Page 1
Thank you for purchasing the ProTek R/C "Super Pro 20" Power Supply. This is one of the most powerful, easy to
operate, feature packed power supplies available. When properly cared for, the Super Pro 20 power supply will provide
you with years of efficient and reliable operation.
Operating Instructions:
Ensure that no load is connected to the power supply before connecting to a 110V AC power source
Always place on a stable, flat surface
Do not overload the power supply (no more than a 20 Amp load)
Each switched output can deliver a maximum of 16 amps
Verify the correct polarity of the output terminals before connecting any device (Red = Positive / Black =
Negative) and Do not reverse the polarity
Verify that the LED is on and that the cooling fan is operating
The power supply may become warm during operation or emit a slight buzzing sound, this is normal. If the unit
becomes hot to the touch, disconnect immediately
The power cord can be replaced with any computer power supply cord so that it may be used in different
countries
Safety Precautions:
Do not leave the power supply unsupervised while in use
Keep power supply away from heavy vibration, moisture, dust, or excessive heat
Do not move the power supply while in use
Do not operate near fire or water
Use care when transporting to avoid any kind of impact
Do not operate with wet hands
Do not modify, disassemble, or service the power supply, this will void the warranty
Do not use the power supply to charge a battery, or connect a battery directly to the terminals
Do not connect incompatible chargers to the power supply (do not exceed the amperage load)
Page 2
The most important factor to consider when using any power supply is to ensure that the unit can supply sufficient
wattage as well as amperage to efficiently operate your charger. There is a simple equation that you can use to
determine the wattage necessary to supply the charger with the power needed to charge a battery. This equation
should be performed before you charge any battery with specifications that differ from the battery you are familiar with.
Step 1: Volts x Charge Rate in Amps = Watts
First, start with part 1 of the equation to determine the wattage necessary to charge the battery; Voltage x Charge Rate
in Amps = Watts. For an example of this equation, we are going to use a 2S, 5000mAh battery, charging at a 1C amp rate.
So, a 2S battery is 7.4 volts, and a 1C charging amp rate for a 5000mAh battery is 5 amps. So you will need to multiply
7.4V x 5Amps, which equals 37 watts.
Step 2: Watts / Power Supply Output Voltage = Amperage
The Second part of the equation is how you determine the necessary amperage. Start by taking the watt value from part
1 of the equation (in our example, 37 watts), and divide it by the output voltage provided by the power supply. We will
be using 13.8V as our baseline number, because the ProTek Super Pro 20 Power Supply produces 13.8V of output
voltage. So, because the wattage determined in part one is 37W, we will divide that by 13.8V. When you perform the
37W / 13.8V equation, you get a amp rate of 2.68 Amps. So, your power supply would need to be capable of producing
2.68 amps, to charge a 2S, 5000mAh battery, at a 5 Amp Charge Rate (1C).
So the complete equation is: Power Supply Amperage = (Battery Volts x Charge Rate) / Power Supply Voltage
Now as a second example we will do the equation with a more powerful battery. Let's say you want to find the
necessary Supply Amperage for a 6S, 8000mAh battery at a 2C charging amp rate. 22.2V x 16A = 355 Watts. Then divide
355W by 13.8V; which equals 25.73 Amps.
Equation:
Step 1: Voltage x Charge Rate in Amps = Watts
Step 2: Watts / Power Supply Output Voltage = Necessary Power Supply Amperage
Proper Equation: Power Supply Amperage = (Battery Volts x Charge Rate) / Power Supply Output Voltage
While this calculation may seem complicated at first, it gets easier the more you do it. With today’s high energy Lithium
Polymer Cells and evolving battery technology it is important that you learn this math to ensure peak performance and
maximum life span from your batteries and support gear. Ensuring "A Higher Level of Performance", ProTek R/C is here
to give you the products necessary to move you to the front of the pack, and the brain power to keep you there. Class is
dismissed...Now go have fun!!!
Super Pro 20 Specifications:
Input Voltage: 110-240V AC
Output Voltage: 13.8V DC +/- 5%
Wattage: 260W
Current: 0-20 Amp
Frequency: 50 / 60Hz
Output Connections:
(1) 20 Amp 4mm Banana Plug/Binding Post Output
(2) 16 Amp 4mm Switched Banana Plug Outputs
(1) 500mAh USB Plug Output
Size (LxWxH): 190x170x85mm
Weight: 2.86 (1.3 kg)
Disclaimer and Warranty
All ProTek RC power supplies are covered by manufacturer warranty against defects in materials and workmanship for
one (1) year after original purchase date. Warranty will not cover power supplies that have been modified,
disassembled, or otherwise misused according to the included instructions. ProTek R/C is not responsible for bodily
injury and/or property damage that may occur from the use of, or caused by, this power supply.
Loading...