powerful little battery pack is very flexible, it can act as a 5 volt battery
or a 19 volt battery with 14 steps in between. Outputs at 5V , 5.5V , 6V , 6.5V
, 7.5V , 8.4V , 9V , 10V , 11V , 12V , 13V , 14V , 15V , 16V , 18V , or19V. It
can also be charged with voltages as low as 9 volts and as high as 24VDC.
rechargeable battery pack consists of a 60 watt hour lithium ion battery
assembly and two DC/DC converters. The first DC converter allows the pack to be
charged with a wide range of voltage inputs. The second allows the pack to
deliver a user settable voltage to run equipment requiring 5volts to 19+volts.
All this is built into the sleek black battery case.
For example, this
industrial model is used by OEMs to be their battery back-up to add UPS
features to their equipment as well as portability. You can run the system from
the included charger through the battery pack. When the AC power fails the
battery takes over with no interruption in service. This is called a double
conversion UPS with DC output.
Special Features :
- 60 Watt-Hour battery pack with flexible output voltage
(upgradeable to 104 watt-hours).
- Automatic overcharge protection
- Gas gauge feature tells how much battery power is
- Highly regulated voltage source, doesn't sag in voltage like
- The PST-MP3500-I is designed to charge while running your
equipment, just plug the charger into the PST-MP3500-I and the battery pack
into the laptop computer.
- The charger section of the battery pack has a DC/DC converter
with a wide input range. This means that the pack can be charged from a wide
variety of sources. The input voltage for charging can be as low as 5 volts and
as high as 24 volts. This makes the PST-MP3500-I perfect for energy harvesting
type charging from (for example) unregulated solar panels as long as the input
voltage doesn't go above 24 volts.
- This can be used as a DC battery backup. If you run your
instrument from the pack while the pack is being charged from the mains the
battery will take over when the mains fail.
Price includes Battery, case, bag, AC
charger, cable kit and barrel plug adapters
Add-on battery which doubles the capacity of
|PST-MP3500-cable kit. Optional extra output cable and
|Part Number PST-Cig21
Optional car charger
Price $8.00 each
||The included power supply for charging has
an input of 90-240 VAC, 50/60 Hz, 19 volts output. It will charge the battery
in about 1.5 hours
||The charging voltage can be between 9 volts
and 24 volts. The current drawn from the charging source is limited to about 1
amp, so the pack will charge faster at the higher input voltages.
If you are
also running a load then the input current raises to the power required by the
charging plus the power required by the load.
|Continuous Output Power
||4 amps or 60 Watts, see the output current a
different voltages chart below
|Output Voltage Steps
||5V , 5.5V , 6V , 6.5V , 7.5V , 8.4V , 9V ,
10V , 11V , 12V , 13V , 14V , 15V , 16V , 18V , 19V
Note: when drawing more than 40 watts continuously the battery pack
gives of significant heat. Provisions should be made for air flow or heat
sinking if the battery is in a closed container.
|5 Volt 4 amp continuous, 20 watts
|5.5 Volt, 4 amps continuous, 22 watts
|6 Volts 4 amps continuous, 24 watts
|6.5 Volts, 4 amps continuous, 26 watts
|7.5 volts 4 amps continuous, 30 watts
|9 volts 4 amps continuous, 36 watts
|10 Volts, 4 amps continous, 40 watts
|11 Volts, 4 amps continuous, 44 watts
|12 volts 4 amps continuous, 48 watts
|15 volts, 4 amps continuous, 60 watts
|16 volts, 3.75 amps continuous, 60
4 amps for 5 minutes, 64 watts
|18 volts, 3.3 amps continuous, 60 watts
|19 Volts, 3.16 amps continuous, 60
||60 watt hours
(double this capacity for the combination of MP3500-I plus
|11.7 AH at 5 volts
|10.9 AH at 5.5 volts
|9.9 AH at 6 volts
|9.1 AH at 6.5 volts
|7.8 AH at 7.5 volts
|7.1 AH at 8.4 volts
|6.4 AH at 9 volts
|6.0 AH at 10 volts
|5.4 AH at 11 volts
|4.9 AH at 12 volts
|4.6 AH at 13 volts
|4.4 AH at 14 volts
|3.9 AH at 15 volts
|3.75 AH at 16 volts
|3.3 AH at 18 volts
|3.1 AH at 19 Volts
|Output DC/DC converter efficiency
||88% at 5V output, 93% at 19V output
||Charge input is a 5.5 x 2.1mm barrel
||3.28 x 6.8 x 0.92 inches (85 x 173 x 23.4
||3-4 hours using the 19V output AC charger
|USB Charge Port
||Yes, it puts out 5V no matter what the main
output voltage is set to, essentially turning the pack in to a 2-voltage
||There is an audio alarm that sounds when the
battery is close to being empty. It sounds when the battery is 3% to 5% full
and will sound until the battery shuts off.
