Freedom Won LiTE Home 10/8 User manual

Installation Manual
Freedom Lite Home and
Business
Range of Lithium Iron Phosphate Battery Modules
Manufactured By Freedom Won (Pty) Ltd
Kimbult Industrial Park, Unit C3 & C4
9 Zeiss Road
Laser Park, Honeydew
2040
South Africa
www.freedomwon.co.za
Technical and Installation Assistance – Contact:
Please contact your Freedom Won Distributor or Reseller Installer for technical and installation
support. A directory of Distributors and Reseller Installers is available at www.freedomwon.co.za.
For advanced support please contact [e-mail].
Update Record:
Revision
Number
Update Summary
Updated By
Date of Issue
12
Incorporated new model names and warranty
to reflect guaranteed performance at 80%
average DoD
Antony English
28 April 2020
13
Updated dimensions and weights of 5/4, 10/8,
15/12 and 20/16 models to new design.
Antony English
13 August 2020

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1. Introduction
This manual is intended to aid an installer with the installation and commissioning of the
range of Freedom Lite lithium iron phosphate (LiFePO4) energy storage modules. This
document is not intended to provide detailed information of the inner workings of Freedom
Lite that is not relevant to a person that is performing the installation and final
commissioning. Supplementary information relating to programming of the built-in battery
management system for specific applications is available to approved integrators directly
from Freedom Won.
This manual does not attempt to cover all the details pertaining to the setup of third-party
equipment in relation to the interface and necessary functionality to work with the Lite.
Freedom Won however is available at the contact details on page one to provide direct
support where necessary for supported inverter brands.
2. Product Description
The Freedom Lite technology is available in various standard sizes to meet all residential,
commercial and industrial applications, ranging in models from 5kWh up to 2500kWh.
Larger systems are provided by Freedom Won based on specific project requirements by
installing multiple units of the same model battery in parallel.
Freedom Won offers the following ranges in the LiFePO4 technology:
1. Lite 12V
2. Lite Home and Business
3. Lite HV Home and Business
4. Lite Marine
5. Lite Mobility (golf carts, forklifts etc)
6. Lite Commercial (including Lite Commercial HV and HV+)
7. Lite Industrial
This manual covers the standard voltage models of the Lite Home and Business range from
5kWh up to 80kWh. Please refer to the manuals specific to the other ranges.
The standard Lite voltage is 52V nominal (to suit 48V systems). The Freedom Lite HV range is
designed for specific Higher Voltage inverters such as those from Ingeteam (Ingecon 1Play
3TL and 6TL). The Lite Commercial range varies from 52V to 800V depending on customer
requirements (including the HV and HV+ models). The Industrial range varies from
approximately 500V to 800V depending on customer requirements.
The Lite Marine range of lithium batteries is available on request with similar specifications
to the Home range including 13V and 26V options to suit 12V and 24V systems respectively.
These models are water resistant (IP65) and designed for mounting on the floor or
horizontal deck and have dimensions that are different to the Lite Home models. For more
information on these models please contact Freedom Won.

