RedEarth TROPPO-4841 User manual

[email protected]www.redearth.energy
15 Fienta Place
Darra, QLD 4076 1800 733 637
Troppo-4841 Manual - Version 1. – 17 Apr 2021
Installation and
Operation Manual
TROPPO-4841 LITHIUM BATTERY (LFP)

I. Safety Instructions 1
II. Overview 3
III. Physical Specifications 5
IV. Product Description 5
V. Understanding the Troppo Battery and its Use 7
VI. Charging and Discharging the Troppo Battery 7
VII. Battery Installation - Location and Equipment 9
VIII. Battery Connection and Operation 11
IX. Transportation 13
X. Troppo Battery Specifications 14
XI. Troubleshooting 17
XII. Maintenance 18
XIII. Options Available from RedEarth 18
XIV. Warranty 19
Table of Contents

1
Installers and users are responsible for familiarising themselves with this manual.
The Troppo-4841 battery is certified to IEC62619:2017 and AS/NZS 60950.
The Troppo battery uses high-quality cylindrical Lithium Ferro Phosphate (LFP) cells which are safe, robust
and reliable in higher ambient temperatures. The cells themselves are also certified to IEC62619 (2015) by
TuV, specifically for RedEarth, and have industry leading service life. They are fully recyclable.
Each Troppo battery has an internal Battery Management System (BMS) designed together with RedEarth
that provides protection against operation in over and under temperature, over and under voltage, over
current (charging), as well as short circuit (discharging) protection. It also extends the service life of the
battery through internal balancing of the individual cell strings.
Low voltage protection feature: The Battery Management System (BMS) has a feature that shuts down the
battery if the voltage goes below 40V+/-2 volts. This is to protect the cells from damage. See the relevant
section of this instruction manual to restart the battery.
The battery includes a 2-pole non-polarised circuit breaker specifically manufactured for RedEarth. A
2-pole circuit breaker is required to meet Australian standards for battery installations. A single pole
circuit breaker alone is not normally sufficient in Australia as batteries are usually installed with a floating
negative, unlike e.g. in the USA where the negative terminal is usually grounded to earth and so only a
single-pole circuit breaker is required on the positive cable.
Other safety features of the Troppo battery include the use of touch-safe high-quality industry standard
Amphenol Surlok DC connectors for safe and easy connection of the DC battery cables. These have a
significant safety advantage over legacy systems using exposed bolted terminals. Bolted connections
present a short-circuit risk as well as the possibility of a loose connection becoming a hot-joint.
The display included in the Troppo battery increases safety by showing the voltage and current status of
the battery at all times. This is helpful when batteries are being connected in parallel, and larger balancing
currents can flow if the battery voltages are not similar. Note that the BMS includes a safety feature that
does not allow current to flow if the battery voltages are different by more than 2-3 volts. Bring the battery
voltages closer together by charging or discharging one of the batteries before reconnecting.
The display also includes an odometer function that shows the total energy in kWh that has flowed into
and out of the battery. It can also be useful for indicating if one battery in a string is not doing as much
work as other batteries.
A status indicator light is also included on the battery. This is always lit when the battery circuit breaker is
on and the battery is ready for use. If the battery has shutdown due to under-voltage protection shutdown,
then it will not light up. The light also incorporates a momentary button feature that is for future
developments of the battery.
Installation:
Installation should only be performed by qualified and experienced installers who can specify the correct
cables and DC bus arrangement, external circuit protection, polarity checking and suitability of the design
for the application. RedEarth provides factory built and tested energy storage systems designed and
engineered to national and state requirements to simplify installation.
I. Safety Instructions

