HOMEGRID Stack'd Series User manual

Stack’d Series
Reference Manual

Stack’d Series HOMEGRID Technical
Rev 00
07/19/2021

Stack’d Series HOMEGRID Technical
Table of Contents
1. Safety Precautions...........................................................................................................1
1.1. General warnings.............................................................................................................1
1.2. Charge and discharge warnings.......................................................................................2
1.3. Transportation warnings..................................................................................................3
1.4. Disposal of lithium batteries ...........................................................................................3
1.5. Before Connecting...........................................................................................................3
1.6. In Using...........................................................................................................................4
2. Introduction.....................................................................................................................5
2.1. Lithium iron phosphate battery .......................................................................................5
2.2. Stack’d Series Features ...................................................................................................5
2.3. Specifications ..................................................................................................................6
2.4. Equipment Interface Instruction......................................................................................7
2.5. Sleep and Wake up........................................................................................................14
2.5.1 Sleep........................................................................................................................14
2.5.2Wake up....................................................................................................................14
2.6. Forced discharge mode..................................................................................................14
3. How to match communication with inverter.................................................................15
3.1. Supported brands...........................................................................................................15
3.2. Inverter matching list ....................................................................................................15
3.3. Connection with inverter...............................................................................................16
4.Safe handling of lithium batteries Guide...............................................................................17
4.1. Schematic Diagram of Solution ....................................................................................17
4.2. Familiar with system.....................................................................................................17
4.3. Precautions before installation......................................................................................17
4.4. Tools..............................................................................................................................18
4.5. Safety Gear....................................................................................................................18
5.Installation.............................................................................................................................19
5.1. Package Items................................................................................................................19
5.2. Installation Location......................................................................................................19
5.3. Parallel Installation........................................................................................................20
6.Trouble Shooting Steps.........................................................................................................23
6.1. Problem determination based on...................................................................................23
6.2. Preliminary determination steps....................................................................................23
7.3.The battery cannot be charged or discharged.................................................................23
7.Storage,Transportation and Emergency Situations...............................................................24
7.1. Storage...........................................................................................................................24
7.2. Transportation ...............................................................................................................24
7.3. Emergency Situations....................................................................................................24

Stack’d Series HOMEGRID Technical
Page 1 Chapter 1: Safety Precautions
1. Safety Precautions
It is very important and necessary to read the user manual carefully before installing or using
the battery. Failure to do so, or to follow any of the instructions or warnings in this document,
can result in electrical shock, serious injury, or death, or can damage battery, potentially
rendering it inoperable.
1.1. General warnings
Any uncovered battery material such as electrolyte or powder on the skin or in the
eyes must be flushed with plenty of clean water immediately. Then seek medical
assistance. Spillages on clothing should be rinsed out with water.
Explosion and fire hazard. Terminals of the Li-ion Battery are always alive;
therefore, do not place items or tools on the Li-ion Battery. Avoid short circuits, too
deep discharges, and too high charge currents. Use insulated tools. Do not wear any
metallic items such as watches, bracelets, etc. In case of fire; you must use a type D,
foam or CO2 fire extinguisher.
Do not open or dismantle the battery. Electrolyte is very corrosive. In normal
working conditions contact with the electrolyte is impossible. If the battery
casing is damaged do not touch the exposed electrolyte or powder because it
is corrosive.
Observe these instructions and keep them located near the Li-ion Battery for
future reference.
For more information about this product, please visit the official website:
http://www.homegridenergy.com
Work on a Li-ion Battery should be carried out by qualified personnel only.
While working on the Li-ion Battery wear protective eyeglasses and clothing.
Li-ion batteries are heavy. If involved in an accident they can become a
projectile! Ensure adequate and secure mounting and always use suitable
handling equipment for transportation.
Handle with care because a Li-ion battery is sensitive to mechanical shock.
Do not expose cable outside, all the battery terminals must be disconnected
for maintenance
.
Do not place in a children or pet touchable area.
Do not use cleaning solvents to clean the battery.