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Table 2.1 provides an overview of the 52V Freedom Lite Home and Business range. There
are eight Freedom Lite models in the Home and Business range, as included in the table,
classified in terms of energy capacity.
An image with numbered labels pertaining to the following paragraphs is provided in Figure
2.1. The model number denotes with the first number [1] the total energy storage capacity
in kWh of each model. The second number [2] denotes the average amount of energy in
kWh that should be withdrawn per cycle (on average) in order to optimise the life of the
lithium cells. This equates to 80% of the total for each model i.e. 80% depth of discharge
(DoD). Note that all Freedom Lite batteries offer a maximum of 90% DoD as standard.
The range is very compact with the “Home” models up to the Lite Home 20/16 intended to
be wall mounted (floor mounting is also possible – all models are supplied standard with
plastic feet). The larger “Business” range is designed for floor standing with aluminium feet
with plastic pads on the underside.
The Ah capacity is also provided in the tables for each model for easy reference.
The maximum current for each model is governed by the rating of the built-in circuit breaker
[3], which has been sized below the maximum current capability of the lithium cells. There is
no noticeable cell temperature rise during operation and no active cooling of the cells is
required. The time limit for operation at the maximum current is 30 seconds in a 40 second
cycle. To ensure that the circuit breaker does not trip in normal operation it is advised that
the design of the system aims to remain at or below the continuous current value.
For the 52V models the absolute maximum allowable voltage when fully charged is 56V,
however a more typical inverter charge setting range is 55.5V to 55.8V, depending on the
inverter voltage tracking accuracy. The voltage normally used as the minimum cut off is 48V,
however this will not typically be reached when operating down to 90% Depth of Discharge
(DoD). The BMS will command the connected inverter with CAN Bus interface to stop
discharging the battery at 10% SoC (90% DoD), which roughly equates to 49,0V). Under high
load the voltage may drop to 48V whilst still above 10% SoC. A voltage of 48V or even lower
can be observed in systems without a CAN Bus interface or where the standby current draw
on the inverter has caused the battery to be discharged below 10% SoC. The battery breaker
will eventually trip the battery at around 47V to protect the cells from undervoltage.

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Figure 2.1 Labelled Image of the Freedom Lite Home 15/12 (Labelling corresponds with the
text)
1. Gross Capacity
2. 80% Capacity recommended for daily cycling (max available is 90%)
3. Breaker
4. Power Cables
[2]
[1]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[12]
[11]
[14]
[13]
[15]

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5. Location of DB15 Analogue and Relay Control Port on older models (note that from 9
September 2019 this port is no longer provided owing to migration of all interfacing
to CAN Bus)
6. CAN Bus Sockets x 2 (RJ45) (one socket must contain a termination resistor if end of
line)
7. USB Programming Port (not visible in photo). Note that in models manufactured prior
to May 2020 this port is a DB9 plug.
8. Reset Button (not visible in photo)
9. State of Charge Display
10. Error Lite
11. On Button
12. Off Button
13. Lifting Eye Bolt Hard Point (not visible in photo)
14. Safety Retaining Tab for Floor Mount Option (not visible in photo)
15. Feet
The weight of each model is given in the tables. The Freedom Lite Home 5/4, 10/8 and
15/12 models can be manually lifted by two people onto its hanging points. The larger units
may require lifting equipment of varying degrees for handling and installation as explained
later in this document.
The dimensions given are for the principle outlines of the aluminium housing and exclude
items that protrude such as the DC cable glands and the circuit breaker handle.
The DC cables exit the unit through glands located on the top right-hand side of the casing
and vary in number according to the model [2 in Figure 2.1]. The correct cable lugs for
connecting these leads to the inverter must be in hand when doing an installation. If there
are several inverters and charge controllers that need to be connected to the battery it is
advisable to install a DC connector box to use as a junction point from which to branch out
to all the battery connected equipment.

