Skyrc NC2500 Pro User manual

AA/AAA NiMH/NiCD Charger & Analyzer
Instruction Manual

SKYRC NC2500 Instruction Manual
INTRODUCTION
IN THE BOX
MEET SKYRC NC2500 PRO
PRECAUTIONS
FEATURES
SPECIFICATION
CHARGING CURRENT AUTOMATIC ADJUSTED
BATTERY KNOWLEDGE
FOUR WORKING MODES
POWER ON
INSERT AA/AAA BATTERIES
CHARGE MODE
DISCHARGE
REFRESH MODE
BREAK-IN MODE
MOTOR RUN-IN MODE
USB POWER
LED INDICATOR EXPLAINED
ERROR MESSAGES
SYSTEM SETTING
RESCUE BATTERIES
LIABILITY EXCLUSION
WARRANTY AND SERVICE
01
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02
03
03
04
05
06
08
09
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.01 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
INSTRUCTION MANUAL
IN THE BOX
Congratulations on your choice of SkyRC NC2500 Pro Charger!
NC2500 Pro is a six-channel charger for AA/AAA NiMH/NiCD Batteries
with four working modes of Charge, Discharge, Refresh and Break-
in. You can set the proper working current based on different battery
capacities, and the current is adjustable, ranging from 0.1A to 2.5A.
With the wide-viewing LCD screen, NC2500 Pro displays current,
capacity, voltage, elapsed time, and working mode at a glance.
NC2500 Pro features battery internal resistance detection, QC3.0,
motor run-in, and the firmware is upgradable.
NC2500 Pro Charger *1 Manual *1 12V/ 3A Adapter *1

SKYRC NC2500 Pro 02.
SKYRC NC2500 Pro Instruction Manual
Anti-Skid Pads
Rotary Dial
Motor Run Output Port
USB QC3.0
LCD Screen
Back/Stop Button
Status LED Indicator
AA/AAA Slots
12V DC Jack
Type-C Data Port
MEET SKYRC NC2500 PRO

.03 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
Never charge batteries other than NiMH or NiCD. Please read the battery's
manual to ensure it can accept the programmed charge/discharge rates.
Never expose the unit to rain or moisture to avoid fire.
Never use the charger if it appears damaged.
Do place the battery with a positive terminal facing the top. Wrong polarity
may cause fire or explosion.
Do not allow the unit to expose to direct sunlight. Operate in a well-ventilated
area. Do not place the charger on the carpet.
Never allow the battery terminals to become shorted.
Please use the standard AC adaptor included in the package.
The batteries may become hot during charging/discharging(especially at a
high chosen current).
Please use caution while removing batteries after charging/discharging.
Remove all the batteries while not in use.
Four working modes of Charge, Discharge, Refresh and Break-In.
Step charge mode to set the proper current for each charging step.
Adjust current automatically based on the detected battery resistance
Six independent slots to charge six cells simultaneously.
Six LED indicators make working status intuitive.
Set up once, applied to all of the six ports.
Intuitive interface with independent display for each slot.
Information at a glance: Current, Voltage, Capacity, Elapsed time, and
Working mode.
PRECAUTIONS
FEATURES

SKYRC NC2500 Pro 04.
SKYRC NC2500 Pro Instruction Manual
Motor run-in.
Experience a faster charge with USB QC3.0.
Easy operation with the rotary dial.
Reverse polarity prevention
Firmware upgradable.
Input Power: DC 12V 3A
Battery Type: NiMH/NiCD
Battery Size: AA/AAA
Charge Rate: 0.1-2.5A
Discharge Rate: 0.1-1.5A
Discharge Cut-off Voltage: 0.8-1.0V Adjustable
USB Output: QC3.0 5V 3A, 9V 2A,18W Max
- V: 1-8mV Adjustable
Trickle Current: 30-99mA/OFF
Over Temperature Protection: 55-65°F/131-149°F Adjustable
Net Weight: 600g
Size: 148x135x65mm
Voltage: 0.5-6V
Current Limiting: 0.1-2A
Motor Run-in Direction: Auto/ Forward/ Reverse
Time: 1-60Min Adjustable
SPECIFICATION
CHARGE
MOTOR RUN-IN

.05 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
CHARGING CURRENT AUTOMATIC ADJUSTED
Note:
Battery IR(Internal Resistance)
30mΩ<IR≤60mΩ
60mΩ<IR≤90mΩ
90mΩ<IR
Limited to 1.5A
Limited to 800mA
Limited to 400mA
Charge Rate
The internal resistance of the battery usually increases as it is used.
When the battery is used for a long time, its internal resistance will
increase. The internal resistance consumes part of the electric energy
during charging and causes the battery to heat up simultaneously.
We deploy an innovative FlexiPulse algorithm for internal resistance
detection. Once a high internal resistance is detected, the charge
current will automatically decrease to reduce the overall heating to
protect the battery.
Please use the Refresh mode when determining the battery capacity.

