SKYRC NC2200 Battery Charger & Analyzer

Product Introduction

Thank you for purchasing the SKYRC NC2200 Charger & Analyzer. This charger is designed for AA/AAA NiMH/NiCD batteries and features four independent slots. The display interface offers five operating modes: Fast Charge, Charge, Discharge, Refresh, and Activate. Users can set the current from 0.2-2.2A based on battery capacity. The wide-view VA display shows information such as current, capacity, internal resistance, battery voltage, charging time, and operating mode. The charger can also connect to a mobile app via an optional Bluetooth module (SK-600135) to view charging curves and update firmware.

Package Contents

• NC2200 Charger *1
• Instruction Manual *1
• 12V/2A Power Adapter *1

Safety Precautions

• Do not charge batteries other than NiMH/NiCD. Consult the battery manufacturer to ensure compatibility with charging/discharging current settings.
• Do not expose the device to rain or humid environments to prevent fire hazards.
• Do not use the charger if it appears damaged.
• When inserting batteries, pay attention to the positive (+) and negative (-) polarity markings on the charger. Always insert the battery with the positive terminal facing upwards. Incorrect polarity may cause fire or explosion.
• Do not expose the device to direct sunlight. Operate in a well-ventilated environment. Do not place the device on carpets.
• Avoid short-circuiting battery terminals.
• Use only the supplied adapter.
• Rechargeable batteries may become hot during charging (especially at high charging currents). Handle batteries with care after charging to avoid burns.
• Remove all batteries when not in use.

Features and Specifications

• Four independent charging slots, capable of charging up to four batteries simultaneously.
• Four LED indicators for clear status visibility.
• Five operation buttons for simple control.
• Five operating modes: Fast Charge, Charge, Discharge, Refresh, Activate.
• Turbo one-key fast charging, with up to 2.2A current per slot.
• The charger automatically adjusts current based on battery internal resistance.
• Set a program once and long-press to synchronize across all slots.
• Wide-view VA display with wide viewing angle, high contrast, and fast response time.
• Independent display for four channels, offering a more intuitive interface.
• Displays various information: current, capacity, charging time, battery internal resistance, battery voltage, and operating mode.
• Connect to mobile app via optional Bluetooth module to view charging curves and update firmware.

Specifications:

• Battery Type: NiMH/NiCD
• Battery Size: AA/AAA
• Charging Current: 0.2-2.2A (0.1A steps)
• Discharging Current: 0.1-1.0A (0.1A steps)
• Discharge Cut-off Voltage: 0.9V
• Supported Battery Capacity: 500-3200mAh
• Capacity Protection: 3200mAh
• Input Power: DC 12V/2.0A
• Ripple: 5mV
• Trickle Current: 50mA
• Weight: 370g
• Dimensions: 112.1*108*62 mm

Automatic Charging Current Adjustment

Battery internal resistance typically increases with usage time. High internal resistance consumes some power during charging and generates heat. The charger has a built-in internal resistance detection system. When high internal resistance is detected, it automatically reduces the charging current to lower heat generation and protect the battery.

Note: For testing battery capacity, use the Activate mode.

Manual Information Viewing

When multiple slots are operating, press the "Slot" button to switch channels, then press the "ENTER" button [enter-key] to lock and view specific information.

Battery Knowledge

What does mAh mean for a battery?

mAh is the unit of battery capacity, commonly known as "milliampere-hour". mAh represents a calculation of capacity and time. For example, 2400mAh can supply a 50mA device for 48 hours.

What is "C" for a battery?

"C" represents battery capacity, and the number in front of it is a fraction of the capacity. For example, 0.3C means three-tenths of the battery's capacity. For a 2400mAh battery, 0.3C is equivalent to 720mA (three-tenths of 2400mAh).

Choosing Appropriate Charge/Discharge Current

It is not recommended to charge at rates below 0.3C or above 1.0C, as slow charging may affect the charger's ability to determine full charge, and fast charging may cause overheating and damage the battery, affecting its lifespan.

Generally, lower charging rates extend battery life but take longer. Higher charging rates are faster but can lead to higher battery temperatures, impacting lifespan.

Discharging at rates above 1.0C is not recommended.

Recommended Current Settings:

AAA Batteries:

AA Batteries:

Battery Matching

Many devices require two or more batteries used together. When these batteries are connected in series, the overall performance of the device is limited by the weakest battery. In other words, a poor-performing battery can affect the device's operating time. Therefore, battery matching primarily involves pairing batteries with similar capacities. This maximizes battery efficiency. Users can group batteries by capacity using the Activate mode.

Battery Activation (Break-In)

New batteries or batteries stored for over three months may lose their activity. The Activate (Break-In) mode uses a low current to cycle batteries through charge-discharge-charge sequences to reactivate them. In some cases, this process may need to be repeated two to three times.

Five Operating Modes

This product has five operating modes, each suited for different situations:

Operation Steps

1. Before connecting the power adapter, ensure there are no batteries in the charger slots. Connect the adapter's DC plug to the charger, then plug the adapter into the wall socket.
2. Insert AA or AAA batteries.

