temperature sensor can warn
you if your battery is overheating during
test discharging. It can also let you know
THIRTY YEARS ago the first Ni-Cd
battery tester hit the hobby market. It was
called the Flite-Life, and it dischargetested
four-cell receiver packs or eightcell
transmitter battery packs at a fixed
load of 300 mA. You had to attach a
household electric clock to this device to
determine the time on discharge. From
that time and the load, you calculated the
capacity in mAh.
Since that humble beginning, dozens
of battery-testing devices have come and
gone. Now most provide the timing and
load integration, such that you read the
capacity directly in mAh! Many allow
you to test a single cell up to 20-, 30-,
and 36-cell packs.
However, the one thing that has been
missing is a load-current value that has
more meaning to the electric-power
enthusiasts. The 300-500 mA load was
fine for RC-system battery packs, but to
test a battery that normally supplies 10,
15, or 20 amps to a motor, at just 500
mA, proves to be of little value. The low
load current will make the battery appear
okay. Then you get out to fly, and the
same battery is dead in a minute or two
of flight time.
Our hobby industry has needed a
battery load-testing device
that can apply realistic load currents to
more closely simulate what motors
consume in flight. Keep in mind that you
don’t want to run your motor for long
periods of time on the ground or in your
shop. Without natural airflow, you can
easily burn out a motor.
To cope with this load problem, West
Mountain Radio has entered our hobby
industry and has a new product called the
Computerized Battery Analyzer (CBA). I
realize that several high-load-current
testers are available. The CBA’s
introductory street price is $89.95, which
makes it attractive.
The CBA can test under load almost
every type of battery, such as Ni-Cd,
NiMH, Li-Ion, Li-Poly, alkaline, carbon
zinc, mercury, and lead acid. Ni-Cd and
NiMH batteries can be tested from one to
38 cells, and Li-Poly batteries can be
tested up to 10 cells. Load limitation is
40 amps, or 150 watts, maximum and up
to 48.0 volts.
Those numbers might seem limiting,
but keep in mind that you can still test an
Te c h n i c a l R e v i e w Bob Aberle
E-mail: [email protected]
West Mountain Radio Computerized Battery Analyzer
Short pair of output leads at right use APP
connectors. Attach battery under test to
this cable. Exiting other side is cable that
goes to PC.
CD contains the proprietary West
Mountain Radio CBA software. It is easy
to load this program into your PC.
Attached to CBA (top left) is 6-foot cable allowing it to connect to
PC. At right is CD you receive with proprietary software program.
At lower center is thermocouple-type heat sensor for checking
battery temperature.
Photos by the author
Thermocouple and cable that allows you to monitor battery
temperature during testing. It plugs into connector located adjacent
to output cable.
CBA is connected to PC and battery under test. CBA depends on
PC to display its data, but you can run other applications on your
PC during battery testing.
USB connector plugs into PC as shown. Upper one is the CBA.
Lower one is for Bob’s digital camera card reader.
CBA is testing two-cell Kokam Li-Poly battery. Temperaturesensor
cable is connected and thermocouple is placed on top
of battery pack.
your battery’s temperature for information purposes. The
software will terminate a test if a battery-temperature limit is
reached before the voltage limit is reached during a high-power
test.
Running a battery load discharge test is simple. Open the
West Mountain Radio software program. After reading it into
your PC from the disc, an icon identifying the program will
appear on your desktop. When you click on that icon, the CBA
data sheet will appear on your monitor.
Plug the cable with the USB connector into a spare USB
port on your PC. Then plug the battery to be tested into the
output cable, which has Anderson Power Pole (APP)
connectors. You will need adapters if your battery doesn’t also
have APP mating connectors.
Now the important part! You must identify the particular
battery pack under “Test Name.” You might want to label it
“Sanyo CP 1700 SCR” or “FMA/Kokam 15C.” Most of the
other data will appear on the graph printout, so there is no need
to have it under Test Name.
Then you choose “Battery Type” from at least eight different
kinds. “Capacity (Ah)” is next! It will allow you to select to
within 100 mAh. So if your battery is rated at 830 mAh (which
is the same as 0.830 Ah), you would set it at 0.800 Ah.