Stack’d Series HOMEGRID Technical
Page 2 Chapter 1: Safety Precautions
1.2. Charge and discharge warnings
If the battery is stored for long
period of
time, it is required to
be
charge
d
every six
months, and the SOC should be no less than 90%.
Use only with a HOMEGRID approved BMS.
If charged after the Lithium Battery was discharged below the “Discharge cut-off
voltage”, or when the Lithium Battery is damaged or overcharged, the Lithium
Battery can release a harmful mixture of gasses such as phosphate.
The temperature range over which the battery can be charged is 0°C to 45°C.
Charging the battery at temperatures outside this range may cause severe damage to
the battery or reduce battery life expectancy.
The temperature range over which the battery can be discharged is -10°C to 55°C.
Discharging the battery at temperatures outside this range may cause severe damage
to the battery or reduce battery life expectancy.
Do not drop, deform, impact, cut or spear the battery with a sharp object.
Do not wet the battery and avoid of direct sunlight.
Do not use a damaged battery.
Please contact the supplier within 24 hours if there is something abnormal.
Do not expose the battery to flammable or harsh chemicals or vapors.
Do not paint any part of the battery; including internal or external parts
components
.
Battery needs to be recharged within 12 hours, after fully discharged.
Do not connect battery with PV solar wiring directly.
It is prohibited to insert any foreign object into any part of battery.
Any warranty claims are excluded for direct or indirect damage due to items above.

Stack’d Series HOMEGRID Technical
Page 3 Chapter 1: Safety Precautions
1.3. Transportation warnings
NOTE ：
●Batteries are tested according to UN Handbook of Tests and Criteria, part III, sub section 38.3
(ST/SG/AC.10/11/Rev.5).
●For transport, the batteries belong to the category UN3480, Class 9, Packaging Group II and have to be
transported according to this regulation. This means that for land and sea transport (ADR, RID & IMDG)
they have to be packed according to packaging instruction P903 and for air transport (IATA) according to
packaging instruction P965. The original packaging complies with these instructions.
1.4. Disposal of lithium batteries
1.5. Before Connecting
◆After unpacking, please check product and packing list first, if product is damaged or parts
are missing, please contact the local retailer or manufacturer;
◆Before installation, be sure to cut off the grid power at the inverter and make sure the battery
is in the OFF mode;
◆Wiring must be correct, do not mistake the positive and negative cables, and ensure no short
circuit with any external device or object;
◆It is prohibited to connect the battery and AC power directly;
◆The embedded BMS in the battery is designed for 48VDC, please DO NOT connect the
battery in series;
◆Battery system must be well grounded and the resistance must be less than 1ohm;
◆Make sure the grounding connection is set correctly before operation.
The battery must be transported in its original or equivalent package and in an upright
position. If the battery is in its package, use soft slings to avoid damage.
Do not stand below a battery when it is hoisted.
Never lift the battery at the terminals or the BMS communication cables, only lift the
battery at the
handles.
Batteries marked with the recycling symbol must be processed via a recognized
recycling agency. By agreement, they may be returned to the manufacturer.
Batteries must not be mixed with domestic or industrial waste.
Do not throw a battery into fire.

Stack’d Series HOMEGRID Technical
Page 4 Chapter 1: Safety Precautions
◆Ensure the electrical parameters of the battery system are compatible to all related equipment;
◆Keep the battery away from water and fire.
1.6. In Using
◆If the battery system needs to be moved or repaired, the power must be cut off at the inverter
system and the battery must be completely shutdown;
◆It is prohibited to connect the battery with any different type of battery.
◆It is prohibited to connect the batteries with faulty or incompatible inverters；
◆It is prohibited to disassemble the battery (QC tab removed or damaged);
◆In case of fire, only dry powder fire extinguisher can be used, liquid fire extinguishers are
prohibited;
◆Please do not open, repair or disassemble the battery except trained technicians from
HOMEGRID or authorized by HOMEGRID. We do not undertake any consequences or related
responsibility which, because of violation of safety operation, or violation of design, production
and equipment safety standards.