2
Transportation:
Lithium Ferro Phosphate Batteries are classed as Dangerous Goods (DG) Class 9 UN3480and therefor
safe for transport. The batteries are shipped in approved transport protection packaging in a partially
discharged state with terminal protection in place and the circuit breaker off.
Basic Safety and handling:
• Battery pack is intended to be a 2 person lift when being installed.
• Battery should not be exposed to temperatures above or below the temperature rating specified in
this manual.
• Battery should not be installed where it is in direct sunlight, or where it can become wet.
• Battery should not be exposed to strong impacts, crushed or punctured.
• Do not short the battery terminals or connect with reverse polarity!
• Battery should not be disassembled unless qualified and approved by RedEarth to do so.
• Battery should be kept away from animals and children.
• The maximum stacking height is 8 batteries when in RedEarth’s transport box.
Damaged battery:
A damaged battery must not be used and returned to RedEarth as soon as possible or disposed of via a
recycling facility. Leaking electrolyte can cause skin irritation and chemical burns so contact should be
avoided.
Eye Contact Rinse gently with running water. Seek medical attention if irritation
develops.
Skin Contact Rinse gently with running water. Seek medical attention if irritation
develops.
Ingestion If Ingested do not induce vomiting and contact your local poisons
information centre or doctor.
Inhalation Evacuate area and seek professional medical attention immediately,
however an inhalation hazard is not expected due to product form and
nature of use.
Fire:
In the unlikely event of a fire a dry agent fire extinguisher should be available and used. DO NOT use water.
Evacuate the area and call emergency services. Toxic gas may be produced if the battery catches fire.
SDS:
Note: Refer to the SDS document for more details. The SDS is available from RedEarth Energy Storage Ltd.

3
The TROPPO-4841 Battery is RedEarth’s own in-house developed and built lithium-ion battery.
It is an Australian-made product that is designed and assembled by RedEarth in its facility in Brisbane.
The TROPPO battery’s features make it one of the easiest and safest lithium-ion batteries to install and use,
and you have the support of RedEarth’s experienced Brisbane-based technical team behind you. Just call.
The TROPPO battery has been specifically designed to be self-managing. This means it does not need to
communicate with the inverter/charger to operate. There is no need for multiple communication wires
between the batteries and inverter (and the complications that go with configuring it), making installation
simple. It also allows the battery to be used in systems which do not have the capability to communicate
with batteries. For example, older lead-acid based battery systems that need a replacement battery.
Troppo batteries include a display that shows the battery voltage and current. It also includes an odometer
II. Overview

4
that shows how many “miles” the battery has done in its lifetime (measured in total kWh into and out of
the battery)
Battery connectors are the industry standard, safe and easy to connect Amphenol connectors. A built-in
two pole circuit breaker allows for time and cost savings during installation.
The batteries can be connected in parallel to suit applications from the smallest domestic application,
right through to telecommunications and commercial sized projects (note: they are not suitable for series
connection).
The battery can be coupled with many of the inverters available in Australia today. RedEarth can assist you
in selecting the requirements for your system and setting the appropriate parameters.
The Troppo is currently available in a 48Vdc model and is sized to be installed in standard 19” (inch) racks.
RedEarth also provides its own range of purpose built 19” racks for this.
The TROPPO-4841 battery is certified to IEC62619:2017 and AZ/NZS60950 allowing it to be used in Australia.
It is supplied in the appropriate DG approved shipping carton.
Qualified installation person (Installer)
The installation tasks described in this manual should be carried out by a suitably
qualified and skilled installer with adequate skills, qualifications, and experience. They
should:
Have a thorough understanding of operations, design, and installation principles of On
and Off grid electrical systems.
Have a thorough understanding of the risks and dangers associated with installing and
using electrical equipment.
Hold all local, state and country-based qualifications to carry out such work.
Adhere to all safety and installations requirements contained in this manual.

5
The TROPPO-4841 battery is a lithium Ferro Phosphate (LFP) battery that contains a Battery Management
System that manages the battery cells. It does not need to communicate with the charger or inverter,
however it is important that the charger and inverter are programmed to provide the correct voltage and
current for the TROPPO battery.
The image below shows the Battery face cover plate including where the connection and control
components are located.
Battery Weight 42.5kg
Battery
Dimensions
438mm wide x
725mm deep x
88mm high
Package Weight
(with Battery)
44.0kg
Package
Dimensions
540mm wide x
800mm deep x
160mm high
TROPPO Battery:
4.1kWh nominal (49.8Ah)
LiFePo4 chemistry
BMS (internal):
Self-managed battery
Battery Display:
Including Battery Odemeter
(total lifetime kWh)
Handle:
80kg rating
Earth point:
M6 size nut
Battery ON indicator:
Push button function not used
Current Protection:
63 amp On/Off MCB
Amphenol plugs:
Surlok 5.7mm (100amp)
III. Physical Specifications
IV. Product Description

6
An exploded view of the Troppo battery is shown below. The arrangement of the cylindrical LFP cells can
be seen. Each cell has a capacity of 3,800mAh and a voltage of 3.2Vdc. There are 16 cells in series which
provides a battery voltage of 51.2V (48V nominal). There are also 21 cells in parallel adding up to 336 cells for
the battery, and a total nominal capacity of 4,086Wh.
Note: Do not open the battery. There are no user serviceable components and it will void the battery
warranty.

