Apex Digital B12K User manual

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B12K
11.7KWH 51.2V
12KWH Lithium Battery
Lithium-Ion Energy storage for residential and light
commercial applications.
• Ideal for urban use in on or off-grid applications.
• Monitor and control your Apex B12K on any
compatible browser.
• Compact and energy dense.
• State of the art BMS for cell and system
managment.
The APEX B12k Lithium Ion Battery is designed for use in
demanding on and off grid applications. The stylish
design, colorful display and small footprint make it at
home in any setting. Designed with as top
priority, the BMS manages all aspects of the device,
including temperature, current, multiple voltages and
more. Making use of APEX’s renowned FET Block
technology, the B12k’s robust protetion systems can
connect and disconnect the battery from loads or
supplies when it needs to with reliability and safety.
Technical Manual

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B12K Battery - Technical Manual
1.1 Contents Of The Box
1.2 Device Documentation
1.3 About This Manual
1. Introduction
3.1 Symbols
3.2 Purpose
3.3 Transport Damage Check
3.4 Sta
3.5 Special Hazards
3.6 Installation Place
3.7 Alterations
3.8 Cleaning And Maintenance
3.9 General Hazards Resulting From
Non-Compliance With Safety
Standards
3.10 General Safety Requirements
3.11 Local Requirements
3.12 Other Considerations
3.13 Lithium Battery Safety
4.1 Overview And Description
4.2 Electrical Interfaces
4.3 Identication
5.1 Safety And Important Install Info
5.2 Installation Of The B12K
5.3 Electrical Installation
6.1 Commissioning
6.2 Communication Connections
6.3 LCD Display
6.4 Default Settings
6.5 Date And Time
6.6 Pre-Charge
6.7 Startup
6.8 Reports And Logs
6.9 Fault Finding
6.10 Other Errors
6.11 Service, Support And Repairs
6.12 Warranty
7.1 App Introduction
7.1.1 Web App And Remote Access
7.2 Installer’s Remote Monitoring
7.2.1 Enrolling A Device
7.2.2 Inviting A User
7.3 User’s Remote Monitoring
2. Technical Specications
3. Safety Instructions
4. Device Description
5. Installation
6. Commissioning & Operation
7. Mobile Applications & Wi-Fi
Connectivity
8. Contact Us
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B12K Battery - Technical Manual
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Inside the box you should find:
• 1 x Apex B12K battery
The APEX B12K Lithium-Ion battery is designed for use in demanding on and off-grid applications.
The stylish design, colorful display and small footprint make it at home in any setting. Designed with
safety as top priority, the BMS manages all aspects of the device, including temperature, current, multiple
voltages and more. Making use of APEX’s renowned FET Block technology, the B12k’s robust protection
systems can connect and disconnect the battery from loads or supplies when it needs to with reliability
and safety.
Apex B12K documentation includes this manual, its datasheet and the warranty terms.
All latest version documents can be downloaded from www.ApexSolar.Tech
This manual describes the correct use and features of the Apex B12K battery. It includes technical data
as well as user instructions and specifications to provide information about its correct functioning.
This document is subject to regular updates.
The contents of this manual might change
partially or completely, and it is the responsibility of the user to make sure that they are using the latest
version which is available at
www.ApexSolar.Tech.
Apex reserves the right to modify the manual without prior notice.
1.1 CONTENTS OF THE BOX
1.2 DEVICE DOCUMENTATION
1.3 ABOUT THIS MANUAL
Lithium-Ion Energy storage for residential and light commercial applications.
• Ideal for urban use in on or off-grid applications.
• Monitor and control your Apex B12K on any compatible browser.
• Compact and energy dense.
• State of the art BMS for cell and system management.
1. INTRODUCTION

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GENERAL PARAMETERS
Nominal Voltage 51.2V DC
Total Capacity (When New) 11.7kWH
Available Capacity (When New) > 11kWH
Maximum Charge Current 230A
Maximum Discharge Current 230A
Max. Charge C-Rate: 1C
Max. Discharge C-Rate: 1C
DC Connection 2 x M10 brass stud terminals
Storage SoC 30 – 50%
Transportation SoC 30 – 50%
Chemistry LFP
Life Expectancy > 7000 cycles @ 1C, 90% DOD, 25°C
Performance Warranty > 6000 cycles @ 1C, 90% DOD, 25°C, min 70% SOH
10 Years
Parameter Specication
COMMUNICATIONS
Network Connection 1 x Ethernet, RJ45
CAN Connections 2 x RJ45 (2 separate busses)
Remote Updates (Firmware Over The Air) Ability to update firmware remotely
MECHANICAL SPECIFICATIONS
Dimensions (Length X Breadth X Depth) 450mm x 730mm x 220mm
Cooling Natural Convection
Weight 100kg
Ingress Protection IP20
Terminal Access Removable cover
INSTALLATION SPECIFICATIONS
Mounting Vertical only
Enviroment Indoor use only. Not for outdoor installation.
Method Floor standing only
ENVIRONMENTAL CONDITIONS
Maximum Permissable Ambient Temperature Range 0°C to +45°C
Relative Humidity 0 % - 80% non-condensing
Operating Altitude 0...2000m
2. TECHNICAL SPECIFICATIONS

