JUNCTEK KL-F Series Battery Monitor User Manual

1. Introduction

The JUNCTEK KL-F series DC voltage and current meter/battery coulomb meter is a high-precision instrument designed to measure various parameters of your battery system. It can accurately detect voltage, current, power, charge and discharge capacity, watt-hours, time, and temperature. This device also offers advanced protection functions such as over-voltage, under-voltage, over-current, over-power, and over-temperature protection, which can be configured via the mobile application.

The meter automatically identifies the direction of current (charging or discharging) and monitors battery capacity in real-time. Through its Bluetooth connectivity, you can view measured data, control the meter, and perform firmware upgrades using a dedicated mobile application.

Key Features:

• Accurate measurement of voltage, current, power, capacity, watt-hours, temperature, and time.
• Automatic recognition of charging and discharging directions (green for charging, blue for discharging).
• Suitable for various battery types (ternary lithium, lead-acid, lithium phosphate) within the voltage measurement range.
• Pure copper shunt and screws for good electrical conductivity, low heat generation, and low power consumption.
• Bluetooth connectivity for mobile app control, data viewing, and settings configuration.
• Configurable protection functions: over-voltage (OVP), under-voltage (LVP), over-current (OCP/NCP), over-power (OPP), and over-temperature (OTP) (requires external relay, not included).
• Self-calibration function for long-term accuracy.
• Ability to clear Amp-hour, watt-hour, and time data without affecting subsequent measurements.
• Online firmware upgrade capability via the mobile app.

2. Technical Specifications

The following table details the technical parameters for the KL-F series battery monitors:

Note: The KL610F model is also mentioned in some specifications with a 0-600V voltage range and 0-100A current range, but the primary models are KL110F, KL140F, and KL160F.

3. Package Contents

Please inspect the package contents upon receipt. If any items are damaged or missing, contact your supplier immediately.

• Battery Monitor (KL-F series measuring module) x 1
• Sampler (Shunt) x 1
• 4P Connection Cable x 1
• Temperature Sensor x 1
• 3P Terminal x 1
• 3P Connection Cable x 1
• Screws x 4
• Spacers x 4
• Quick Guide x 1

4. Setup and Installation

4.1. Component Identification

Familiarize yourself with the main components of the battery monitor module and the sampler.

Measurement Module Interfaces:

1. Indicator light: Used to check the output status.
2. 2-wire, 3-wire power supply selector switch: Toggle switch to select between external power supply (3W) or self-powered (2W).
3. Power supply interface: Includes battery positive (VSNS), external power supply positive (VEXT), and external power supply negative (GND).
4. 485 communication connection interface: For supervisor computer connection or multi-meter communication. Internal order: B, A, GND, NC.
5. Display reserved interface: For connecting an optional display module. Internal order: B, A, GND, +5V.
6. Relay output control interface: For use with relays. Internal order: GND, OUT, VEXT.
7. Sampler interface: Connects to the shunt for current detection. Internal order: VCC, GND, ISNS+, ISNS-.
8. External temperature measurement interface: Connects to the temperature sensor. Internal order: TSNS, GND.

Sampler (Shunt) Interfaces:

1. Battery negative terminal: Connects the negative terminal of the battery to the screw marked GND or BATT-.
2. Sampler interface: Connects to the sampler interface of the measurement module for current measurement.

4.2. Wiring Methods

Proper wiring is crucial for accurate measurement and safe operation. Ensure all connections are secure and observe polarity.

For a visual guide, you can refer to the wiring instructions video: http://68.168.132.244/KL-F_jxfs_EN.mp4

4.2.1. Self-Powered Wiring Method

This method is suitable if the battery voltage is within 10-120V. Set the power selection switch to "2W".

• Connect the positive terminal of the battery to the VSNS power interface. Use 13-16AWG wire.
• Connect the negative terminal of the battery to the screw marked BATT- on the shunt.
• Connect the negative pole of the charger and the negative pole of the load to the other screw of the shunt.
• Ensure positive and negative poles are not reversed.

4.2.2. External Power Supply Wiring Method (Relay Control)

This method is used when an external power supply (0-120V) is used to power the monitor, or when relay control is desired. Set the power selection switch to "3W".

• Connect the positive pole of the external power supply to the VEXT power interface.
• Connect the negative pole of the external power supply to the GND power interface.
• Connect the positive pole of the battery to the VSNS measurement interface.
• For relay control, connect the relay's control ports to the OUT and VEXT terminals of the measurement module's Output Control. The relay's working power should match the external power supply.
• Connect the negative terminal of the battery to the screw marked BATT- on the shunt.
• Connect the negative pole of the charger and the negative pole of the load to the other screw of the shunt.
• Ensure all connections are firm and polarity is correct.

4.3. Physical Dimensions

The following diagrams provide the dimensions for the KL110F battery monitor and its shunt for installation planning.

5. Operating Instructions

5.1. Mobile App Control

The KL-F series battery monitor is primarily controlled and monitored via a mobile application. Ensure your mobile phone's location services and Bluetooth are enabled.

App Download and Installation:

• Android App: Download from Google Play or directly from http://68.168.132.244/app/KL/KL.apk.
• iOS App: Search for "KL series" in the Apple App Store.
• The app requires Android 5.0+ or iOS 9.0+ and location services enabled.

App Connection Steps:

1. Open your mobile phone's location services.
2. Enable Bluetooth on your mobile phone.
3. Open the KL-F series mobile application.
4. On the app's homepage, click the "Search" button (usually in the upper right corner).
5. Select the device with "BTGxxx" to automatically connect. No pairing password is required.