“Voltage” and “Cells” may show up automatically. If not,
set the exact number of cells in your battery. After doing that,
the nominal voltage for that type of battery should be displayed.
“Test Amps” is the load you want to apply. The CBA software
will recommend a test load, but you can change it to a different
value within the device’s limits.
If you choose a high value, a cautionary note may appear on
the PC screen. After being advised, you can either accept the
value or lower your selection. Be aware that the lowest load
setting on the CBA is 0.500 amp (500 mA).
The last item to verify is “Test Cutoff V.” This is the voltage
to which the CBA will take your battery before terminating the
test. For safety reasons this is established by default in the CBA
software. Ni-Cd and NiMH cells are tested down to 0.9 volt per
cell, and Li-Poly cells are tested to 2.8 volts per cell. I agree
with these levels, so I have no problem with that.
After you have made these entries, click on “Start” and the
CBA does the rest. When the test has concluded, you will see a
message on your PC screen. You can print the graph just
created using your regular PC print commands. You can also
save the graph to the CBA folder on your desktop. I was even
Print-screen image was taken much like a photograph during battery test.
Typical print of graph that results at conclusion of each battery test. This was test of
two-cell Apogee 830 mAh Li-Poly battery pack at a 6.0-amp load. Capacity was
recorded at 750 mAh—excellent for 7.2C load.
able to print-screen a graph at a particular
point during a test.
How accurate is the CBA? I inserted a
new AstroFlight Super Whattmeter
between the CBA and the battery pack. I
keep comparison records using several
different battery packs. For the most part,
the Astro meter and the CBA were within
1% of one another. I realize this isn’t an
absolute test, but it gave me a good
feeling that the CBA was doing a reliable
job.
Most important was the fact that
discharge-test results produced the same
capacity readings time after time. I even
noted that after taking 760 mAh out of a
pack, it required something like 760-780
mAh to fully recharge it. The numbers
definitely work!
Repeatability is the most important
item when using any type of battery
tester. It is more important than the
absolute value. For instance, you might
have used a certain tester for many years.
In recent months a particular battery pack
may have tested at 1200 mAh. Then you
switch to the CBA and obtain a capacity
reading of 1250 mAh. You might want to
complain, but I would accept that test
value if it repeated itself several times
thereafter. Slight differences will occur,
but if you keep getting the same value on
the new CBA, be happy with it.
I’ve suggested for years that modelers
keep records of their battery tests. It’s the
trend that counts more than that absolute
value. The CBA allows you to maintain
detailed test records with the click of your
mouse. It not only maintains the test
records, but it allows existing multiple
test graphs to be laid over other graphs,
making comparisons easy and
informative.
I also tested several old Ni-Cd packs at
a 1.0-amp load, and they appeared up to
rated capacity. Then I tested those packs
at a 10.0-amp load, and they indicated
only 50% capacity. The higher and more
realistic load does a much better job when
it relates more to the specific application.
This will be my primary battery tester
from now on! MA
Manufacturer:
West Mountain Radio
18 Sheehan Ave.
Norwalk CT 06854
(203) 853-8080
Fax: (203) 299-0232
www.westmountainradio.com
Edition: Model Aviation - 2005/03
Page Numbers: 55,56,57
Edition: Model Aviation - 2005/03
Page Numbers: 55,56,57
eight-cell Ni-Cd
pack at 15 amps.
That will provide
a much more
realistic
evaluation of the
battery than
could be
obtained with a
500 mA or 1-
amp load.
As you can
see in the photos,
the CBA is a
small cubeshaped
device,
measuring 31⁄2 x
3 x 3 inches. It
contains an integral
cooling fan. You
also receive a cable
that is approximately
6 feet in length, which terminates in a
common USB connector. All power to
the CBA is provided by this cable; no
extra power supply or battery is needed.
That USB connector must be plugged
into a personal computer (PC) with an
operating system of at least Windows
98SE, Me, NT, 2000, or XP.
Unfortunately Macintosh-computer
owners cannot be accommodated at this
time.
A CD is provided that contains the
West Mountain Radio proprietary
software, which must be installed in your
computer. That proved to be an easy
process. All of the operating instructions
are included on the CD.