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Table 2.1 Freedom Lite Range Overview
Freedom Lite Home
5/4
Home
10/8
Home
15/12
Home
20/16
Home
30/24
Business
40/32
Business
60/48
Business
80/64
Total Energy Capacity
[kWh] 5 10 15 20 30 40 60 80
Energy, 80% DoD [kWh]
(1) 4 8 12 16 24 32 48 64
Energy, 90% DoD [kWh] 4,5 9 13,5 18 27 36 54 72
Current Capacity [Ah] 100 200 300 400 600 800 1200 1600
Max & Cont. Charge
Current [A] (2) 100 200 300 400 600 600 800 800
Max & Cont. Charge
Power [kW] (2) 5 10 15 20 30 30 40 40
Max/Cont. Discharge
Current [A] (2) 200/100 300/200 480/300 480/400 750/600 750/600 1000/800 1000/800
Max/Cont. Discharge
Power [kW] (2) 10/6 15/10 24/15 24/20 38/30 38/30 50/40 50/40
Max Recommended
Inverter Total Rated
Power (cont.) [kVA]
8 10 15 15 25 25 35 35
Nominal Voltage [V] 52V, to suit 48V Inverters, min 47V, max 56V
Weight [kg] 49 89 130 173 310 412 613 811
Dimensions on or against
wall - Height x Width x
Depth [mm]
500x
340x290
745x
340x290
745x
490x290
745x
640x290
1540x
455x370
1895x
584x310
1895x
859x310
1895x
1142x310
Enclosure Aluminium – powder coated white front, rated for indoor use
DC Connection -
Integrated Cables, [no.
per electrode] (3)
1x 50mm2 1 x 50mm2 2 x 50mm2 2 x 50mm2 2 x 95mm2 2 x 95mm2 2 x 95mm2 2 x 95mm2
Control Interface RJ45 Socket x 2 – CAN Bus for Interfacing with Compatible Inverters and System Controllers, and communication
for the connection of parallel batteries – note that parallel batteries must all be of the same model.
Protection Shunt Trip Circuit Breaker sized to suit max current, can be tripped by BMS if critical fault, manual reset. Includes
overcurrent, cell under and over voltage, temperature, weak cell detection, minimum SOC control
Human Interface State of Charge Display (0 to 100%), Error light, Error Reset Button, USB Plug for Programming, WiFi remote
monitoring (optional accessory)
Warranty [4] 10 years or 4 000 cycles for average 80% DoD, and max 90% DoD
Service Life [4] >16 years (>5 500 cycles) expected life at 80% DoD (1), >20 years (>7 500 cycles) at 50% DoD
Essential Accessories
Note that for connecting the battery to a PC a USB “printer” cable is required (one is supplied with each battery)
CAN Bus Termination Resistor – one required per battery (one included with battery)
CAN Bus Cable (RJ45 LAN Cable) – one required per battery (not supplied with battery). Note some inverters will
require a special (non-standard pin configuration) cable – see installation manual

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Notes to Table 2.1
1) DoD = Depth of Discharge, recommended 80% DoD for average daily discharge, 70% DoD on average for optimal life –
max for normal operation 90% DoD, max for system in standby 100% DoD.
2) Max load duration – 30 seconds per 40 second cycle. 1.5 x Max overload can be handled for 5 seconds.
3) Fly Leads 1,8m long, power cable Red = Positive, Black = Negative, conductors in table refer to one electrode i.e. per
positive and negative connections
4) End of Life (EoL) defined as cell dropping to 60% of Beginning of Life (BoL) capacity for expected life and 70% of BoL
capacity for warranty. This warranty applies to Lites sold after 1 September 2019. For Lites sold prior please contact
Freedom Won for warranty information.
Two RJ45 sockets [6] are provided, one for connecting the CAN interface from the battery to
the system controller or directly to the inverter depending on the brand, and another for
connecting the battery to another battery or for a termination resistor (more detail later in
manual).
A USB Type B “printer” plug [7 - concealed] is fitted to the upper left-hand side of the
housing for use by technicians for programming the required profile onto the BMS or
updating firmware. The required profile is typically loaded by Freedom Won prior to
delivery but installers are advised to obtain the correct cable to allow Freedom Won or the
distributor to program batteries remotely on behalf of the installer via the installer’s
Windows laptop, if necessary. One cable is provided with each battery.
An error reset button [8 - concealed] is positioned adjacent to the USB plug.
Freedom Lite is also fitted with a State of Charge (SoC) display [9], which includes a red LED
error indicator [10] and below it a “low power” indicator.
Figure 2.2 USB Type B “Printer” Cable for Programming Freedom Lite
The ON button [11] and OFF button [12] are located beside the SoC display.
The Lite Home range can be wall mounted, but if a sturdy wall is not available floor
mounting is an option. The Lite is supplied with a securing tab at the top in the middle as
part of the rear cover to secure the battery against the wall for floor mounted installations
to prevent it from tipping over [13]. Note: this tab must not be used to support the weight
of the Lite, only to ensure it does not topple over when mounted on the floor. This tab is not
suitable for securing the Lite in a moving vehicle where vibration could occur.