7
The Troppo battery is designed to be easy to install and use. It can be used in applications requiring
a nominal 48VDC battery bank. The Troppo battery is designed for a wide range of 48VDC applications
including but not limited to renewable energy systems, telecommunications, and mining applications.
As it is designed with a self-managed Battery Management System (BMS), it does not need to
communicate with the inverter/charger to operate. This makes it suitable for a larger range of applications
than the typical Lithium-ion battery that requires communication with the inverter/charger to continue to
operate.
This section of the manual explains characteristics, features, and options for use of the battery.
Additional support is available through RedEarth Technical Support by calling 0487 002 451, emailing or
visiting the RedEarth manufacturing facility in Brisbane, Australia.
Additional information can be found at www.redearth.energy
RedEarth offers a wide range of training options for our partners including regular training courses run at
our Brisbane facility, on-site for our larger customer as well as online training options.
The battery should always be charged and discharged within the voltage, current and temperature ranges
listed in the specifications for the battery at the end of this manual and in the data sheet.
When connecting to Inverters and chargers the parameters set in these devices are important for safe
battery operation. The table below provides a guide to some of the key parameters to set. RedEarth also
provides guides for setting up popular inverters and MPPTs. If in doubt, contact RedEarth.
All currents are maximum total charging and discharging currents and should be taken into consideration
when multiple devices are charging the battery (e.g. MPPT and inverter/charger).
For full warranty coverage the battery must be operated within the voltage, current and temperature
windows defined on the following page and in the specifications in this manual and the data sheet.
V. Understanding the Troppo Battery and its Use
VI. Charging and Discharging the Troppo Battery

8
Inverter or charger programming - battery parameter
settings
Installer Information
Battery type Lithium, User-defined or Sealed
Lead-acid
If no Lithium or user-defined option is available then set to
sealed Lead-acid
Charging method CC-CV Constant Current (CC) (<max. charge current of TROPPOs)...
then... Constant Voltage (CV) setting of 57.6V
Recommended continuous
Discharge Current
maximum 40A per Troppo
battery
Install sufficient batteries to ensure that the batteries are
not overloaded (see RedEarth recommendation)
Recommended continuous
Charge Current
maximum 16A per Troppo
battery
Install sufficient batteries to ensure that the batteries are
not overloaded (see RedEarth recommendation)
Max. Charge/Discharge
Current
maximum 63A per Troppo
battery
Limited by the 63A MCB and also the fixed BMS internal
charging current protection of78amps +/- 8 amps
Charging end current 0.8amps (0.01C) End Constant Voltage charging once current drops below
0.8 amps per TROPPO battery
Continuous Charge Voltage
(Absorption voltage) 57.6VDC Recommended charge voltage of TROPPO
Float Voltage disable float, otherwise set to
53.5V Float voltage charging is not required
Equalisation Voltage disable equalisation, otherwise
set to 53.5 VDC
Avoid equalising the TROPPO battery
Inverter Shut Down voltage
(per Warranty)
48.0V (most of battery capacity
used)
Inverter stops inverting. Leaves enough capacity to avoid
internal shutdown while waiting for a charging source (e.g.
solar)
Inverter Shut Down SoC 20% if available as an option
Inverter stops inverting. This leaves enough capacity to
avoid internal shutdown while waiting for recharging (e.g.
solar)
Restart Voltage of inverter 50V Set restart voltage of inverter at 50VDC to allow battery to
recharge enough prior to applying the load to the inverter
if required
Peukert Exponent 1.02
Cable Size Refer relevant manual or cable
sizing standard
Amphenol 5.7mm Surlok - rated at 120A with 25mm2cable
(100A with 16mm2)
The inverter (or MPPT) connected to the Troppo needs its
battery parameters set as listed above. If the inverter shut down
voltage is set too low there is a risk that the battery switches
itself off internally for protection. This then requires a manual
restart of the Troppo battery.
Refer to separate inverter-specific information in the
TROPPO installation manual, otherwise contact RedEarth