Keep in mind that the CBA has no
integral meter or LCD screen. All of the
input data and resulting test data must be
viewed on the PC monitor. As part of
this system, test-data graphs are
generated. They can be viewed, they can
be printed using your PC printer, and
they can be saved in a CBA data file on
your PC. You can also print convenient
labels to stick directly on your batteries
to help you remember the last time they
were tested and how they did.
The CBA is also available with an
optional temperature probe that
magnetically connects a thermistor
device in close proximity to your battery
pack. This temperature sensor can warn
you if your battery is overheating during
test discharging. It can also let you know
THIRTY YEARS ago the first Ni-Cd
battery tester hit the hobby market. It was
called the Flite-Life, and it dischargetested
four-cell receiver packs or eightcell
transmitter battery packs at a fixed
load of 300 mA. You had to attach a
household electric clock to this device to
determine the time on discharge. From
that time and the load, you calculated the
capacity in mAh.
Since that humble beginning, dozens
of battery-testing devices have come and
gone. Now most provide the timing and
load integration, such that you read the
capacity directly in mAh! Many allow
you to test a single cell up to 20-, 30-,
and 36-cell packs.
However, the one thing that has been
missing is a load-current value that has
more meaning to the electric-power
enthusiasts. The 300-500 mA load was
fine for RC-system battery packs, but to
test a battery that normally supplies 10,
15, or 20 amps to a motor, at just 500
mA, proves to be of little value. The low
load current will make the battery appear
okay. Then you get out to fly, and the
same battery is dead in a minute or two
of flight time.
Our hobby industry has needed a
battery load-testing device
that can apply realistic load currents to
more closely simulate what motors
consume in flight. Keep in mind that you
don’t want to run your motor for long
periods of time on the ground or in your
shop. Without natural airflow, you can
easily burn out a motor.
To cope with this load problem, West
Mountain Radio has entered our hobby
industry and has a new product called the
Computerized Battery Analyzer (CBA). I
realize that several high-load-current
testers are available. The CBA’s
introductory street price is $89.95, which
makes it attractive.
The CBA can test under load almost
every type of battery, such as Ni-Cd,
NiMH, Li-Ion, Li-Poly, alkaline, carbon
zinc, mercury, and lead acid. Ni-Cd and
NiMH batteries can be tested from one to
38 cells, and Li-Poly batteries can be
tested up to 10 cells. Load limitation is
40 amps, or 150 watts, maximum and up
to 48.0 volts.
Those numbers might seem limiting,
but keep in mind that you can still test an
Te c h n i c a l R e v i e w Bob Aberle
E-mail: [email protected]
West Mountain Radio Computerized Battery Analyzer
Short pair of output leads at right use APP
connectors. Attach battery under test to
this cable. Exiting other side is cable that
goes to PC.
CD contains the proprietary West
Mountain Radio CBA software. It is easy
to load this program into your PC.
Attached to CBA (top left) is 6-foot cable allowing it to connect to
PC. At right is CD you receive with proprietary software program.
At lower center is thermocouple-type heat sensor for checking
battery temperature.
Photos by the author
Thermocouple and cable that allows you to monitor battery
temperature during testing. It plugs into connector located adjacent
to output cable.
CBA is connected to PC and battery under test. CBA depends on
PC to display its data, but you can run other applications on your
PC during battery testing.
USB connector plugs into PC as shown. Upper one is the CBA.
Lower one is for Bob’s digital camera card reader.
CBA is testing two-cell Kokam Li-Poly battery. Temperaturesensor
cable is connected and thermocouple is placed on top
of battery pack.
your battery’s temperature for information purposes. The
software will terminate a test if a battery-temperature limit is
reached before the voltage limit is reached during a high-power
test.
Running a battery load discharge test is simple. Open the
West Mountain Radio software program. After reading it into
your PC from the disc, an icon identifying the program will
appear on your desktop. When you click on that icon, the CBA
data sheet will appear on your monitor.
Plug the cable with the USB connector into a spare USB
port on your PC. Then plug the battery to be tested into the
output cable, which has Anderson Power Pole (APP)
connectors. You will need adapters if your battery doesn’t also
have APP mating connectors.