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All Lite’s have feet as standard, whether needed or not [15].
A hard point is supplied on the top for the 15/12 and 20/16 models [14] for inserting an eye
bolt that can be used for hoisting the battery onto the wall mountings. The Lite 30/21 and
above are supplied with permanently installed eye bolt(s).
3. DC Bus Design Notes
The Lite range includes an integrated battery DC breaker/isolator that breaks the positive
cable continuity inside the battery. This breaker, on all Home and Business models, is rated
for a 36kA fault (short circuit) current. The system therefore does not require another DC
isolator or breaker except where required in relation to conformance with the Clean Energy
Council of Australia battery design Best Practice Guide, which states that, should the
internal battery isolator not offer isolation of BOTH the positive and negative terminals of
the battery, an external isolator is required that can isolate both the positive and negative
cables/terminals of the battery.
The approximate short circuit current values of each battery model are provided in the table
below:
Table 3.1 Short Circuit Current for Lite Home and Business Models
Freedom Lite Home
5/4
Home
10/8
Home
15/12
Home
20/16
Home
30/24
Business
40/32
Business
60/48
Business
80/64
Short Circuit Current [A] 1500 2100 3100 3600 4700 5100 5800 6200
The external isolating device required for installations in Australia should be designed to
withstand these fault levels (short circuit currents).
4. Transport, Handling and Mounting
The Freedom Lite units are packaged in protective layering and fastened into a wooden
crate with pallet type feet, which allow lifting with a forklift or a pallet jack. The Freedom
Lite Home 5/4 and 10/7 models are easily handled by two people. The 15/11 and 20/14
models may be manually handled by four or six people. The 30/21, 40/28, 60/42 and 80/56
models must be handled with care by a forklift or pallet jack of the required lifting capacity
rating.
If it is necessary to transport the larger units (typically 40/28 and larger) up or down
multiple stairs in order to get them to the point of installation in the premises it may be
preferable to deliver the unit with the lithium cell modules separate and then Freedom Won
will fit them into the unit on site. This must be arranged with Freedom Won at the time of
order placement and will attract a nominal fee for labour plus transport and
accommodation where applicable. This service is not available in all countries. Please
enquire with Freedom Won Sales.

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The “Home” series is designed for wall mounting to preserve room and floor space and offer
a convenient obstruction free and aesthetically pleasing solution. Each model is fitted to the
wall using two Rawl Bolts. The Rawl Bolts are inserted into correct diameter predrilled holes
in the wall. The bolts must first be tightened substantially so that the internals of the Rawl
Bolt have gripped tightly into the wall, and then the bolt must be turned out slightly with
the head protruding so that about 5mm of the bolt shank is visible. This pre-tightening
prevents the bolt from being pushed into the wall when mounting the Lite. The Freedom
Lite has two keyhole shaped holes on the back, which are shaped to fit over the bolt heads
and then a narrowed section secures around the bolt shank as the unit is lowered into its
final position. The 5/4, 10/7 and 15/11 models are hung using M8 bolts whilst the 20/14 and
30/21 models are hung on M10 bolts. The centre to centre spacing of these bolts must be
applicable to the model being installed. It is critical that these bolts are mounted within
1mm of the correct dimension and must be perfectly level.
Figure 3.1 Bolt Mounting Keyhole on Rear of Lite Casing – floor mount retaining tab and
fitted eye bolt also visible
Eye bolts fixed to the top of the battery can be used for hoisting the unit up to the required
height for fitting to the wall (excluding 5/4 and 10/8, which can be lifted manually). The eye
bolt(s) on the models up to the Lite 20/14 can be removed after installation. Ensure that you