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DEVICE SAFETY FEATURES
Device Over-Temperature Shutdown BMS over temperature and cell overtemperature
Cell Over And Under Voltage Protection Yes
Overcurrent Protection Software, Fuse
Parameter Specication
USER INTERFACE
On Device Color LCD
Remote Interface Web browser
Please read and follow all the below safety instructions and precautions before installation and use of the
Apex B12K battery.
3. SAFETY INSTRUCTIONS
3.1 SYMBOLS
The following symbols are used in this manual to highlight and emphasize important information.
The general meanings of the symbols used in the manual, and those present on the device, are as follows:
General Caution
General Electrical Hazard
Information
Prohibited
Direct Current
Reinforced Insulation
3.2 PURPOSE
These safety instructions are intended to highlight risks and dangers of improper installation, commissioning and use of
the B12K battery.
3.3 TRANSPORT DAMAGE CHECK
Immediately after receiving the package, make sure that the packaging and the device have no signs of damage. If the
packaging shows any sign of damage or impact, damage of the B12K should be suspected and it should not be
installed.
If this occurs, please contact Apex customer service.

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3.4 STAFF
This system should be installed, handled and replaced solely by qualified personnel. Qualification of the staff men-
tioned herein must meet all the safety-related standards, regulations and legislation applicable to the installation
and operation of this system in the country concerned.
The responsibility to select qualified staff lies with the company that the staff work for. It is also the responsibility
of the company to assess the ability of the worker to carry out any kind of work and ensure their safety. Staff
must comply with workplace health and safety regulations. It is the responsibility of the company to provide their
staff with the training necessary for handling electrical devices and to make sure that they familiarize themselves
with the contents of this user manual.
3.5 SPECIAL HAZARDS
The Apex B12K is designed to form part of a domestic electrical installation. Applicable safety measures must be
observed, and any additional safety requirements should be specified by the company who has installed or
configured the system.
Dangerous voltages may be present in the system and any physical contact could cause serious injury or death.
Please ensure that all covers are securely fastened and that only qualified staff service the Apex B12K. Ensure
that the system is switched off or disconnected during handling.
3.6 INSTALLATION LOCATION
The Apex B12K may only be installed indoors, placed onto a firm surface and be protected from water, excessive
dust, corrosion and humidity. It should never be installed in any location where a potential water leak could occur.
See section 5 for detailed installation information.
3.7 ALTERATIONS
It is strictly prohibited to carry out any alteration or modification to the Apex B12K or any of its accessories.
3.8 CLEANING AND MAINTENANCE
Cleaning and maintenance should only be carried out with the Apex B12K disconnected from the load and charger.
Before taking any action, make sure that the system has been correctly isolated by opening the electrical isolators
or fuse protection. To clean the B12K, wipe the exteriorsurface with a damp (not wet) soft, non-abrasive cloth.
Pay attention to the cooling slots and any dust build-up thereon which may affect the ability of the B12K to
dissipate heat generated.
Do not try to repair the device yourself in case of any malfunction. If the need arises, contact Apex customer
service. The system does not require any special maintenance, except for standard physical cleaning to ensure
good air flow and the maintenance required by any electrical device connected with screws and terminals that
need to be tightened.
3.9 GENERAL HAZARDS RESULTING FROM NON-COMPLIANCE WITH SAFETY STANDARDS
The technology employed in the manufacturing of the Apex B12K ensures safe handling and operation.
Nonetheless, the system might pose hazards if it is used by unqualified staff or handled in a way that is not
specified in this user manual.
Any person in charge of the installation, commissioning, maintenance, or replacement of an Apex B12K must first
read and understand this user manual, especially the safety recommendations and shall be trained to do so.

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Operator
The person in charge of handling the electrical device is responsible for the safety of persons and property.
Insulate all the system’s power conducting components which could cause injuries while carrying out the work.
Confirm that dangerous areas are clearly marked and access is restricted.
Avoid accidental re-connection of the system using signs, isolating locks and closing or blocking the work site.
Accidental reconnection may cause serious injuries or death.
Determine conclusively, using a voltmeter, that there is no voltage in the system before commencing work.
Check all the terminals to make sure that there is no voltage in the system.
3.11 LOCAL REQUIREMENTS
In all cases, local regulations shall be followed and take preference over this manual or other documents related to
the Apex B12K. No part of this manual shall supersede any local laws, bylaws or other regulations. These include
but are not limited to: earthing, installation rules, local electrical isolation requirements and so on.
3.12 OTHER CONSIDERATIONS
This device is exclusively designed to store energy provided by either the grid, a solar array or both via appropri-
ate, approved charging devices or inverters and is to be installed in a domestic or light commercial setting.
The Apex B12K should only be used for this purpose. Apex is not liable for any damages caused by inappropriate
installation, use or maintenance of the system.
To ensure safe use, the Apex B12K must only be used in compliance with the instructions in this manual.
Legal and safety regulations must also be adhered to, to ensure correct use.
3.13 LITHIUM BATTERY SAFETY
This battery is built using high quality Lithium Iron Phosphate cells. This is a very stable and safe chemistry and
the cells have multiple integrated safety mechanisms. All batteries have risks associated with them due to the
energy stored within them. However, this table shows the results of tests of the behavior of these cells when
intentionally exposed to abnormal conditions.
DEVICE SAFETY FEATURES
Over Discharge No explosion, no fire, no leakage
Over Charge No explosion, no fire
Short Circuit No explosion, no fire
Drop Test No explosion, no fire, no leakage
Heating No explosion, no fire
Extrusion No explosion, no fire
Seawater Immersion No explosion, no fire
Temperature Cycling No explosion, no fire, no leakage
Low Pressure No explosion, no fire, no leakage
Thermal Runaway No explosion, no fire
Scenario Behavior
Note: APEX stresses that these are controlled tests and should not be repeated. These conditions and behaviors
are not in any way warranted but are provided as an indication of general safety mechanisms built into the cells.
3.10 GENERAL SAFETY REQUIREMENTS

