JUNCTEK KG140F DC 0-120V 400A Wireless Battery Monitor & Coulomb Meter

Specifications

• Brand: JUNCTEK

• Model: KG140F

• Voltage Range: 0-120V DC

• Current Range: 0-400A

• Display Measurements: Voltage, Current, Temperature, Power, Watt-hour, Ampere-hour, Remaining capacity, Endurance time, Charging time

• Shunt Material: Pure Copper

• Connectivity: RS-485 (Module to Display), Bluetooth (App)

Downloads:

• KG140F Battery Monitor_User Manual

Key Applications and Projects

• Off-Grid Solar Cabins: Monitoring massive 48V battery banks to ensure the solar panels are adequately replacing the power drawn by inverters.

• RV & Van Builds: Keeping a strict eye on 12V LiFePO4 house batteries to prevent over-discharging during boondocking trips.

• Marine Power Systems: Tracking the endurance time and remaining capacity of trolling motor batteries on the water.

Unlock New Capabilities (Project Evolution) The Smart Automated Power Shed: Take advantage of the Voltage/Current Measuring Module's "Output Control" port! By configuring the Low Voltage Protection (LVP) and Over Voltage Protection (OVP) thresholds in the mobile app, you can wire the OUT and VEXT pins to an external heavy-duty relay. When your battery bank gets dangerously low, the module can automatically trigger the relay to disconnect non-essential loads (like a heater or water pump), ensuring your vital communication and lighting systems stay powered until the sun comes back up!

PACKAGE INCLUDED

• 1x JUNCTEK KG140F Main Display Screen

• 1x Voltage/Current Measuring Module

• 1x 400A Pure Copper Shunt

• 1x Temperature Sensor Cable

• 1x RJ45 RS-485 Data Cable

• 2x Multi-pin Wiring Harnesses

• 1x 3-Pin Pluggable Terminal Block

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What is the maximum voltage the KG140F can measure? The monitor can safely measure DC voltage up to 120V.

2. What is the maximum continuous current rating? The included shunt is rated for up to 400A.

3. What brand makes this battery monitor? This monitor is manufactured by JUNCTEK.

4. What material is the shunt made of? The shunt is constructed from pure copper for excellent conductivity and accurate measurements.

5. Does it have a wireless connection? Yes, it features a Bluetooth connection allowing for wireless mobile app control.

6. Can it measure ambient or battery temperature? Yes, the kit includes a temperature sensor that connects to the TSNS port on the measuring module.

7. What specific data does the main screen display? The screen displays Voltage, Current, Power, Watt-hour, Ampere-hour remaining, Temperature, and a battery percentage icon.

8. What is the purpose of the separate measuring module? The measuring module acts as the brain, interfacing directly with the shunt, temperature sensor, and power source, and then sends that data to the display via an RS-485 link.

9. How does the display connect to the measuring module? They connect using the included RJ45 data cable, which plugs into the back of the display and the "RS-485 Display" port on the module.

10. Can I view historical data or trends? Yes, the mobile app features a unique curve function that graphs voltage and current history in real-time.

11. Does the system have programmable alarms or protections? Yes, through the app you can set thresholds for Over Voltage (OVP), Low Voltage (LVP), Over Current (OCP), Over Temperature (OTP), and Over Power (OPP).

12. Why are the bolts on the shunt colored like that? The bolts, washers, and nuts are all made of copper to ensure the lowest possible resistance across the entire high-current connection.

13. Can the app estimate how much time I have left on my battery? Yes, the app calculates and displays both the endurance time (discharging) and the charging time based on current loads.

14. What are the mechanical buttons on the display used for? The SET, Up, Down, and OK buttons allow you to navigate menus and change settings directly on the physical V/A-Meter if you do not want to use the app.

15. Can the display be panel-mounted into a dashboard? Yes, the back of the display housing features clips/tabs designed to lock into a rectangular cutout on a panel.

16. Does the 400A shunt heat up under heavy load? Because it is made of pure copper, it features low heating characteristics even at high current draws.

17. What is the QR code on the measuring module for? The QR code typically provides a quick link to download the manufacturer's mobile app or access the digital instruction manual.

18. What does the "Output Control" section on the module do? The OUT, GND, and VEXT pins can be used to send a control signal to an external relay to disconnect loads if a protection threshold (like low voltage) is breached.

19. Will leaving this monitor on drain my battery? No, the system is designed to have low power consumption and will not consume too much battery power in standby mode.

20. Can I use this monitor for a 48V or 72V system? Absolutely. Because the monitor's range is 0-120V, it effortlessly handles 12V, 24V, 48V, 72V, and 96V battery banks.