SKYRC NC2500 Pro 06.
SKYRC NC2500 Pro Instruction Manual
What is the "C" of a Battery?
Choose the Right Charge & Discharge Rate.
“C” stands for the battery capacity, and the number preceding it is
the fraction of the battery capacity. For example, 0.3C means 0.3
times the capacity for the battery. For a 2400mAh battery, 0.3C
would be 0.3 x 2400mAh = 720mA.
Charge at a rate lower than 0.3C and higher than 1.0C is not
recommended. Charging too slow may affect the charger
termination properly. Charging too fast may cause the battery to
overheat and shorten its lifespan.
Generally speaking, a lower charging rate can prolong the battery
lifespan while charging time will be longer. A higher charging rate
makes charging fast but with the battery heat-up, which will shorten
its lifespan.
Discharge at a rate above 1.0C is not recommended.
Charge/Discharge Rate Reference
BATTERY KNOWLEDGE
What is the Meaning of “mAh” on Rechargeable Batteries?
mAh means milliamp Hour and is a unit that measures (electric)
power over time. It is commonly used to measure the energy
capacity of a battery. In general, the more mAh and the longer the
battery capacity or battery life.
Battery Capacity mAh (milliampere/hour) = discharge (milliampere)
x discharging time (hour)
For example, if you insert a 2400mAh battery into an appliance that
consumes 50 milliampere current continuously, the operating time
will be around 48 hours.

.07 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
AAA Batteries
AA Batteries
Battery Capacity(mAh)
Battery Capacity(mAh)
Charge Rate(mA)
Charge Rate(mA)
700
800
900
1000
1100
1200
1800
2200
2400
2600
2700
700
800
900
1000
1100
1200
1800
2200
2400
2500
2500
350
400
450
500
550
600
900
1100
1200
1250
1300
Discharge Rate(mA)
Discharge Rate(mA)
Battery Matching
Most electronic devices usually require two or more batteries to be
used together. In this circumstance, the worst battery will limit the
device's overall performance.
Battery matching means grouping batteries by a similar capacity to
maximize efficiency. Detect the battery capacity with the Refresh
mode to group batteries easily.

SKYRC NC2500 Pro 08.
SKYRC NC2500 Pro Instruction Manual
Battery Formatting
New batteries and those stored for more than three months become
chemically deactivated. With BREAK-IN mode, NC2500 Pro will
charge & discharge the battery with a small charge and discharge
rate in a charge-discharge-charge sequence. This process may
need to repeat two or three times for complete formatting.
This charger comes with four working modes, each of which will be
used under the different situations as below.
FOUR WORKING MODES
Mode
CHARGE
DISCHARGE
REFRESH
BREAK-IN
Charge the battery with a programmable charge rate.
Discharge the battery with a programmable discharge rate.
Determine the battery's performance based on the actual
capacity it can hold. It's applicable for batteries stored for
more than two weeks and less than three months or for
batteries that are not performing well.
Applicable for new batteries and those stored for more
than three months. The BREAK-IN mode is to activate the
battery with a small charge and discharge rate in a charge-
discharge-charge sequence.
Scenario

.09 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
Ensure there are no batteries inside the slots before powering. Plug
the DC jack into the charger and plug the adaptor into the wall socket.
The LED indicators light up in red-green sequentially and then turn off.
* light up in red-green sequentially
and then turn off.
Inserting AA Batteries Inserting AAA Batteries
Note: When inserting the battery, insert the negative terminal first,
as shown in the picture below. The LED indicator will light in solid
orange. Please check the battery connection if the LED indicator
does not light up.
POWER ON
INSERT AA/AAA BATTERIES

SKYRC NC2500 Pro 10.
SKYRC NC2500 Pro Instruction Manual
Please refer to the BATTERY KNOWLEDGE to select an
appropriate rate to charge the battery.
Suitable for batteries that need to be recharged without determining
the capacity. Applicable for charging the batteries in a good
performance and continuous use.
Insert the batteries into the slots. The LED indicator light solid
orange means the battery is in good contact with the charger.
Otherwise, recheck the battery connection.
Rotate the knob, move the cursor to CHARGE, short-press the
ENTER key to set the charging parameters.
Rotate the knob, move the cursor to CURRENT, short-press the
ENTER key, rotate the knob to set the proper charge current when
the CURRENT value is blinking. Then short-press the ENTER key
again to confirm.
Rotate the knob, move the cursor to DELTA PEAK, short-press the
ENTER key, rotate the knob to set the proper delta peak value when
the DELTA PEAK value is blinking. Then short-press the ENTER
key again to confirm.
*When NC2500 Pro detects the DELTA PEAK value reaches the set value,
the charger will determine that the battery is fully charged.
Rotate the knob, move the cursor to TIMER, short-press the ENTER
key, rotate the knob to set the proper TIMER value when the TIMER
value is blinking. Then short-press the ENTER key again to confirm.
*To prevent the battery from being overcharged due to the failure of the
charger, the charger will stop when the charging time exceeds the set TIMER
value.
CHARGE MODE
WORKING MODES
1.
2.
3.
4.
5.