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have one M12 x 1,75 thread eye bolt rated for 450kg or more for the models that are not
supplied with permanently fixed eye bolts.
Lifting the batteries by the eye bolts should be performed using a mobile gantry crane or a
high lift pallet jack.
Figure 3.2 Eye bolt Example
Figure 3.3 Eye bolt Installation on a Lite 15/12 model (remove after installation)
The units can alternatively be lifted to the right height and onto the hanging bolts using a
high-lift pallet jack such as shown in Figure 3.4. A site assembled gantry with electric winch

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is shown in Figure 3.5. This gantry is available from Freedom Won as an accessory and is
available with various gantry widths.
Figure 3.4 High Lift Pallet Jack
Models up to Lite Home 20/16 are fitted with lifting or manoeuvring handles to make
placement easier. See Fig 4.2.

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Fig 3.5 Site Assembled Gantry with Electric Hoist
Caution:
1. Great care must be taken to ensure that the Rawl Bolt has properly located into the
narrowed section of the mounting hole before removing the support.
2. Handle the Freedom Lite with great care when lifting and manoeuvring. It should
remain either lying flat on its back, on a long side, or vertically upright (it should not
be placed upside down or on its front face. When manoeuvring through a doorway
on its long side be certain to pack spacing foam to prevent damage to the plugs and
glands.
3. Do not allow the pallet jack to over centre if it is a model with forks longer than the
lower arms
4. Take care not to knock any of the protruding items against obstacles during handling
such as the DC cabling and plugs and the circuit breaker handle.
5. Take care not to scratch the Lite during handling. Packaging foam should be used to
protect the paint when being handled on a trolley or pallet jack.
6. Always ensure that lifting equipment and slings are adequately rated for the lifting
weight.
7. Ensure that the eye bolts are fully screwed into the hard point thread on the top of
the unit before lifting.
8. Wear personal protective equipment such as safety shoes and gloves while handling
and mounting the Freedom Lite

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9. Always ensure that you have enough people on hand to perform the operation safely,
i.e. at least one person to guide and stabilise and one person to hoist or handle the
pallet jack or gantry.
10. The gantry can be configured for wall mounting – when using the gantry in this
configuration absolute care must be taken to prevent the gantry from being pulled
over by non-vertical tension on the rope.
Mounting and Environmental Requirements
The Lite Home and Business models are designed strictly for indoor use away from moisture
and direct sunlight.
No specific venting is required since the Lite emits no hazardous gases, however air
circulation may be required to ensure room temperature is maintained at reasonable levels,
preferably below 30˚C (see Lite warranty for information upper temperature limits for hot
environments).
Room heating may be required in cold climates to keep the room above 0˚C, since charging
of the Lite is not permitted below 0˚C. Ambient environments that regularly exceed 40˚C
should employ room cooling if practicable to ensure optimal Lite service life.
Temporary storage or transport of the battery is permitted in the range -20˚C to 45˚C,
however extended storage should be between 0˚C and 30˚C.
The Lite may be mounted directly against a wall or on the floor. There is no minimum
requirement for spacing around the battery from other objects provided that these objects
do not generate heat and that the vents on the sides of the battery are not blocked. Note
however that access is required to the USB programming port on the left side, and the CAN
Bus plug sockets and cable exits on the right side.
The Lite should be installed at least 500mm way from a heat source.
The Lite Home and Business IP rating is IP20. The breaker is rated for IP40.
5. Connecting the Freedom Lite
5.1 Power Cables
The Freedom Lite is simple to connect to the battery inverter. First of all you will connect
the 48V positive and negative cables to the inverter terminals using the applicable lugs.
Caution: Prior to connecting the positive and negative cables to the inverter be sure to
check that the main battery circuit breaker is switched off. This will ensure that there are
no short circuits between the loose ends of the cables.
The cables are supplied with the Freedom Lite, permanently fixed into the unit and secured
onto the casing using compression cable glands. Attach crimp lugs to the ends of both cables
ensuring that the correct terminal size is used and the lug is matched to the size of the