Stack’d Series HOMEGRID Technical
Page 5 Chapter 2: Introduction
2. Introduction
The Stack’d Series lithium iron phosphate battery is an energy storage product developed and
produced by HOMEGRID, it can be used to support reliable power for various types of
equipment and systems. The Stack’d Series is especially suitable for applications of high power,
limited installation space, and restricted load-bearing and long cycle life.
The Stack’d Series has a built-in BMS battery management system, which can manage and
monitor cell’s information including voltage, current and temperature. What’s more, the BMS
can help extend the cycle life by balancing cells during charging and discharging.
Multiple batteriy stacks are allowed to be connected in parallel to expand capacity and power
to meet the requirements of longer power supporting duration and higher power consumption.
2.1. Lithium iron phosphate battery
The lithium iron phosphate battery (LiFePO4 or LFP) is the safest of the mainstream lithium
battery types. A single LFP cell has a nominal voltage of 3.2V. A 51.2V LFP battery consists
of 16 cells connected in series.
LFP is the chemistry of choice for very demanding applications. Some of its features are:
◆Rugged - It can operate in deficit mode during long periods of time.
◆High round trip efficiency.
◆High energy density - More capacity with less weight and volume.
◆High charge and discharge currents - Fast charges and discharges are possible.
◆Flexible charge voltages.
The lithium iron phosphate battery is therefore the chemistry of choice for a range of very
demanding applications.
2.2. Stack’d Series Features
◆The whole stack and each module is non-toxic, pollution-free and environment-friendly;
◆Cathode material is made from LiFePO4 with safety performance and long cycle life;
◆Battery management system (BMS) has protection functions including over-discharge, over-
charge, and over-current and high/low temperature;
◆The system can automatically manage charge and discharge state and balance current and
voltage of each cell;
◆Flexible configuration, multiple battery modules can be stacked for expanding output and
Capacity.
◆Adopted self-cooling mode efficiently reduces any system noise;
◆The module has less self-discharge, up to 6 months without charging on a shelf, no memory
effect, with excellent performance of shallow charge and discharge;
◆Working temperature range is from -10 to 55℃(14F-131F) , (Charging 0~45℃(32-113F);
discharging -10~55℃(14F-131F) )with excellent discharge performance and cycle life;
◆Small volume, light weight, plug-in embedded design modules, are easy to install and
maintain;

Stack’d Series HOMEGRID Technical
Page 6 Chapter 2: Introduction
2.3. Specifications
Figure 2.1.Overall system diagram
No. Items Parameters
1 Model SS*-LFP***00-2A01
2 Main Controller Module SS-MC100-200M2
3 Battery Module Type SS-FS48100-16OSJ1
4 Battery Module Chemistry LiFePO4
5 Battery Module QTY* 2 3 4 5 6 7 8
6 Nominal Capacity(Ah) 200 300 400 500 600 700 800
7 Nominal Energy(kWh)*** 9.60 14.4 19.2 24.0 28.8 33.6 38.4
8 Voltage
Nominal(V) 48.0
Recommend
Charging(V) 52.5
Max.
Charging(V) 53.5
Discharge Cut-
off(V) 44.0
9 Current
Max.
Charging(A) 125 200 300 300 300 300 300
Max.
Discharging(A) 125 200 300 300 300 300 300
Peak for 10s(A) 175 250 350 350 350 350 350
10 Weight (Approx.) 230lbs 325lbs 420lbs 515lbs 610lbs 705lbs 800lbs
11 Dimensions
(H*W=29”*D=15.75”)
24.2” 29.4 35.2” 41” 46.8” 52.6” 58.4”
12 Communication RS485, CAN
13 Cycle Life 4000 times@80%DOD
14 Designed Calendar Life ≥10 years
15 Safety Function Over-charge, Over-discharge, Over-current, Low/High-temperature, Low-
voltage, Short-circuit Protections
16 Parallel Capability Maximum 10 Stacks (Recommended 6 Stacks)

Stack’d Series HOMEGRID Technical
Page 7 Chapter 2: Introduction
2.4. Equipment Interface Instruction
Figure 2.2.Main controller module positive
Figure 2.3. Interface definition of main controller module
No. Instructions No. Instructions
1 Address Dial Switch 8 Reserve
2 Inverter CAN /RS485communication port 9 Reserve
3 Reserve 10 Parallel communication port B
4 Inverter CAN communication port 11 Parallel communication port A
5 Inverter RS485communication port 12 Charge and discharge positive electrode
6 CAN upgrade communication port 13 Charge and discharge negative electrode
7 RS232 communication interface 14
No. Instructions NO. Instructions
1 Display screen 2 Power switch
3 Status code
8
9
10
11
4
5
6
7
2
3
1
12
13
1
2
3