Mkove Electronics MK75 Manual de usuario
Mkove MK75 Battery Monitor – Instruction Manual
MK75 Instruction Manual
version 0.9 - preliminary
Welcome
The Mkove Battery Monitor is a precision instrument which will allow you to monitor the state of
any low or medium voltage Lithium or Lead Acid battery system.
With reliable information you will be able to accurately assess your energy systems performance
and take care of your battery system.
The battery monitor will show you;
• The state of charge of your battery system.
• Accurate measurements of the current flowing into and out of the system as well as the current
battery voltage.
• Historical data about the utilisation and performance of the system.
This battery monitor uses a number of techniques to provide accurate information about your
system.
Mkove Electronics Page 1
Mkove MK75 Battery Monitor – Instruction Manual
Notes on Safety
• Please read all instructions before using this battery monitor.
• The battery monitor is designed for indoor use only. Do not expose to sources of heat, water or
any other liquid. Avoid undue exposure to corrosive or salty environments.
• Do not open or disassemble the product.
• Ensure that all wiring connections are solid and secure. Do not use in systems where there is loose
wiring or wiring malfunctions such as exposed, corroded or burnt wiring.
• Lead acid and Lithium battery systems are sources of high energy electric current. Take every
precaution to ensure that the battery terminals are not connected together, such as via tools used
during installation, personal jewellery or by incorrect connections. If in doubt use a professional
installer to install the system.
• Clean only with a soft dry cloth. Do not use solvents, abrasive cleaners or water.
Mkove Electronics Page 2
Mkove MK75 Battery Monitor – Instruction Manual
Package Contents
Your Mkove MK75 Battery Monitor package includes the following contents.
•Main Battery Monitor unit
•Two Mounting Clips for panel mounting the unit
•A 150 Amp 50 Millivolt shunt
Mkove Electronics Page 3
Mkove MK75 Battery Monitor – Instruction Manual
Important Notes on Installation
• The shunt should be installed into either the positive or negative main battery cable. The shunt
carries all of the current flowing into or out of the battery - it is important that all connections and
cables are appropriately sized for the loads expected.
• To install the shunt cut either of the main battery cables and then install suitable lugs to attach the
cable to the larger connectors on the shunt.
• For the battery monitor to work as designed it must be able to measure all current flowing into or
out of the battery. It is important that any loads or charge sources are connected to the shunt and not
directly to the battery so that the shunt can measure all of the current flowing into or out of the
system.
• The battery monitor is aware of and includes calculations of it’s own current use. It should be the
only item connected directly to the battery. This allows the battery monitor to show a zero reading
when there are no other currents flowing into or out of the system.
• Aside from the heavy duty cables required to connect the shunt into the batteries main supply
cables, all other wires carry only very small, even minuscule, currents and can be as small as
required.
• If the battery monitor is not installed correctly the data that it shows will be inaccurate or
unusable.
Mkove Electronics Page 4
Mkove MK75 Battery Monitor – Instruction Manual
Installing the Battery Monitor
Disconnect the battery or battery bank from the system before installing the battery monitor.
Install the shunt into the battery system. The shunt can be installed into either the main positive or
negative (ground) cables connecting the battery. This is normally done by cutting the main battery
cable and then connecting each of the cut ends with cable lugs to the larger screw connectors on the
shunt.
On the Battery Monitor there are four connections which have to be made. All of these connections
can be made with thin wire, if desired, as none of these connections carry any significant current.
The overall length of the connections between the battery or battery bank to the battery monitor can
be quite long. We have tested lengths up to 50 meters without any loss of accuracy in the system
The four connections and the way to wire them is as follows;
•BATT+ This should be connected to the positive terminal of the battery or battery bank. Ideally
this will be connected directly to the main terminal of the battery as this will cause the least
voltage drop when large currents are flowing into or out of the battery, and provide the most
accurate readings. If this is not possible choose a connection point which has a sturdy connection
as close as possible to the battery.
•GND This should be connected to the ground or negative terminal of the battery or battery bank.
Like the BATT+ connection this should if possible be connected directly to the batteries main
terminal or to a sturdy connection point nearby.
•SENS- This should be connected to the more negative of the two small screw terminals on the
shunt. The more negative end of the shunt is the end which is connected more closely to the
negative battery terminal. For example if the shunt is installed in the negative battery cable this
will be the end connected directly to the battery. If the SENS- and SENS+ plus wires are
connected in reverse the system will read current into or out of the battery in the incorrect
direction.
•SENS+ This should be connected to the more positive of the two small screw terminals on the
shunt. The more positive end of the shunt is the end which is connected more closely to the
positive battery terminal. For example if the shunt is installed in the negative battery cable this
will the other end of the shunt from the cable which is connected directly to the battery. If the
SENS- and SENS+ plus wires are connected in reverse the system will read current into or out of
the battery in the incorrect direction.
If everything is correct reconnect the main battery or battery bank and ensure that the system is
operating correctly.