   Note: Insert the battery's negative terminal first, as shown in the diagrams. If multiple batteries are inserted simultaneously, the charger will display setup interfaces in the order of insertion.

   Diagram: AA Battery Insertion (Negative terminal first, then positive)

   Diagram: AAA Battery Insertion (Negative terminal first, then positive)

3. Setup and Start:

   Automatic Start: If no operation is performed within 10 seconds of inserting batteries, the charger defaults to CHARGE mode with a 1000mA current for automatic charging. If a slot has been used previously and the charger has not been powered off, inserting a battery and performing no operation within 10 seconds will default to the last used mode and current, starting automatically.

   Setting Discharge Mode (Example):

   • When "CHARGE" is flashing, it indicates mode selection. Press the "Down" [down-arrow] or "Up" [up-arrow] buttons to select the operating mode, then press the "ENTER" button [enter-key] to confirm.
   • "SET DISCHARGE RATE" prompts for discharge current setting. Press the "Down" [down-arrow] or "Up" [up-arrow] buttons to select the discharge current, then press the "ENTER" button [enter-key] to confirm and start discharge.

   Note: Long-pressing the "ENTER" button [enter-key] can synchronize this setting to all other channels.

   Diagram showing mode selection interface with options like CHARGE, DISCHARGE, REFRESH, BREAK-IN.

   Diagram showing discharge rate setting interface.

   Diagram showing confirmation of discharge rate.

4. During charging, the red LED will be constantly lit.

   Note: It is normal for batteries to heat up and the charger to emit faint sounds during charging/discharging.

5. Upon completion of charging, the green LED will be constantly lit.

Operating Modes Details

Charge Mode (CHARGE)

• Charge batteries according to the set current. Refer to Battery Knowledge section for appropriate current selection.
• Suitable for charging, but not for testing rated capacity. Ideal for commonly used and well-performing batteries.

Starting Charge Mode:

1. Insert battery.
2. When "CHARGE" flashes, press "Down" [down-arrow] or "Up" [up-arrow] to select Charge mode (CHARGE), then press "ENTER" [enter-key] to confirm.
3. "SET CHARGE RATE" prompts for charging current. Press "Down" [down-arrow] or "Up" [up-arrow] to select the appropriate current, then press "ENTER" [enter-key] to confirm and start charging.

Note: To synchronize this setting to all channels, long-press the "ENTER" [enter-key] button for two seconds.

4. During charging, the red LED is constantly lit.
5. Charging complete, the green LED is constantly lit.

Fast Charge Mode (TURBO CHARGE)

• Force fast charging for slots currently charging.

Note: This mode requires batteries with good performance. In TURBO mode, the charger automatically detects battery internal resistance. If the internal resistance exceeds 40mΩ, the internal resistance value and LED indicator will flash (red LED flashing). The charger will stop working to protect the battery.

Starting Fast Charge Mode:

1. During charging, long-press the "TURBO" [turbo-key] button for five seconds to start fast charging.
2. During charging, the red LED is constantly lit.
3. Charging complete, the green LED is constantly lit.

Discharge Mode (DISCHARGE)

• Discharge batteries according to the set current. Refer to Battery Knowledge section for appropriate current selection.

Starting Discharge Mode:

1. Insert battery.
2. When "CHARGE" flashes, press "Down" [down-arrow] or "Up" [up-arrow] to select Discharge mode (DISCHARGE), then press "ENTER" [enter-key] to confirm.
3. "SET DISCHARGE RATE" prompts for discharge current. Press "Down" [down-arrow] or "Up" [up-arrow] to select the appropriate current, then press "ENTER" [enter-key] to confirm and start discharge.

Note: To synchronize this setting to all channels, long-press the "ENTER" [enter-key] button for two seconds.

4. During discharge, the red LED is constantly lit.
5. Discharge complete, the green LED is constantly lit.

Refresh & Analyze Mode (REFRESH & ANALYZE)

• Perform charge and discharge cycles with set currents. Analyze battery performance based on the final charged capacity. Refer to Battery Knowledge section for appropriate current selection.
• The last charging cycle allows viewing the total capacity charged.
• Suitable for batteries with lower performance and for determining actual battery capacity.

Starting Refresh & Analyze Mode:

1. Insert battery.
2. When "CHARGE" flashes, press "Down" [down-arrow] or "Up" [up-arrow] to select Refresh & Analyze mode (REFRESH & ANALYZE), then press "ENTER" [enter-key] to confirm.
3. "SET CHARGE RATE" prompts for charging current. Press "Down" [down-arrow] or "Up" [up-arrow] to select the appropriate current, then press "ENTER" [enter-key] to confirm.
4. "SET DISCHARGE RATE" prompts for discharge current. Press "Down" [down-arrow] or "Up" [up-arrow] to select the appropriate current, then press "ENTER" [enter-key] to confirm and start.

Note: To synchronize this setting to all channels, long-press the "ENTER" [enter-key] button for two seconds.

Refresh & Analyze Mode Work Process:

• Charge, rest for one hour.
• Discharge, rest for one hour.
• Fully charge.
• During program operation, the red LED is constantly lit.
• Program complete, the green LED is constantly lit.