.11 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
Rotate the knob, move the cursor to TRICKLE CHARGE, short-
press the ENTER key, rotate the knob to set the proper trickle
charge current when the TRICKLE CHARGE value is blinking. Then
short-press the ENTER key again to confirm.
Rotate the knob, move the cursor to STEP CHARGE, short press
the ENTER key, rotate the knob to turn on Step Charge when OFF
is blinking. Then short-press the ENTER key again to confirm.
*SETP CHARGE mode default to be OFF. It supports up to three stages
of charging. Users can set each stage of charging according to the battery
capacity, which helps to prolong battery life. This mode requires users to have
more professional battery knowledge, use it with caution.
When all parameters are set, rotate the knob, move the cursor to
START, and short press the ENTER key to start charging.
The LED indicator will be pulsing in GREEN during the charging
process.
The LED indicator will be solid GREEN once the charging process is
completed.
6.
7.
10.
8.
9.
Working Mode
Channel
Charge /
Discharge Rate
Battery
Voltage
Capacity
Elapsed Time

SKYRC NC2500 Pro 12.
SKYRC NC2500 Pro Instruction Manual
Please refer to BATTERY KNOWLEDGE to select an appropriate
rate to discharge the batteries.
Insert the batteries into the slots. The LED light is in solid orange,
indicating the battery is in good contact with the charger. Otherwise,
recheck the battery connection.
Rotate the knob, move the cursor to DISCHARGE, short-press the
ENTER key to set the discharging parameters.
Rotate the knob, move the cursor to CURRENT, short-press the
ENTER key, rotate the knob to set the proper discharge current
when the CURRENT value is blinking. Then short-press the ENTER
key again to confirm.
Rotate the knob, move the cursor to CUT OFF, short-press the
ENTER key, rotate the knob to set the proper cut-off voltage when
the CUT OFF value is blinking. Then short-press the ENTER key
again to confirm.
Rotate the knob, move the cursor to START, short press the ENTER
key to start discharging.
The LED indicator will be pulsing in RED during discharging.
The LED indicator will be solid GREEN once discharging is completed.
To start the DISCHARGE mode.
DISCHARGE MODE
1.
2.
3.
4.
5.
6.
7.
To determine the battery performance based on the capacity it can
hold after a charge, discharge, and charge cycle, please refer to the
BATTERY KNOWLEDGE to select an appropriate rate.
View the actual amount charged in the final cycle on the charger.
REFRESH MODE

.13 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
Insert the batteries into the slots. The LEDs are solid orange
indicating the battery is in good contact with the charger. Otherwise,
recheck the battery connection.
Rotate the knob, move the cursor to REFRESH, short-press the
ENTER key to set the parameters.
Rotate the knob, move the cursor to CHARGE, short-press the
ENTER key, rotate the knob to select the proper charge current
when the CHARGE value is blinking. Then short-press the ENTER
key again to confirm.
Rotate the knob, move the cursor to DISCHARGE, short-press the
ENTER key, rotate the knob to select the proper discharge rate
when the DISCHARGE value is blinking. Then short-press the
ENTER key again to confirm.
Rotate the knob, move the cursor to REST TIME, short-press the
ENTER key, rotate the knob to set the proper rest time when the
REST TIME value is blinking. Then short-press the ENTER key
again to confirm.
Rotate the knob, move the cursor to CYCLE, short-press the ENTER
key, rotate the knob to select the proper cycle times when the CYCLE
value is blinking. Then short-press the ENTER key again to confirm.
Rotate the knob, move the cursor to START, short press the ENTER
key to start refreshing.
The LED indicator will be pulsing in GREEN during the charging
process and pulsing in RED during discharging.
The LED indicator will be solid green when the process is completed.
Applicable for charging batteries in poor performance. Also suitable
for batteries that need to determine the capacity.
To start the REFRESH mode.
1.
2.
3.
4.
5.
6.
7.
8.
9.