Now the important part! You must identify the particular
battery pack under “Test Name.” You might want to label it
“Sanyo CP 1700 SCR” or “FMA/Kokam 15C.” Most of the
other data will appear on the graph printout, so there is no need
to have it under Test Name.
Then you choose “Battery Type” from at least eight different
kinds. “Capacity (Ah)” is next! It will allow you to select to
within 100 mAh. So if your battery is rated at 830 mAh (which
is the same as 0.830 Ah), you would set it at 0.800 Ah.
“Voltage” and “Cells” may show up automatically. If not,
set the exact number of cells in your battery. After doing that,
the nominal voltage for that type of battery should be displayed.
“Test Amps” is the load you want to apply. The CBA software
will recommend a test load, but you can change it to a different
value within the device’s limits.
If you choose a high value, a cautionary note may appear on
the PC screen. After being advised, you can either accept the
value or lower your selection. Be aware that the lowest load
setting on the CBA is 0.500 amp (500 mA).
The last item to verify is “Test Cutoff V.” This is the voltage
to which the CBA will take your battery before terminating the
test. For safety reasons this is established by default in the CBA
software. Ni-Cd and NiMH cells are tested down to 0.9 volt per
cell, and Li-Poly cells are tested to 2.8 volts per cell. I agree
with these levels, so I have no problem with that.
After you have made these entries, click on “Start” and the
CBA does the rest. When the test has concluded, you will see a
message on your PC screen. You can print the graph just
created using your regular PC print commands. You can also
save the graph to the CBA folder on your desktop. I was even
Print-screen image was taken much like a photograph during battery test.
Typical print of graph that results at conclusion of each battery test. This was test of
two-cell Apogee 830 mAh Li-Poly battery pack at a 6.0-amp load. Capacity was
recorded at 750 mAh—excellent for 7.2C load.
able to print-screen a graph at a particular
point during a test.
How accurate is the CBA? I inserted a
new AstroFlight Super Whattmeter
between the CBA and the battery pack. I
keep comparison records using several
different battery packs. For the most part,
the Astro meter and the CBA were within
1% of one another. I realize this isn’t an
absolute test, but it gave me a good
feeling that the CBA was doing a reliable
job.
Most important was the fact that
discharge-test results produced the same
capacity readings time after time. I even
noted that after taking 760 mAh out of a
pack, it required something like 760-780
mAh to fully recharge it. The numbers
definitely work!
Repeatability is the most important
item when using any type of battery
tester. It is more important than the
absolute value. For instance, you might
have used a certain tester for many years.
In recent months a particular battery pack
may have tested at 1200 mAh. Then you
switch to the CBA and obtain a capacity
reading of 1250 mAh. You might want to
complain, but I would accept that test
value if it repeated itself several times
thereafter. Slight differences will occur,
but if you keep getting the same value on
the new CBA, be happy with it.
I’ve suggested for years that modelers
keep records of their battery tests. It’s the
trend that counts more than that absolute
value. The CBA allows you to maintain
detailed test records with the click of your
mouse. It not only maintains the test
records, but it allows existing multiple
test graphs to be laid over other graphs,
making comparisons easy and
informative.
I also tested several old Ni-Cd packs at
a 1.0-amp load, and they appeared up to
rated capacity. Then I tested those packs
at a 10.0-amp load, and they indicated
only 50% capacity. The higher and more
realistic load does a much better job when
it relates more to the specific application.
This will be my primary battery tester
from now on! MA
Manufacturer:
West Mountain Radio
18 Sheehan Ave.
Norwalk CT 06854
(203) 853-8080
Fax: (203) 299-0232
www.westmountainradio.com
Edition: Model Aviation - 2005/03
Page Numbers: 55,56,57
eight-cell Ni-Cd
pack at 15 amps.
That will provide
a much more
realistic
evaluation of the
battery than
could be
obtained with a
500 mA or 1-
amp load.
As you can
see in the photos,
the CBA is a
small cubeshaped
device,
measuring 31⁄2 x
3 x 3 inches. It
contains an integral
cooling fan. You
also receive a cable
that is approximately
6 feet in length, which terminates in a
common USB connector. All power to
the CBA is provided by this cable; no
extra power supply or battery is needed.