9
Observe the requirements detailed in the Safety instructions at the start of this manual.
The TROPPO battery is approved for use in three types of applications.
1 In RedEarth’s pre-built and certified Energy Storage Systems: RedEarth provides complete
Ready-to-Run battery systems that use the TROPPO-4841 battery. These include the BlackMax,
SunRise (Mini and Maxi), HoneyBadger and DropBear systems for both on and off-grid applications.
Call for details.
2 RedEarth’s RACK19 system: This allows qualified installers to add RedEarth’s approved Battery
System as the storage component of a 48Vdc installation.
RACK19 can be supplied as an IP20 cabinet to house with a maximum of 8 or 20 batteries for
indoor applications. RACK19 can be configured with a built in Battery Breaker (160-250amp
NOARK MCCB) and a Victron BMV-712 battery monitor. This allows monitoring of the whole stack
of TROPPO batteries and includes an alarm option (eg low battery voltage) as well as Bluetooth
monitoring on your phone. There is a standard and premium version of the RACK19 system
available.
A remote monitoring option is also available from RedEarth that includes 4G connectivity to the
local network.
IP54+ cabinets are also available from RedEarth for outdoor applications. These outdoor enclosures
can be airconditioned if required.
VII. Battery Installation - Location and Equipment

10
3 Custom installations by qualified installers: Sizing the System is often dictated by the
application. In these cases, the installation location of the battery must take into consideration
the IP rating (IP40) and operating temperature range specified in the Specification section of this
manual. The optimal ambient temperature range is 0°C to 45°C.
TROPPO batteries do not vent any harmful gases and do not require special ventilation or cooling.
The Troppo battery is designed to be installed in a 19” rack or an electrical enclosure of your choice.
If the battery is to be installed outdoors a suitable IP54 enclosure should be used.
The location of the batteries should meet the following conditions:
• A >3mm clearance is require around the battery for a minium of 70% of the surface area.
• The batteries are not located in a salt-air environment, e.g. by the ocean. If this is unavoidable then
appropriate air filtration should be used to prevent salt air contacting the battery.
• There are no explosive or flammable materials nearby (refer to AS5139 and the Best Practise guide https://
batterysafetyguide.com.au/.)
• Charging and discharging outside of the optimal ambient temperature range should be limited to C5 and
the battery cells should remain between the max and min operation temperature range as specified in
this manual. (the internal BMS will stop the operation of the battery if the cell temperatures move outside
their specifications)
• The temperature and humidity remain relatively constant to avoid condensation.
• The area is clean with minimal dust.
• The batteries and battery cabinets/housings are not exposed to direct sunlight.
• The TROPPO battery can be installed horizontally, vertically or on its left or right side.
RedEarth can supply connectors, bus bars, DC battery cable, battery breakers and ancillary items to
assist qualified installers in completing their installations. Call RedEarth Technical support on
0487 002 451.
DC battery cables:
Each battery has a positive and negative Amphenol
SurLok non keyed male connector for easy snap on
connection. A full range of pre-made cable and mating
connectors are available from RedEarth.
Multi-battery bus bar and DC Battery Breaker:
If multiple batteries are to be connected, then
RedEarth can supply a Victron busbar which is rated
to 1000A. Several can be bolted together when larger
numbers of batteries are required. RedEarth also uses
and can supply Noark MCCBs.
Monitoring:
RedEarth can supply a Victron BMV-712 monitor with
alarm relay and Bluetooth capability (see next page). It
is included in the RACK19 product as standard.
Right Angle Plug (Black)
Suit 16mm2 cable
SLPPA16BSB
Right Angle Plug (Red)
Suit 16mm2 cable
SLPPA16BSR
Panel Mount (Black)
Threaded Post
SLPRATPSB
Panel Mount (Red)
Threaded Post
SLPRATPSR
SurLok Plus 5.7mm (IP67)

