
INSTRUCTION MANUAL
Orion® Dynamo™ Pro 155Wh
Lithium Power Supply
#2309 - US VERSION #2313 - EU AC VERSION
#2314 - UK AC VERSION
Dynamo
155 Wh Lithium Power Supply
110v AC, 12v DC, USB
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™
Pro
CHINA
RoHs
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Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA
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Copyright © 2018 Orion Telescopes & Binoculars. All Rights Reserved. No part of this product instruction or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars.
Telescopes & Binoculars
IN 601 Rev.C 01/19

Congratulations on your purchase of an Orion Dynamo™ Pro Lithium Power Supply. The
generous 155 Watt-hour battery capacity provides power for all of your observing needs. In
addition to powering your astronomical instruments, the Dynamo Pro also serves as a power
supply for a multitude of devices. It includes three 12 volt outputs (15-amp max), three USB
outputs (2.1A Max), and a 100 watt AC output, as well as a red LED flashlight with multiple
brightness options.
1. Operation
Powering 12 Volt Devices (12v/15A output)
The Dynamo Pro will operate up to three devices, powered through the 12v DC output 5.5mm
(2.1mm internal) sockets (figure 2). A single 5.5mm to 12v female cigarette lighter socket is
provided. If your 12v device does not have a cigarette lighter style plug or a 5.5mm DC cable,
then you will need to purchase an adapter. 5.5mm DC cables (5.5mm outer diameter/2.1mm
inner diameter) can be found at your local electronics store, and 12v cigarette lighter cables
can be purchased through Orion. The tip of the plug will receive the positive charge (tip positive) from the Dynamo Pro, so make sure that the device to be powered is also tip positive. If
the device is tip negative, then an adapter is needed. (Some cigarette lighter-type plug adapters allow you to switch between tip positive and tip negative). If all three of the 12V sockets are
being used simultaneously, the total amperage of the 12v devices together must not exceed
15 Amps.
Powering USB devices
The Dynamo Pro has three USB ports that can be used to power or charge USB devices such
as smartphones and tablets, with a max output of 2.1A each. To use, plug the USB device into
the port, and then press the “Batt Check” button (figure 1) in order to send power through
the port to the device. (Note this difference – the 12v output sockets are powered as soon as
you plug the device in. The USB sockets are only powered after a device is plugged in AND
the Battery Check button is pressed). If no device is detected on the USB ports, then the USB
outputs will power down soon after in order to conserve power.
Dynamo
155 Wh Lithium Power Supply
110v AC, 12v DC, USB
™
Pro
RoHs
CHINA
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Powering AC devices
The Dynamo Pro also has a single AC output (fig-
ure 2, 2a, 2b - plug style and voltage depend on
Figure 2.
Dynamo Pro
outputs
Figure
2a. UK AC
output
Figure
2b. EU AC
output
the version purchased - US/EU/UK) port (100w max)
for powering small electronic devices such as lamps,
televisions and laptop computers. Please note laptops can draw 65w (or more), so keep in mind that
a computer can quickly deplete the capacity of the
Dynamo Pro. To use, plug in your AC device, then
press the AC output button (figure 1), and the red
indicator light will turn on, indicating power is being
supplied to the outlet. If no device is detected on the
AC output, the AC port will power down soon after in
order to conserve power.
Also note that the AC output waveform is a modified
sine wave, not a pure sine wave. If you are plugging
in an AC device with a direct AC motor (such as a fan,
laser printer, or output voltage control device such as
a dimmer, they may not work properly. Please check
with the manufacturer for your AC device if it will
work with modified sine wave AC.
Operating the Red LED Flashlight
The flashlight located on the front end of the Dynamo
Pro (figure 3) is a variable-mode light that can be used to provide light to a small area. It
consists of a red LED to preserve night vision under dark skies.
To operate the flashlight, simply press the flashlight On/Off button (figure 3). The brightness
of the light is varied by pressing the On/Off button multiple times. The LED cycles through a
brightness range of: 5%/10%/50%/100%. In any LED brightness level, hold the button down
for 3 seconds to turn the flashlight off, without having to cycle through the brightness range.
2. Recharging the Dynamo Pro
The battery charge percentage is displayed as a series of blue lights next to the Battery Check
button (figure 1). As the battery capacity is depleted, fewer of the blue lights will be lit. The
battery can be recharged from an AC outlet or from a DC source, such as a car cigarette lighter, using the included accessory adapters.
Recharging the Dynamo Pro with AC Current
Recharging the Dynamo Pro with an AC wall outlet requires the included AC adapter. Do not
use substitute AC adapters. The included adapter has an input range of 100-240v 50/60Hz
0.8A, and outputs 15v at 2A.
Simply plug the AC adapter into a wall outlet, and plug the other end into the DC Input Jack of
the Dynamo Pro (figure 3). As the Dynamo Pro charges, the blue battery indicator lights will
flash in series. When all indicator lights are solid, the Dynamo Pro is fully charged. Remove
the AC charger when the battery is fully charged; do no store the Dynamo Pro with the AC
adapter plugged in for a prolonged period of time.
Charging can take up to 7-8 hours depending on how depleted the battery was when charging
commenced.
Recharging the Dynamo Pro with DC Current
Recharging the Dynamo Pro with DC current should be done with the cigarette lighter outlet in
an automobile. The car’s engine must be operating during charging.
3