That USB connector must be plugged
into a personal computer (PC) with an
operating system of at least Windows
98SE, Me, NT, 2000, or XP.
Unfortunately Macintosh-computer
owners cannot be accommodated at this
time.
A CD is provided that contains the
West Mountain Radio proprietary
software, which must be installed in your
computer. That proved to be an easy
process. All of the operating instructions
are included on the CD.
Keep in mind that the CBA has no
integral meter or LCD screen. All of the
input data and resulting test data must be
viewed on the PC monitor. As part of
this system, test-data graphs are
generated. They can be viewed, they can
be printed using your PC printer, and
they can be saved in a CBA data file on
your PC. You can also print convenient
labels to stick directly on your batteries
to help you remember the last time they
were tested and how they did.
The CBA is also available with an
optional temperature probe that
magnetically connects a thermistor
device in close proximity to your battery
pack. This temperature sensor can warn
you if your battery is overheating during
test discharging. It can also let you know
THIRTY YEARS ago the first Ni-Cd
battery tester hit the hobby market. It was
called the Flite-Life, and it dischargetested
four-cell receiver packs or eightcell
transmitter battery packs at a fixed
load of 300 mA. You had to attach a
household electric clock to this device to
determine the time on discharge. From
that time and the load, you calculated the
capacity in mAh.
Since that humble beginning, dozens
of battery-testing devices have come and
gone. Now most provide the timing and
load integration, such that you read the
capacity directly in mAh! Many allow
you to test a single cell up to 20-, 30-,
and 36-cell packs.
However, the one thing that has been
missing is a load-current value that has
more meaning to the electric-power
enthusiasts. The 300-500 mA load was
fine for RC-system battery packs, but to
test a battery that normally supplies 10,
15, or 20 amps to a motor, at just 500
mA, proves to be of little value. The low
load current will make the battery appear
okay. Then you get out to fly, and the
same battery is dead in a minute or two
of flight time.
Our hobby industry has needed a
battery load-testing device
that can apply realistic load currents to
more closely simulate what motors
consume in flight. Keep in mind that you
don’t want to run your motor for long
periods of time on the ground or in your
shop. Without natural airflow, you can
easily burn out a motor.
To cope with this load problem, West
Mountain Radio has entered our hobby
industry and has a new product called the
Computerized Battery Analyzer (CBA). I
realize that several high-load-current
testers are available. The CBA’s
introductory street price is $89.95, which
makes it attractive.
The CBA can test under load almost
every type of battery, such as Ni-Cd,
NiMH, Li-Ion, Li-Poly, alkaline, carbon
zinc, mercury, and lead acid. Ni-Cd and
NiMH batteries can be tested from one to
38 cells, and Li-Poly batteries can be
tested up to 10 cells. Load limitation is
40 amps, or 150 watts, maximum and up
to 48.0 volts.
Those numbers might seem limiting,
but keep in mind that you can still test an
Te c h n i c a l R e v i e w Bob Aberle
E-mail: [email protected]
West Mountain Radio Computerized Battery Analyzer
Short pair of output leads at right use APP
connectors. Attach battery under test to
this cable. Exiting other side is cable that
goes to PC.
CD contains the proprietary West
Mountain Radio CBA software. It is easy
to load this program into your PC.
Attached to CBA (top left) is 6-foot cable allowing it to connect to
PC. At right is CD you receive with proprietary software program.
At lower center is thermocouple-type heat sensor for checking
battery temperature.
Photos by the author
Thermocouple and cable that allows you to monitor battery
temperature during testing. It plugs into connector located adjacent
to output cable.
CBA is connected to PC and battery under test. CBA depends on
PC to display its data, but you can run other applications on your
PC during battery testing.
USB connector plugs into PC as shown. Upper one is the CBA.
Lower one is for Bob’s digital camera card reader.
CBA is testing two-cell Kokam Li-Poly battery. Temperaturesensor
cable is connected and thermocouple is placed on top
of battery pack.
your battery’s temperature for information purposes. The
software will terminate a test if a battery-temperature limit is
reached before the voltage limit is reached during a high-power
test.