11
Connecting batteries together in parallel:
1 When connecting multiple TROPPO batteries to a single inverter/charger follow the steps below.
Confirm status of the battery: On each battery switch ON the OVERCURRENT PROTECTION MCB
and confirm that the display and indicator light illuminates (blue light in grey battery). By looking
at the display, confirm that the battery voltage is between 48.0VDC and 55.2VDC. It is recommended
that the voltages of all the batteries are within 0.5 volts of each other to avoid high current flows
between the batteries once they are all connected in parallel. Note that the BMS in the batteries
will not allow electrical connection if the voltage difference between the batteries is greater than
2-3 volts. Bring the battery voltages closed together by charging or discharging one of the batteries
before connecting in parallel.
2 Switch OFF the OVERCURRENT PROTECTION MCB of all batteries.
3 Next, ensure the separate Main Battery Breaker connected to the inverter/charger is OFF.
4 Connect all the batteries in parallel, by connecting them to the main bus bar using the correct
Amphenol 5.7mm Surlok cables (available from RedEarth and already included in all RedEarth
Battery Voltage:
Normal range: 48.0 to 55.2 VDC
Battery Current:
+ve = discharging,
-ve = charging
Battery Odometer:
Total Energy (kWh)
IN & OUT over the
lifetime of the battery
Battery Power:
Maximum ~3000W
discharge
Battery Runtime:
Total hours battery is under load
Battery SOC (state-of-charge):
0% = 48V and 100% = 55V
ON-OFF Button:
This switches the
display off and on.
Note: when the display
is off odometer does
not continue to count
kWh into or out of the
battery.
Internal and External
Measurements
VIII. Battery Connection and Operation

12
systems). This busbar will be connected to the inverter/charger via a separate Main Battery Breaker
(Double check that all the battery cables are connected to the correct polarity).
5 Switch on all the OVERCURRENT PROTECTION MCBs of the batteries and monitor the displays to
ensure there are no large currents flowing. These currents will reduce quickly and will balance the
batteries if their SOC was not the same. Once all balancing currents are below 5 Amps move to the
next step.
6 Switch on the Main Battery Breaker. The inverter/charger should power-up depending on the type.
7 Adjust the parameters of the inverter/charger to match the requirements of the TROPPO batteries.
Refer to the settings included in this manual. This is a critical step. If you are unsure of the settings
required contact RedEarth, as damage to batteries caused by incorrect settings of the inverter/
charger will affect your warranty.
8 If you have purchased a RedEarth system with the RedEarth remote monitoring option, you can
contact RedEarth now. RedEarth will log into your system and confirm that everything is operating
correctly.
RedEarth values both Installer and customer feedback. Please contact RedEarth.
Shutdown Process:
To shutdown the battery, the OVER-CURRENT PROTECTION must be switched towards the OFF
position.
Shutting down the battery will cause loss of power on the battery terminals (+ve and -ve)
Earthing:
Next to +ve and -ve there is a attachment point for a M6 screw. This is where an earthing cable (secured
by an M6 screw up to 12mm long) must be connected should the application require grounding of the
case to the same potential of its enclosure.

13
Individual batteries are shipped in approved transport boxes that include the required shipping labels for
land transportation in Australia, or in pallets of batteries up to eight batteries high.
The batteries are shipped with,
• The built-in battery switch in the off position (no voltage on the battery terminals)
• The batteries in a partial state of charge, as required for shipping in Australia. (<30% SOC)
• Plastic caps over the battery terminals for additional protection
IX. Transportation