||Battery pack, charger, output cord, case,
barrel adapters, barrel adapter storage
||Included is a universal AC input (100-240
VAC 50/60Hz) 19 volt 3.16 amp power supply that is used for charging. It has a
5.5 x 2.1 mm barrel connector. Charger dimensions are 67x31x106 mm.
power supply has CE, UL, CCC, TUV.
||440g, 1 Pound without the output cord
grams for the add-on pack
||2.35 Outside Diameter x 0.75mm Inside
Diameter digital camera style
4.0 OD x 1.7mm ID
4.75 OD x 1.75mm
5.5 OD x 2.1 mm ID
5.5 OD x 2.5 mm ID
6.3 OD x 3 mm ID
to 6.5)OD x 4.25 ID with 1.5mm center pin
|Output socket information for
||The output socket is a special 3-pin
mini-din made by Kycon. If you need some mating connectors because you want to
make your own cables the data sheet is here . They
are readily available from Mouser.
| 16 connector set
available extra, click here.
If the connectors that are included don't
have the one you need you can order this kit which has the 16 most popular
connectors in it.
It also works with any of the connector adapters with
4 mm pin spacing such as this one that might be available to you
|A picture of how the auxiliary battery
attaches to double the capacity.
|There is a 6-pin connector to link two
batteries together with, such as the picture above. Here is the pinout.
Normally you won't need this information.
Typical run time calculations
|Power Drawn from Battery(Watts =
||Continuous Running Time
||Time with MP3460
Voltage versus time discharge curves. You can see that,
unlike plain batteries, the output voltage is precisely regulated until the
battery runs out of stored energy.
You can see that unlike plain batteries this pack delivers exact regulated
voltage until the pack runs out of juice. This is very helpful for instruments,
cameras, thermal cameras, lights, and other applications that work best with
regulated power. For comparison, most laptop batteries use 14.4 volts and 2.2
AH, so this can run a laptop longer than the built-in battery.
laptops can be run at lower voltage than the manufacturer's power pack would
indicate, they just can't charge the battery at lower voltages. In this case it
is a good idea to run the battery pack at 12 to 14 volts so no power is wasted
charging the laptop's internal battery. However, you can't always use this
trick, my ACER won't run at all unless I give it the full rated
Click here to download a quick-start PDF
graphic manual that shows how to use these external battery packs.
Q: Is it legal to take these spare batteries
A: The PST-MP3500-I has about 3.2 grams of
equivalent lithium, and the combination of the PST-MP3500-I and PST-MP3460
contain about 6.4 grams of equivalent lithium, so they are OK to take in
carry-on luggage. See the governement web page
for more details.
Q: I have a 60 watt laptop, will this 50 watt
battery pack work with it?
A: Yes, the 60 watts is the maximum
that the computer can use, including charging the internal battery. It is
recommended that the PST-MP3500-I be used when the laptop's internal battery is
full or removed. Some computers will also run fine on lower voltage (12V, 14,
or 16V) which will prevent the internal battery from being charged, if you
don't waste energy charging the internal battery you will get you even more run
time from the external battery pack. In addition the PST-MP3500-I can supply up
to 60 watts when the laptop needs peak power.
Q: The AC charger
that is included, is it a peak charger? So that it switches off the charging
process when the battery is fully charged?
A: The charging
circuit is actually built into the battery case. So the charger that comes with
it is just a power supply. In fact any voltage between 5VDC and 24VDC can be
used to charge it. The internal charger is a smart charger, it will not
overcharge the battery. In fact when I am in China I leave the battery
connected to the computer and run the "charger" into the battery. That way I
only have to bring one power supply with me.
December 2006. I have been using one of these packs
since July of 2006, first on a trip to China and then on several smaller trips
and also in the lab to create the curves shown above. It was very nice to be
able to run my 60 watt Acer laptop as long as I could stand to work on the bus
and the plane rides. You can also see the impressive voltage regulation and
runtime from the curves.
I have also been impressed that it will
recharge from voltage sources as low as 5 volts, I have recharged mine at 5
volts, 9 volts, 12-14 volts (car cigarette lighter), at 14, at 16, 19, and even
24 volts. The data sheet now says 9V, because at 5 volts the charge rate is too
slow for practical applications. I am sure that it will charge at any voltage
above 9V and less than 24V. I have a little solar charger that I would like to
try, but my office window faces north toward the mountains and I don't get much
I wrote a WordPerfect macro to time how
long it took for the computer to shut down due to running low on battery power.
Then I ran my Acer a couple of ways to measure how much more time the MP3500-I
||Hours and minutes
|Internal Battery alone
||1 hour 24 minutes
|Intermal Battery + MP3500-I
||2 hours 35 minutes
|Internal Battery + MP3500-I + MP3460
||3 hours 46 minutes
Harry M: I would like to say that this
is the BEST UPS appliance I've come across with and I'm very pleased with the
product itself. I'm planning to buy more in the near future for other