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Figure 2 : Front Of Battery
4. DEVICE DESCRIPTION
4.1 OVERVIEW AND DESCRIPTION
The terminal chamber cover should only be removed by electricians and accredited installers who have correctly
isolated the system as described in the “Installation” section of this manual.
4.2 ELECTRICAL INTERFACES
The B12K has 4 electrical interfaces:
Main Power Terminals:
2 10mm studs are the main power carrying electrical Interface to the load and charger / inverter. This interface is
designed to supply or receive power at a maximum rate of 1C or 230A, and at a nominal voltage of 52V.
CAN Bus:
The battery is fitted with 2 CAN interfaces and is designed to communicate with its charge controller / load /
inverter via CAN bus. This allows the battery to control the charge and discharge rates and share various param-
eters such as state of charge with other equipment. The last battery will be connected to the inverter with the
“OUT” port. In the case where more than one battery is connected in parallel, they are connected on a CAN bus for
the purposes of aggregation of communication with the load / charger.
Network:
The Apex B12K can connect to a standard 100 base-T Ethernet network for remote access and monitoring using
an RJ45 connector. The network requires transparent internet connectivity and a DHCP server.

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4.3 IDENTIFICATION
The B12K is shown in Figure 2. Each B12K is uniquely identified by its serial number which is placed on the product
label, on the side of the device.
5. INSTALLATION
5.1 SAFETY AND IMPORTANT INSTALL INFO
As the B12K is installed into a building’s electrical infrastructure, it is necessary to ensure that the installation area
is secured and safe before beginning the installation.
The B12K may not be mounted horizontally or at an oblique angle. It must be mounted with the terminal chamber
at the top of the font cover (ie: correctly rotated).
The B12K may not be installed within a ceiling or roof cavity.
5.2 INSTALLATION OF THE B12K
To begin your B12K installation, locate a suitable position for it which fulfils all of the following criteria:
The B12K shall be installed with all the relevant electrical protection and isolation.
DC over-current protection and local isolation is required – a fuse disconnector is recommended.
• A firm, even floor surface.
• A location that is fully indoors.
• Free from excessive dust and moisture.
• Free from external heat sources.
• Has free airflow and at least 300mm clearance all around.
• Is not subjected to heat generated by another device.
(eg: near a cooker or directly adjacent to another heat source)
• It may not be mounted inside a cupboard or other place
without free air flow.
Figure 3. B12K Typical Installation,
Connected With A Fuse Disconnector

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5.3 ELECTRICAL INSTALLATION
NEW INSTALLATIONS
DC Supply To The B12K
Connect the inverter with a cable having a cross section suitable for carrying 230A or more to the B12K, via the
external fuse protection. This cable carries high current and care should be taken in sizing it as well as all crimps
and terminations. It is important that the nuts on the B12K’s M10 terminals are fully tightened to 21nM.
Internet Communications
The device can be remotely monitored and managed by making use of the included internet monitoring service.
To use the service, connect the battery to an internet connected network with a standard Ethernet patch cable.
CAN Communications
2 separate CAN communications busses are integrated into the battery. These busses have 2 primary purposes:
• Connecting a B12K battery to the inverter.
• Connecting multiple batteries to each other to aggregate communications to the inverter.
To establish communications to the inverter:
1) Ensure that the inverter is on the verified compatible list.
2) Connect the inverter to the OUT port using the correct cable for your equipment. See pinout below.
Note: It is not necessary to terminate the battery end of the bus with a termination resistor, as it is done for you.
However, depending on the inverter used, it may be necessary to terminate the bus on that end of the cable.
Position Number
8-Wire RJ45
To establish communications between batteries:
1) Connect the OUT port of the first battery to the IN port
of the next, using a standard premade Ethernet patch
cables. See pinout below for use in the case that you
need to manufacture your own.
Note: It is not necessary to terminate either of the battery
CAN busses with a termination resistor, as it is done for you.