Running a battery load discharge test is simple. Open the
West Mountain Radio software program. After reading it into
your PC from the disc, an icon identifying the program will
appear on your desktop. When you click on that icon, the CBA
data sheet will appear on your monitor.
Plug the cable with the USB connector into a spare USB
port on your PC. Then plug the battery to be tested into the
output cable, which has Anderson Power Pole (APP)
connectors. You will need adapters if your battery doesn’t also
have APP mating connectors.
Now the important part! You must identify the particular
battery pack under “Test Name.” You might want to label it
“Sanyo CP 1700 SCR” or “FMA/Kokam 15C.” Most of the
other data will appear on the graph printout, so there is no need
to have it under Test Name.
Then you choose “Battery Type” from at least eight different
kinds. “Capacity (Ah)” is next! It will allow you to select to
within 100 mAh. So if your battery is rated at 830 mAh (which
is the same as 0.830 Ah), you would set it at 0.800 Ah.
“Voltage” and “Cells” may show up automatically. If not,
set the exact number of cells in your battery. After doing that,
the nominal voltage for that type of battery should be displayed.
“Test Amps” is the load you want to apply. The CBA software
will recommend a test load, but you can change it to a different
value within the device’s limits.
If you choose a high value, a cautionary note may appear on
the PC screen. After being advised, you can either accept the
value or lower your selection. Be aware that the lowest load
setting on the CBA is 0.500 amp (500 mA).
The last item to verify is “Test Cutoff V.” This is the voltage
to which the CBA will take your battery before terminating the
test. For safety reasons this is established by default in the CBA
software. Ni-Cd and NiMH cells are tested down to 0.9 volt per
cell, and Li-Poly cells are tested to 2.8 volts per cell. I agree
with these levels, so I have no problem with that.
After you have made these entries, click on “Start” and the
CBA does the rest. When the test has concluded, you will see a
message on your PC screen. You can print the graph just
created using your regular PC print commands. You can also
save the graph to the CBA folder on your desktop. I was even
Print-screen image was taken much like a photograph during battery test.
Typical print of graph that results at conclusion of each battery test. This was test of
two-cell Apogee 830 mAh Li-Poly battery pack at a 6.0-amp load. Capacity was
recorded at 750 mAh—excellent for 7.2C load.
able to print-screen a graph at a particular
point during a test.
How accurate is the CBA? I inserted a
new AstroFlight Super Whattmeter
between the CBA and the battery pack. I
keep comparison records using several
different battery packs. For the most part,
the Astro meter and the CBA were within
1% of one another. I realize this isn’t an
absolute test, but it gave me a good
feeling that the CBA was doing a reliable
job.
Most important was the fact that
discharge-test results produced the same
capacity readings time after time. I even
noted that after taking 760 mAh out of a
pack, it required something like 760-780
mAh to fully recharge it. The numbers
definitely work!
Repeatability is the most important
item when using any type of battery
tester. It is more important than the
absolute value. For instance, you might
have used a certain tester for many years.
In recent months a particular battery pack
may have tested at 1200 mAh. Then you
switch to the CBA and obtain a capacity
reading of 1250 mAh. You might want to
complain, but I would accept that test
value if it repeated itself several times
thereafter. Slight differences will occur,
but if you keep getting the same value on
the new CBA, be happy with it.
I’ve suggested for years that modelers
keep records of their battery tests. It’s the
trend that counts more than that absolute
value. The CBA allows you to maintain
detailed test records with the click of your
mouse. It not only maintains the test
records, but it allows existing multiple
test graphs to be laid over other graphs,
making comparisons easy and
informative.
I also tested several old Ni-Cd packs at
a 1.0-amp load, and they appeared up to
rated capacity. Then I tested those packs
at a 10.0-amp load, and they indicated
only 50% capacity. The higher and more
realistic load does a much better job when
it relates more to the specific application.
This will be my primary battery tester
from now on! MA
Manufacturer:
West Mountain Radio
18 Sheehan Ave.
Norwalk CT 06854
(203) 853-8080
Fax: (203) 299-0232
www.westmountainradio.com