Activate Mode (BREAK-IN)

• Charge at 0.1C (0.1 * battery capacity) for 16 hours, rest for one hour, then discharge at 0.2C until depleted, rest for one hour, and finally charge at 0.1C for 16 hours.
• This mode can help revive batteries that cannot be rescued by the Refresh & Analyze mode.
• This mode takes 39-45 hours to complete.

Starting Activate Mode:

1. Insert battery.
2. When "CHARGE" flashes, press "Down" [down-arrow] or "Up" [up-arrow] to select Activate mode (BREAK-IN), then press "ENTER" [enter-key] to confirm.
3. "SET BATT CAPACITY" prompts for battery capacity to automatically calculate charge and discharge currents. Press "Down" [down-arrow] or "Up" [up-arrow] to set the battery capacity, then press "ENTER" [enter-key] to confirm and start the Activate mode.

Note: To synchronize this setting to all channels, long-press the "ENTER" [enter-key] button for two seconds.

4. During program operation, the red LED is constantly lit.
5. Program complete, the green LED is constantly lit.

LED Indicator Status

Battery Rescue

If battery performance remains poor after using the modes recommended in this manual, follow these steps:

1. Use the Activate mode one to three times.
2. If capacity is still low, use the Activate (Break-In) mode.
3. If the second step of Activate mode improves capacity by 10%, repeat the Activate mode one to three times. If there is no significant improvement, and the actual battery capacity is less than 60% of the rated capacity, the battery may need replacement.

Interface Information and Icon Display

When the charger is operating, you can view current, capacity, battery internal resistance, battery voltage, and charging time.

• Charge/Discharge Current: Displays the current value in "mA". Note: Due to pulsing, this value may fluctuate slightly around the set current.
• Capacity: Displays the cumulative charge and discharge capacity in "mAh".
• Charging Time: Displays the time for charging, discharging, and resting.
• Battery Voltage: Displays the battery voltage in "V". If measured with a multimeter during charging, the value may differ from the charger's display because a multimeter cannot accurately measure battery voltage during charging and discharging.
• Battery Internal Resistance: Displays the battery internal resistance in "mΩ".
• Overheat Icon: If the internal temperature of the charger exceeds 80°C, an overheat icon [heat-icon] will be displayed, indicating excessive temperature. Stop operation and wait for the charger to cool down before using it again.
• Bluetooth Icon: When the mobile app is connected to the charger, a Bluetooth icon [bluetooth-icon] will be displayed, indicating a successful connection.

Mobile APP Operation Guide

This charger can connect to the SkyCharger app via an optional Bluetooth module (SK-600135) to view charging curves and update firmware.

* The Bluetooth module (SK-600135) is sold separately.

The Bluetooth module can only interact with the SkyCharger app. Do not connect via "Phone > Settings > Bluetooth" to pair the module!

The correct connection method is: Turn on your phone's Bluetooth, launch the SkyCharger app, and search for and connect to the Bluetooth module within the app.

Using the App:

1. Before connecting the power adapter, ensure there are no batteries in the charger slots. Connect the adapter's DC plug to the charger, then plug the adapter into the wall socket.
2. Insert AA or AAA batteries.
3. Setup and start charging.
4. Scan the QR codes below to download the SkyCharger app.

Diagram: QR code for Google Play Store.

Diagram: QR code for Apple App Store.

Diagram: App interface showing "SkyCharger".

Diagram: Selecting the discovered device.

Diagram: Viewing charging information.

Diagram: Clicking "details" to view charging curves.

Diagram: Clicking battery icon to switch channels.

Diagram: Curves can be zoomed in/out.

Diagram: Clicking "Back" to return to "details".

Diagram: Clicking "Version" to check for firmware updates. If available, click "Ok" to upgrade.

Disclaimer

The design of this charger is intended solely for the battery types listed in this manual. SKYRC assumes no responsibility if the charger is used for purposes other than those specified. We cannot confirm whether you have read the operating instructions carefully before use, nor can we control how you use or store the product.

For the reasons above, we disclaim any liability for damage or loss resulting from improper use or operation. Within the scope of legal regulations, for direct or indirect losses caused by our product, our company's compensation will be based on the invoice amount for the product purchased.

Warranty and Service

SKYRC Technology (Shenzhen) Co., Ltd. provides a one-year warranty service from the date of purchase. The warranty period starts from the date on the invoice/receipt. Under normal usage conditions, for defects or damage not caused by human factors, purchasers can contact the dealer or our after-sales department with the invoice/receipt and the damaged product for repair. Contact number: 0755-83860222.

The following situations are not covered by the free warranty:

• Malfunctions caused by failure to operate according to the manual.
• Malfunctions caused by dropping, collision, or other human factors.
• Malfunctions caused by self-disassembly or repair.
• Malfunctions caused by accidents, misuse, abuse, or intentional damage.
• Damage caused by commercial use, such as discoloration or scratches.

For products exceeding the warranty period or not covered by free warranty, our after-sales department will still provide service.

• We can provide maintenance for products sold by our company outside the warranty period.
• We reserve the right to upgrade products without prior notice.