14
The table below, extending to the following two pages, includes all the specifications of the TROPPO
battery that need to be understood.
It also includes additional information to help the installer to understand the specifications and
parameters of the battery.
More detailed information on specific settings required for Victron, Selectronics, Voltronics and SunGrow
hybrid inverters are available separately. These are the inverter brands currently used by RedEarth. If your
inverter is not included in the above, please contact RedEarth for further instructions.
Troppo 4841 Self-Managed LFP Battery Module
The TROPPO battery incorporates a self-managed BMS that does not require commuication with the inverter/charger to
operate. It does however require the inverter/charger settings to be within the specification of the battery as listed below.
Electrical Characteristics Installer Information
Nominal Capacity 4.1kWh / 79.8Ah 79.8Ah x 51.2VDC (nominal battery voltage) = 4,086Wh
(approx. 4.1kWh) 16S21P = 336 x 3,800mAh cells.
Usable Capacity 3.69kWh (90% of nominal
capacity)
Useable capacity is the capacity available when operating
the battery within the normal voltage range of the
connected inverter/charger (48.0-57.6VDC). Nominal
capacity is the capacity when the battery is operated from
its lowest shutdown voltage up to its maximum charge
voltage in a laboratory environment (40.0-58.4VDC).
Nominal DC Voltage 51.2V 3.2V per cell (LFP type) x 16 cells in series (16S) = 51.2VDC
Maximum Discharge
Current 63A (Limited by circuit breaker)
63A 2-pole MCB protects battery and cabling. K-curve
breaker characteristic (e.g. thermal shutdown in 3-60 mins
at 75 amps.
Lifetime Continuous
Discharge Current 40A (C2) Recommend C2 rate for LFP chemistry = 79.8Ah x 0.5 = 40ADC for longest life.
Maximum Charge Current 63A (Limited by circuit breaker) BMS over charging current protection is set at 78A +/- 8A
however the 63A K-curve MCB will switch off as design.
Lifetime Continuous
Charge Current 16A Recommended is 40% of C2 rate = 16A (C2 rate = 79.8Ah x 0.5 = 40ADC) for maximum life.
Maximum Power on
discharge (kW) Approx. 3kW Maximum 63A x ~50V = 3,000W+
Recommended operating
voltage range 48.0 - 57.6VDC
48.0VDC ensures the inverter stops supplying loads before
the battery shuts down internally. 57.6VDC is required for
the balancing circuit inside the BMS to balance all the cell
strings at the top of charge.
Charge / Discharge Cycles
of certified 3,800mAh cells
at 1C rate (to 80% Residual
Capacity
2,000@100% DoD / 4,000@80%
DoD / 7,000@50% DoD @ 25°C
operating temp.
4,000 cycles = 10.9 years at 80% daily DoD (Depth of
Discharge) when charging and discharging at 1C rate
(79.8A). This is for the cells used in the Troppo Battery.
Projected MWh delived
over battery lifetime 13.08 MWh at 80% DoD = 4,000 cycles x 4.086kWh x 80%DoD = 13.08MWh
X. Troppo Battery Specifications

15
Round Trip Efficiency >96% Minimal battery losses and therefore minimal internal heat
generation in normal operation
Parallel connection from 4.1kWh to 100kWh+ Ask RedEarth for advice and support
Series connection Not designed for series
connection
Only designed to operate in normal 48VDC systems — ask
RedEarth for support.
Expected calendar Life
@25°C
>10 years when used as per
warranty terms
RedEarth warranty 10 years — see warranty document for
details.
Environmental Characteristics
Operating Temperature
Range - Discharging Discharge: -20°C to 60°C (+/-5°C)
BMS shuts down discharge when the internal cell
temperature sensor measures outside this temeprature
range. This is an abnormal situation and requires
investigation. As such the battery requires a manual restart
before it can be operated again.
Operating Temperature
Range - Charging Charge: 0°C to 50°C (+/-5°C)
BMS shuts down charging when the internal cell
temperature sensor measures outside this temperature
range. It will automatically restart once the temperature
sensor measurement moves back into the range 5°C to
50°C (+/-5°C).
Cooling Natural convection No fans... install in a shaded area.
Physical Characteristics
Battery mounting options
In a standard 19° rack or
horizontally, vertically or on
either side
RedEarth can provide its pre-wired RACK19 system with
built-in main battery breaker and Victron BMS-712 battery
monitor. It also has a range of fully pre-wired inverter
battery systems for both on and off-grid applications.
Battery terminal
connections
Amphenol Surlok 100A non-
keyed
100A if using 16mm2battery cable; 120A is using 25mm2
battery cable (Note: 63A MCB prevents current raching
this level).
Battery circuit breaker 2-Pole 63A 360VDC (K-curve) 2-pole 63A 600VDC (K-curve) ZJBenny
Battery dimensions 725mm D x 438mm W x 88mm
HFits into a 19” rack (2RU high) and 800mm deep
Battery weight 42.5kg Handle is rated to 80kg
IP rating IP20
Ingress Protection IP20: 1st number (solids) - 2= protected
from fingers > 12.5mm (this is related to the Amphenol
connector). 2nd number (liquids) - 0= not protected.
Safety Parameters and Certification
Short-circuit current 400A per battery in prallel 1) max BMS discharge protection = 400A (<0.1 seconds)
K-curve 63A MCB = 8-14In = 504-882A (<0.01 seconds).
Lithium Composition Lithium Ferro Phosphate
(LiFePO4 or LFP)
Safest lithium chemistry (LFP). Note: LG uses NMC lithium
which has higher energy density but is not as stable.
Certification - TROPPO 4841
Battery IECL62619:2017 Approved for use in Australia