Mkove Electronics Page 5
Mkove MK75 Battery Monitor – Instruction Manual
Panel Mounting of the Battery Monitor
The MK75 is designed for panel mounting. Included with the package are two clips which allow
for easy installation and removal of the battery monitor. These slide into the rear of the battery
monitor on either side and a series of ratchet points allow for making a firm connection against the
back of the panel. The design of the clips will support up to a 7mm panel thickness.
The size of the square hole which needs to be made in the panel is at least 78mm x 56mm. These
dimensions can be up to 6mm larger in either direction due to the flange around the battery monitor.
Mkove Electronics Page 6
Mkove MK75 Battery Monitor – Instruction Manual
Initial Use of the Device
When the unit is first supplied with power it will take second or two to boot before it displays
anything on the screen.
Battery Settings
For the battery monitor to work correctly with your battery it is important to specify the correct
battery specifications including battery type, battery capacity and the number of battery calls or
voltage.
The battery capacity is usually the sticker capacity or manufacturers specification of the battery. It
is important to set the battery capacity correctly and not confuse this with CCA or any other
specification.
To set the battery settings;
•Press Menu then choose Settings then Battery Settings.
The number of cells can either be set specifically or set to auto where the battery monitor will try to
set the correct cell count based on voltage. The auto cell count is set either when the battery
monitor starts or when the battery settings are changed. As the possible cell voltages in some cases
overlap it is possible that the auto cell setting will be incorrect if the battery is in a low state of
charge.
Initial State of Charge
When first powered on the battery monitor will set an estimated state of charge based on the
batteries voltage. This however will only be close to accurate if the battery has been in a resting
state for some time.
The state of charge will be more accurate after the battery monitor has seen the battery go to a full
charge and indicates “FULL” on it’s display.
Zero Amps
Your system should show 0.00 amps when there is nothing connected to it. If required the amps can
be zeroed by choosing Settings then Zero Amps.
Mkove Electronics Page 7
Mkove MK75 Battery Monitor – Instruction Manual
Network Connection and Over the Air Updates
Wifi Connection Types
The battery monitor can connect via wifi. It can either act as an Access Point (where you can
connect to it using a device), or it can act as a Wifi Station (where the battery monitor connects to
an existing network).
When connected to the battery monitor when it is an access point, the wider internet is not available
and so it will not be able to update it’s firmware via an Over The Air update, however you can still
visit the battery monitors web site which will give data about the battery and state of charge.
When the battery monitor is connected to an existing network as a wifi station, generally there there
will be wider internet available. You can still view the battery monitors web site and see battery
information, and the battery monitor will be able to update it’s firmware via and Over The Air
update.
Viewing Battery Data from the Battery Monitors Web Site
When the battery monitor is connected either in Access Point or Wifi Station modes the battery
monitors internal web site will be available. In either case the battery monitor will show it’s
network address (IP address) on it’s screen in either of these modes. Typing this address into a web
browser will show the batteries internal web site and display various battery information.
In some cases, depending on network configuration, you can also use the web site address
“MK75.lan” instead of using it’s IP numbers.
Over The Air Updates
The battery monitor can download firmware updates from the internet which can include newer and
improved features for the battery monitor.
Performing an Over The Air update on a new battery monitor is a two step process. You first have
to connect to the battery monitor and tell it the address, known as SSID and password of a wifi
network that it can connect to. When this is set the battery monitor will restart and attempt to
connect to the specified network. If it is able to connect, and the network has wider internet access
then it will be able to perform and Over The Air update. If it is unable to connect then it will go
back into access point mode and can be connected to once again.
Mkove Electronics Page 8
Mkove MK75 Battery Monitor – Instruction Manual
The steps for performing an Over The Air update are as follows..
•Go to Settings and choose Network, which is on page 2 of the three Settings pages.
•In Network press either the left or right arrow keys to turn the network on. It will indicate which
mode it is in, normally Access Point mode if the network settings have not already been set. In
Access Point mode it will display the SSID and password required to connect to the battery
monitor. It will also display it’s network address.
•On a device, such as a computer, tablet or phone, go the the wifi settings and connect to the
battery monitor via wifi.
•On the same device open a web browser and go to the address shown on the battery monitors
screen, usually 192.168.4.1. This will show the web site from the battery monitor.
•On the web site there is a button called Wifi Settings, select this and enter the network address
(SSID) and password for a nearby wifi network with internet acesss.
•The battery monitor will restart and connect to the wifi network.
•If the battery monitor was able to connect to the wifi network, go to Settings and choose Ota
Update. The battery monitor will look for the update server and will either say “Unable to
connect to update server” if the server could not be found, “There is no newer version of the
firmware” if the version of the firmware that you have is already the latest version or “A newer
version is available” if there is a newer version. If there is a newer version available press the
OK/Menu button to upgrade to it. Note that it can take some time for the new firmware to
download. Once installed the battery monitor will restart.
•Note that you can always check the version of the firmware that you have installed by going to
the menu and choosing About. We will also publish the current version of the firmware on our
web site at www.mkove.com
Mkove Electronics Page 9
Tabla de contenidos