5.2. App Interface Overview

The app interface provides various sections for monitoring and configuration:

• Main Interface: Displays real-time voltage, current, power, remaining capacity, electricity consumption, temperature, battery life, and elapsed AH value.
• Settings: Access protection functions, relay mode, low capacity alarm, and other advanced configurations.
• About Us: Provides app version information and links to the official website.

5.3. Protection Functions

The KL-F series offers comprehensive protection features. These functions require an external relay (not included) to physically disconnect the circuit when a protection threshold is met. If no relay is installed, set protection parameters to 0 to disable them.

To access protection settings, navigate to the "Settings" section in the app and click on "Protection function".

• Over Voltage Protection (OVP): Set a maximum voltage. If exceeded, OVP is triggered.
• Under Voltage Protection (LVP): Set a minimum voltage. If dropped below, LVP is triggered.
• Discharge Overcurrent Protection (OCP): Set a maximum discharge current. If exceeded, OCP is triggered.
• Over Temperature Protection (OTP): Set a maximum temperature. If exceeded, OTP is triggered.
• Charging Overcurrent Protection (NCP): Set a maximum charging current. If exceeded, NCP is triggered.
• Over Power Protection (OPP): Set a maximum power. If exceeded, OPP is triggered.
• Low Temperature Protection (LTP): Set a minimum temperature. If dropped below, LTP is triggered.
• Protection Recovery Time: Configures the delay before the system recovers from a protection event.
• Delay Time Setting: Configures a delay for protection activation.
• Relay Mode: Select normally open or normally closed relay type.
• Low Capacity Reminder: Set a percentage threshold for low battery alarm.

Each protection function can be configured by tapping on its respective setting in the app and entering the desired value. Remember to click "OK" to save changes.

5.4. Firmware Upgrade

The device firmware can be updated via the mobile app to gain new features or improvements. It is crucial to follow the steps carefully to avoid product failure.

For detailed instructions, refer to the firmware update log PDF: https://manuals.plus/m/edf3d491cea2a71a436e0abdbcf617b3d7a22cdf6838b8fc8f2ca866e89f1aca

Firmware Update Process:

1. Update Mobile App: Ensure your mobile app is the latest version. Uninstall any old versions first.
2. Access Firmware Upgrade: In the app, go to "Settings" -> "After-sales Service" and enter code 8610.
3. Initiate Upgrade: Select "Firmware Upgrade" and enter firmware code 000.
4. Power Cycle (for older models): If your device was ordered before January 1, 2022, power off the product, short-circuit the temperature measurement interface, then power on the product before clicking firmware upgrade.
5. Wait for Completion: The indicator light on the measurement module will flash rapidly. Wait patiently for the "Upgrade Successful" message before exiting the app.
6. Reconnect: Exit and reopen the mobile app, then reconnect to the device.

6. Maintenance and Safety

Adhering to safety guidelines and proper maintenance practices will ensure the longevity and safe operation of your JUNCTEK Battery Monitor.

6.1. General Safety Summary

• Observe All Terminal Ratings: To avoid fire or shock hazards, always adhere to the specified voltage and current ratings for all terminals.
• Use Proper Over-voltage Protection: Ensure no excessive over-voltage (e.g., lightning strikes) reaches the product to prevent electric shock.
• Do Not Operate Without Covers: Never operate the meter with covers or panels removed.
• Do Not Insert Anything Into the Air Outlet: Avoid inserting objects into the air outlet to prevent damage.
• Avoid Circuit or Wire Exposure: Do not touch exposed junctions or components when the unit is powered on.
• Do Not Operate With Suspected Failures: If you suspect any damage, have it inspected by JUNCTEK authorized personnel before further use. Do not attempt unauthorized repairs.
• Provide Adequate Ventilation: Ensure the meter is well-ventilated to prevent overheating. Regularly inspect the air outlet and fan.
• Do Not Operate in Wet Conditions: Avoid operating the meter in humid environments to prevent short circuits or electric shock.
• Do Not Operate in an Explosive Atmosphere: Never operate the meter in an explosive atmosphere.
• Keep Meter Surfaces Clean and Dry: Maintain clean and dry surfaces to prevent dust or moisture from affecting performance.
• Prevent Electrostatic Impact: Operate in an electrostatic discharge protective environment. Ground conductors to release static before making connections.
• Handle with Caution: Handle the device carefully during transportation to avoid damage to components.

6.2. Important Notices

• Do not exceed the voltage and current range of the meter; otherwise, it will be damaged.
• Ensure correct polarity; positive and negative poles cannot be reversed.
• The meter's shell is fragile; avoid impacts or exposure to chemicals.
• Store the meter in a dry environment at -25~50℃.
• Do not attempt to disassemble the meter, as this will void the warranty. Repairs must be performed by authorized personnel.
• Avoid violent movement of the meter to prevent internal circuit damage. Contact the supplier if the meter malfunctions.

7. Troubleshooting

If you encounter issues with your KL-F series battery monitor, try the following steps. If the problem persists, contact JUNCTEK support.

7.1. Mobile App Cannot Connect to Bluetooth / No Display After Power On

1. Check whether the power supply and measurement module are well connected.
2. After performing the above inspection, restart the instrument.
3. If the product still cannot be used normally, please contact JUNCTEK support.

8. Warranty and Support

JUNCTEK products are covered by P.R.C. patents. This document replaces all previously published documentation.

For further information, including detailed user manuals and operation videos, please visit the JUNCTEK official website.

Contact Us:

• E-mail: junce@junteks.com
• Website: www.junteks.com

If you have any problems or requirements regarding our products or this manual, please contact JUNCTEK directly.

9. Product Videos