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cable. The positive cable is red and the negative cable is black. This is confirmed by + and –
signs on the battery casing beside the respective cables. See Tables 2.1 for the cable size
and quantity fitted to each Freedom Lite model. The cable cross sectional area is based on
an acceptable voltage drop with the inverter being mounted on the wall adjacent to the
Freedom Lite battery so that the cable run is less than 5m (note however that the standard
cable length is 1,8m, longer cables available on request).
Cable runs longer than 5m should be assessed and larger cables considered for extending
the Freedom Lite cables to minimise voltage drop. Double Insulation welding cable is
recommended.
The cables may be routed through trunking and connected into the inverter on the positive
and negative terminals respectively. The inverter terminals on most inverters can then be
used for linking up the charge controller(s) to the DC Bus. On Installations where there are
too many inverters and/or charge controllers to connect to the DC bus using the inverter
terminals as a junction point a DC connector box is required. Where more than one cable is
fitted per pole, the battery cables can be separately routed directly to separate equipment
(inverters and charge controllers) – if this is done the installer must take care to ensure that
any one of the cable pairs will not be overloaded. The cables for each pole are connected
together inside the battery.
5.2 Control Cables – Overview
For controlling external devices, you will need to connect the CAN Bus cable that allows the
Battery Management System inside the Freedom Lite to control and interface with these
devices.
The CAN Bus connection is made using the RJ45 plug with the pin configuration on the
battery plug end provided in Table 5.1.
Table 5.1 Colour Coding and Pin Configuration for CAN Bus UTP Control Cable
RJ45 Pin No. Standard Ethernet Cable Colours Wire Function
Pin 1 Orange/White CAN High
Pin 2 Orange CAN Low
Pin 3 Green/White Not connected
Pin 4 Blue CAN High
Pin 5 Blue/White CAN Low
Pin 6 Green Not connected
Pin 7 Brown/White CAN High
Pin 8 Brown CAN Low
For most inverters a standard LAN cable will work. For SMA a special cable is required
because of the resistor required on the inverter end of the cable – please refer to the
respective inverter brands manuals for their pin configuration or contact Freedom Won for
assistance. The special SMA cable is available from Freedom Won.

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If hard wired or relay control is required, please contact Freedom Won to discuss your
options. A common example or where a relay control from the battery may be desired is to
control an alternator with a remote enable function (in boats and RV’s).
5.3 CAN Bus Control – Detailed Description
CAN is a widely used communication protocol in systems with many devices that must
report their status or send commands to other devices on the same network. The Freedom
Lite BMS can transmit messages and commands in CAN protocol to provide information to,
but more importantly to control, external devices. CAN allows great versatility and provides
a simple installation because there are only two wires required in this form of
communication, namely CAN High and CAN Low. In order for an inverter or charge
controller to be controlled by CAN it must first of all be equipped with a CAN interface as
well as a suitable method of connecting the CAN wires. Further to this the Freedom Lite
BMS must be programmed with a CAN messaging profile that is developed for the inverter
or charge controller being used. This profile must be specifically developed for each inverter
model or model range. To date Freedom Won has developed CAN profiles for the following
equipment:
 SMA Sunny Island Battery Inverters
 Ingeteam Sun Storage Battery Inverters
 Victron Multiplus and Quattro Battery Inverters and MPPT Controllers via the Color
Control GX and Venus system controllers
 Studer
 Imeon
 Solax
 Goodwe
 MLT Drives (2019 models onwards)
 Socomec
 Koyoe
 ATESS (HPS and PCS ranges)
 Sunsynk
 Sunforce/Growatt
 Revo
 Axpert King
 Solis
Freedom Won welcomes any requests to produce BMS CAN profiles for other inverters that
are CAN equipped for BMS interface.
The CAN interface can provide the following functionality to compatible devices:
i. Charge Current Limit of all Lite’s connected
ii. Discharge Current Limit of all Lite’s connected
iii. Actual State of Charge (minimum of all lights connected)
iv. Actual Battery Temperature (highest of all lights connected)