SKYRC NC2500 Pro 14.
SKYRC NC2500 Pro Instruction Manual
Charge the batteries at 0.1C(0.1*battery capacity) for 16 hours and
rest for 1 hour. Then, fully discharge the batteries at 0.2C and rest for
1 hour again. Finally, charge the batteries at 0.1C for 16 hours again.
BREAK-IN applies to the batteries which the REFRESH mode cannot
rescue.
The process takes 39-45 hours to complete.
Insert the batteries into the slots. The LED lights in solid orange,
indicating the battery is in good contact with the charger. Otherwise,
recheck the battery connection.
Rotate the knob, move the cursor to BREAK-IN, short-press the
ENTER key to set the parameters.
Rotate the knob, move the cursor to CAPACITY, short-press
theENTER key, rotate the knob to select the proper battery capacity
when the CAPACITY value is blinking. Then short-press the ENTER key
again to confirm. Then set the left five ports battery capacity one by
one.
When all parameters are set, rotate the knob, move the cursor to
START, and short press the ENTER key to start charging.
The LED indicator will be pulsing in GREEN during the charging
process and pulsing in RED during discharging.
The LED indicator will be solid green when the process is completed.
To start the BREAK-IN mode.
BREAK-IN MODE
1.
3.
2.
4.
5.
6.

.15 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
Connect the motor to the
MOTOR RUN-IN output port.
Rotate the knob, move the cursor to MOTOR RUN, short-press the
ENTER key to set the parameter setting.
Rotate the knob, move the cursor to VOLTAGE, short-press the
ENTER key, rotate the knob to select the proper output voltage
when the VOLTAGE value is blinking. Then short-press the ENTER
key again to confirm.
Rotate the knob, move the cursor to CURRENT LIMITING, short-
press the ENTER key, rotate the knob to set the proper current
limiting value when the CURRENT LIMITING value is blinking. Then
short-press the ENTER key again to confirm.
Rotate the knob, move the cursor to DIRECTION, short-press the
ENTER key, rotate the knob to select the motor rotation's direction
when DIRECTION is blinking. Then short-press the ENTER key
again to confirm.
Rotate the knob, move the cursor to TIME, short-press the ENTER
key, rotate the knob to select the proper break run-in time when the
TIME value is blinking. Then short-press the ENTER key again to
confirm.
Insert the batteries into the slots. The LED lights in solid orange,
indicating the battery is in good contact with the charger. Otherwise,
recheck the battery connection.
Rotate the knob, move the cursor to BATTERY METER, short-press
the ENTER key to check the battery voltage and internal resistance.
MOTOR RUN-IN MODE
BATTERY METER
1.
2.
3.
4.
6.
5.

SKYRC NC2500 Pro 16.
SKYRC NC2500 Pro Instruction Manual
NC2500 Pro charger supports QC3.0, and the maximum output power
is 18W. It will start charging once connecting your device to the USB
POWER port, and you can view the output voltage/current/power,
charging capacity, and charging time through the USB POWER
interface.
Note:
To keep the MOTOR RUN-IN working simultaneously with the main
ports, you have to start MOTOR RUN first, then go back to the menu,
start the charging or discharging process of the main ports.
USB POWER
USB POWER
OUTPUT VOLTAGE: 9V
OUTPUT CURRENT: 2A
POWER: 18W
CAPACITY: 500mAh
TIME: 00: 15: 20
Rotate the knob, move the cursor to START, short press the ENTER
key to start MOTOR RUN-IN.
7.
Working Mode Elapsed Time
Back to Menu
Output Voltage
Current Limiting
Direction of rotation

.17 SKYRC NC2500 Pro
SKYRC NC2500 Pro Instruction Manual
Note:
1. If the USB output cannot reach the maximum charge power, check
whether your device supports the QC3.0 protocol.
2. This function is unusable during the NC2500 Pro charging process
and available to use while discharging.
LED INDICATOR EXPLAINED
LED Indicator
Orange
Pulsing in GREEN
Pulsing in RED
Solid Green
Blinking Red
Stand by
Charging
Discharging
Complete
Error
Explanation
ERROR MESSAGES
Error Messages
DC INPUT ERROR
OVERLOAD
OVERHEATING
BATTERY ERROR
Input Voltage too High or too Low
Motor Run-In Overload
Internal Temperature Too High
Battery Error
Explanation

SKYRC NC2500 Pro 18.
SKYRC NC2500 Pro Instruction Manual
SYSTEM SETTING
Setting Choice
BACKLIGHT
KEY SOUND
TEMP. UNIT
FIRMWARE
UPDATE
LANGUSAGE
DEFAULT
SETTING
SYSTEM
INFO.
Temp.
ON/1-30Min
ON/OFF
°C/°F
/
ENGLISH
/JAPANESE
/
/
55-65°C
/131-149°F
Sets the display backlight time.
he beep or melody sounded at various times during
operation.
You can choose the temperature displayed by Celsius
or Fahrenheit as you like.
Firmware update.
You can choose the intented language displayed in
English or Japanese.
Press and hold the ENTER key to load the factory
setting.
It shows the hardware version and firmware
version.
When the charger temperature exceeds the set value,
the working current will decrease automatically to
reduce heat generation. If the temperature continues to
rise, the process will terminate.
Description