16
Certification - LiFePO4
3,800mAh cell IECL62619:2017 & UN38.3 3,800mAh cell used in the Troppo battery is certified by TuV for RedEarth in the company name.
Battery Management System (BMS) Protection Settings
Battery type and number
of cells in series LiFePO4 (16S) Custom BMS designed for RedEarth
BMS Over-Volt cut off 58.4VDC Maintain battery between 48.0 & 57.6VDC
BMS Under-Volt cut off 40V Battery will switch off internally - follow Flat Battery
Restart procedure to restart the battery
Charging over-current
protetion 78±8A Battery will stop charging above this level
Discharge over-current
protection
(2 levels)
250±60A(20-400mS) &
400±100A(10-100mS)
2 levels: 250+/-60A delay 20-400mSec; 400+/-100A delay
10-100mSec.
Inverter capacitors -
starting capability 14,600uF
The battery can provide the surge current needed to start
an inverter with up to 14,600uF of capacitors on the DC
side.
High temperature -
discharge protection 60±5°C Battery will not discharge if the two temperature sensors in the cell pack are reading above this temperature.
High temperature - charge
protection 50±5°C
Battery will not charge if one of the two temperature
sensors in the cell pack are reading above this
temperature.
Low temperature -
discharge protection -20±5°C Battery will stop discharging if one of the two temperature sensors reads below this temperature.
Low temperature - charge
protection 0±5°C
Battery will stop charging if temperature sensors below
this temperature - Required feature of all installed
battery systems.
Cell balancing method Passive equalisation at 57.6VDC
Top balancing (i.e. during charging once each row of cells
reaches (3.65V)
Note: In our efforts towards constant product enhancement this specification is subject to change to at anytime without
notice.

17
The Troppo battery is a self-managed lithium battery system. This simplifies installation as no
communication cables are required between the inverter/charger and TROPPO batteries.
It does however require the inverter/charger settings to be correct to operate without any issues. Contact
RedEarth if the following information does not solve your problem.
Flat Battery
Field experience has shown that
the most common problem is the
battery being discharged to the
point where the internal BMS in the
TROPPO shuts down the battery.
Follow the procedure shown at
right to restart the battery.
If this is unsuccessful you will need
to apply a 48VDC voltage to the
terminals of the battery to “jump-start” it. RedEarth can supply a
suitable charger, which needs to be plugged into 230VAC.
Adding additional batteries:
It is possible to add additional batteries to an existing TROPPO
installation at a later date. If you are to add extra capacity the
battery must be of the same type, part number, and specification.
Before adding the new battery, the original battery bank and
the new battery must be bought up to a similar same voltage
(within 0.5 volts as shown on the battery displays). This is achieved
by discharging or recharging the existing battery until it is the
same voltage as the new battery. The new battery can then be
connected to the existing batteries.
Repairable TROPPO:
The TROPPO battery is designed to be repairable, however this is only able to be done by RedEarth or
by personnel trained and qualified by RedEarth. This could be a larger partner with technical repair
capabilities. Attempting to repair the RedEarth Troppo will void the warranty.
Support from RedEarth:
RedEarth has additional information on the website: www.redearth.energy, including instructional videos.
RedEarth Contact Details:
RedEarth Energy Storage Ltd
15 Fienta Place, Darra
Brisbane QLD 4076,
Australia
RedEarth office: [phone]
1800 733 637
Technical support: 0487 002 451
Email: [email protected]
XI. Troubleshooting