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v. Actual Voltage
vi. Actual Current (total of all Lite’s connected)
vii. Maximum real time charge voltage setpoint
viii. Battery Name
ix. Highest Cell Voltage of all Lite’s connected
x. Lowest Cell Voltage of all Lite’s connected.
xi. Firmware Version
xii. Ah capacity of all batteries connected
xiii. Advanced communication between all connected Lites
The CAN 2.0 Part A and Part B standard uses the SAE J1939 standard in the Lite. It is
necessary to install a 120 Ohm resistor on each extreme end of the CAN cable (splices do
not require a resistor). Most devices operating on CAN have two plugs to connect in and
then out again on the CAN Bus. The first and the last device in the chain must have a
termination resistor plugged into the spare (second) plug. The Lite resistor plugs are
available from the inverter manufacturer and from Freedom Won. Ingeteam has a separate
CAN terminal block for bare wires to be inserted from the BMS and these units have an
internal resistor fitted into the device. From August 2018 all Freedom Lite models have two
CAN plugs for parallel configurations (Figure 4.2) and allowing fitment of the termination
resistors on the end of line units. Where one Lite is installed or where it is the end of line
CAN device, the Lite must be fitted with a termination resistor.
The Lite is supplied with a termination resistor as standard. The other devices must be fitted
with the correct termination resistor for that particular brand because the pin configuration
may differ from the battery plug.
The third-party device manuals must be referenced for all details regarding connecting the
CAN interface. Also refer to the Freedom Lite Home and Business manual for more CAN Bus
pin connection information.
Most brands use 500kbps. If 250kbps is required it is available on the Lite with a specific
profile loaded, which must be requested when ordering the Lite or can be loaded during
commissioning by your distributor for Freedom Won technical support.
If you did not purchase a CAN Bus cable to suit your inverter you can make your own
according to Table 5.2. Fig 5.1 provides the standard colour coding for an Ethernet cable
(note that there are other variations so double check this).

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Fig 5.1 Pin Configuration for standard Type T-568B RJ45 plug
Table 5.2 Pin Configuration for CAN Bus Control Cable for various supported inverters
Inverter Brand CAN L CAN H Comments
Victron (Venus Controllers) Pin 8 (brown) Pin 7 (brown/
white)
SMA (Sunny Island) Pin 5 (blue/
white)
Pin 4 (blue) Bridge Pin 3 and Pin 6 on Inverter
end of cable with a 120Ω resistor
Ingeteam Open terminal Open
terminal
Labelled on inverter
Imeon Pin 2 (orange) Pin 1
(orange/
white)
Solax Pin 1 (orange/
white)
Pin 2 (orange) This brand requires a special cable
to accommodate pin assignment on
inverter
Goodwe Pin 5 (blue/
white)
Pin 4 (blue)
Sofar Pin 2 (orange) Pin 1
(orange/
white)
Studer The Studer X-Com CAN can be
configured to suit one of the options
in Table 5.1 using the jumpers
supplied with the X-Com CAN unit
MLT Drives Pin 5 (blue/
white)
Pin 4 (blue)
Socomec Enquire with Freedom Won
Koyoe Enquire with Freedom Won
ATESS Open terminals
Sunsynk Pin 5 (blue/
white)
Pin 4 (blue)
Sunforce/Growatt Pin 4 (blue) Pin 5 (blue/
white)
This brand requires a special cable
to accommodate pin assignment on
inverter
Revo Pin 5 (blue/
white)
Pin 4 (blue)
Axpert King Requires a CAN Bus to RS485
converter that is available from
Freedom Won– enquire with
Freedom Won Sales

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Solis Pin 5 (blue/
white)
Pin 4 (blue)
If your inverter is not included in this table, please contact Freedom Won for assistance.
All BMS interfaces above operate at 500kbps baud rate except for Ingeteam, which operates
on 250kbps. Please enquire with Freedom Won Technical Support to change the default
500kbps to 250kbps.
5.4 Parallel Configurations
It is permissible to connect multiple Freedom Lite’s in parallel provided that the Freedom
Lite model size used is the same throughout. It is however more cost effective to purchase
one larger Freedom Lite model than connecting multiple units in parallel. This type of
installation should be reserved for future expansion where it is not feasible to purchase a
model large enough upfront for future requirements (financial constraints).
One Lite is programmed as the Master, while the rest of the Lite’s connected to the DC bus
are programmed as Slaves. A total of 10 units can be connected in parallel.
For installations using hard wired control to control the inverter or charge controller, the NO
and COM dry contact pairs from external relays controlled by the Master Lite via the DB15
plug are used (see further in manual for more information on the dry contact pairs).
The Master Lite must be connected to the slave Lite’s via the CAN Bus using standard LAN
cable.
Where CAN Bus is used to control the inverter(s) and charge controller(s), the CAN Bus from
any battery (preferably the Master) can be connected to the inverter directly or the system
controller, depending on the product brand. All Freedom Lite Home and Business models
are shipped with hardware that enables them to be configured either as a master or as a
slave. This is achieved by providing two RJ45 sockets on the battery – refer to Figure 5.2. On
the master, one socket is used for an end of line (termination) resistor, and the other socket
for connecting to the next item of equipment, whether it be a slave battery, an inverter, a
solar charge controller, or system controller. On a slave, each socket is used to connect to
another item of equipment.

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Figure 5.2 Picture Showing 2 x RJ45 Sockets for CAN Bus (DB15 Plug shown here for
Analogue and Relay Control is not available in new models)
Figure 5.3 CAN Bus Connection Example with Four Lites
Freedom Lite batteries can configure themselves automatically for master and slave
configurations with up to 20 slaves. No programming is required, simply connect the CAN
Bus cables and switch on the Lite’s. The Master will be the first battery that was switched
on.

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If the master Lite trips one of the slaves will take over as the master automatically without
any interruption of service.
Freedom Won offers a fair trade in on Freedom Lite’s on the purchase of new units, which is
an option for somebody wishing to expand their battery capacity instead of installing
parallel units. Please request more detail from Freedom Won if this is your upgrade
preference.
New units can be placed in parallel with old units up to about 5 years or 1 500 cycles, after
which it is preferable to trade in for a new larger unit.
6. Programming the Freedom Lite
The serial USB plug on the left-hand side of the Freedom Lite is used for setting up the
profile of the BMS. The USB cable required for connecting Freedom Lite to a computer is
supplied with the Lite. The computer must have the correct utility software installed.
Programming of the BMS is intended only as a function to be performed by Freedom Won
and approved distributors and installers. The manual on how to operate the BMS along with
the utility is available from Freedom Won. Write access to the BMS profile is password
protected, however users and owners may request read only access.
7. Switching on the Lite
The Lite is fitted with an “ON” button. Press this button for at least 5 seconds to switch on
the BMS inside the battery. Once the BMS has been energised you will observe the SoC
display come to life with the SoC level shown. Confirm at this stage that the error lite is not
illuminated. If it is, contact Freedom Won. If the Reduced Power light is illuminated, do not
be concerned, it should extinguish after the battery has been in operation for a few hours.
Once the BMS has been energised, the main breaker may be switched on by pushing the
breaker upwards. Ensure beforehand that you have secured the DC cables to their proper
locations and that the rest of the system is ready to receive battery voltage.
Note: On some inverters there is a large inrush current when switching on the DC supply. IT
is important in these instances to pre charge the DC bus. With Victron this can be achieved
by switching on the PV to the MPPT’s to allow them to apply voltage to the DC bus before
closing the battery breaker. If this option is not available, you can switch on the AC input
power to the Victron inverter as this allows the inverter to place voltage on the DC bus. If
you are using inverters that cannot do this, you will need to use a pre charge resistor.
To switch off the DC output from the Lite, pull down the breaker. To switch off the power to
the BMS, press the “OFF” button situated to the right of the “ON” button. This will also trip
the breaker if it is still on at the time. The Lite must be switched off fully when not in use to
prevent self-discharge.