NEC ALM 12V7 s-Series User manual

ALM®12V7 s-Series User’s Guide
End User Documentation
406014-02EN, Rev. 05
© 2016 NEC Energy Solutions, Inc. All rights reserved.
This document contains the proprietary information of
NEC Energy Solutions, Inc. and may not be reproduced,
retransmitted or redistributed, either in whole or in part, for
any reason without NEC Energy Solutions’ prior written
consent.
April 21, 2016 www.neces.com

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ALM®12V7 s-Series User’s Guide
Copyright Notice
© 2016 NEC Energy Solutions, Inc. All rights reserved.
DOCUMENT NOTICE
THE INFORMATION CONTAINED IN THIS MANUAL IS THE PROPERTY OF NEC ENERGY SOLUTIONS, INC.
(“NEC ENERGY SOLUTIONS”) AND IS SUBJECT TO CHANGE WITHOUT NOTICE. NEC ENERGY SOLUTIONS
RESERVES THE RIGHT TO MAKE CHANGES IN THE DESIGN OF ITS PRODUCTS OR COMPONENTS AS
PROGRESS IN ENGINEERING AND MANUFACTURING MAY WARRANT. IT IS THE CUSTOMER’S
RESPONSIBILITY TO SATISFY ITSELF AS TO WHETHER THE INFORMATION CONTAINED HEREIN IS
ADEQUATE AND SUFFICIENT FOR A USER'S PARTICULAR USE. IT IS THE FURTHER RESPONSIBILITY OF
EACH USER TO ENSURE THAT ALL APPLICATIONS OF NEC ENERGY SOLUTIONS' PRODUCTS ARE
APPROPRIATE AND SAFE BASED ON CONDITIONS ANTICIPATED OR ENCOUNTERED DURING USE.
CUSTOMER’S MISUSE OF THE PRODUCTS OR MODIFICATION OF THE PRODUCTS MAY LEAD TO
MALFUNCTION OF THE PRODUCTS THAT MAY CAUSE INJURY AND CUSTOMER ASSUMES ALL RISKS
ASSOCIATED WITH SUCH USE. THIS DOCUMENT DOES NOT CREATE ANY ADDITIONAL OBLIGATION FOR
NEC ENERGY SOLUTIONS AND DOES NOT CONSTITUTE ADDITIONAL WARRANTIES AND
REPRESENTATIONS.
Trademarks
NEC and the NEC logo are registered trademarks of NEC Corporation. ALM is a registered trademark and
EverSafe is a trademark of NEC Energy Solutions, Inc. A123 Systems and Nanophosphate are registered
trademarks of A123 Systems, LLC. All other trademarks used herein are the property of their respective owners.
Comments and Questions about this Documentation
Please call NEC Energy Solutions Technical Support at [phone] 
or contact by e-mail at [email protected]

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Contents
Preface .......................................................................................................7
About this Guide ............................................................................................................................. 7
Intended Users................................................................................................................................ 7
Conventions Used in this Guide ..................................................................................................... 7
Notes, Caution, Warning, and Danger Notices ........................................................................ 7
Chapter 1 Introducing the ALM®12V7 s-Series Batteries .................... 9
Overview ......................................................................................................................................... 9
ALM®12V7 s-Series Product Line................................................................................................ 10
Chapter 2 Regulatory Compliance ........................................................ 11
Overview ....................................................................................................................................... 11
Environmental Regulations ........................................................................................................... 12
Transporting Lithium-Ion Batteries................................................................................................ 12
Regulations Overview............................................................................................................. 13
Regulations by Cell/Battery Size ............................................................................................ 13
Following International and U.S. DOT Regulations ................................................................ 13
Chapter 3 Handling, Storage and Installation ...................................... 15
Safety and Handling...................................................................................................................... 15
Mounting ....................................................................................................................................... 16
Battery Configuration Options ...................................................................................................... 16
Wiring Connections ................................................................................................................ 16
Terminal Specifications........................................................................................................... 18
Configuring Batteries in Series Strings................................................................................... 18
Configuring Batteries in a Parallel Group (1S2P up to 4S10P)............................................... 19
Series and Parallel Battery Configuration Warnings and Notices .......................................... 19
Transportation and Storage .......................................................................................................... 21
Operating Environment ................................................................................................................. 21
Disposal ........................................................................................................................................ 22
Chapter 4 ALM®12V7 s-Series Specifications ..................................... 23
Electrical and Environmental Specifications ................................................................................. 23
Physical Specifications ................................................................................................................. 26
Chapter 5 Operation and System Design Considerations .................. 28
Integrated EverSafe™ Battery Protection..................................................................................... 28
Transient Energy Limit ............................................................................................................ 28
Over Current Protection .........................................................................................................28

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ALM®12V7 s-Series User’s Guide Contents
Over Discharge Protection Under Voltage Protection (UVP) .................................................. 29
Smart Charger Support .......................................................................................................... 30
Over Charge Protection..........................................................................................................30
Over Temperature Protection ................................................................................................. 30
High Temperature Operation .................................................................................................. 31
Low Temperature Operation ................................................................................................... 33
Charging Single Batteries ............................................................................................................. 33
Constant Current (CC), Float Voltage Chargers ..................................................................... 33
Charge Limits and Temperatures............................................................................................ 34
Charging Multiple Batteries........................................................................................................... 36
Charging Batteries in Series ................................................................................................... 36
Charging Batteries in Parallel ................................................................................................. 36
Discharge Performance ................................................................................................................ 38
Balancing ...................................................................................................................................... 41
Cycle Life ...................................................................................................................................... 41
Shelf Life ....................................................................................................................................... 42
Chapter 6 Troubleshooting ..................................................................... 44
Overview ....................................................................................................................................... 44
Appendix A Operational Protection Hardware Circuitry ..................... 46
Appendix B Acronyms and Terminology ............................................... 47
Related Documents and Resources ............................................................................................. 49

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Figures
Title Page
1 ALM 12V7 s-Series Battery................................................................................................ 9
2 ALM 12V7 s-Series Battery Block Diagram ..................................................................... 10
3 Three ALM 12V7 s-Series Batteries Connected in Series Creating a 3S1P 
Configuration ...................................................................................................................18
4 ALM 12V7 s-Series Mechanical Dimensions ................................................................... 27
5 Current Limit Profiles for the ALM 12V7s and ALM 12V7s HP Models ........................... 29
6 Battery Voltage and Current During Recharge ................................................................ 34
7 ALM 12V7 s-Series Typical Constant Current Discharge Behavior at 25 °C................... 38
8 ALM 12V7 s-Series Typical Constant Power Discharge Behavior at 25 °C..................... 39
9 ALM 12V7 s-Series Typical 50W Constant Power Discharge Behavior .......................... 40
10 Cycle Life versus Delta SOC Behavior of Nanophosphate® Lithium-Ion Cell................. 41
11 Cycle Life Test Results +1C/-1C, 23 °C, 100% DOD ...................................................... 42

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Tab le s
Title Page
1 ALM 12V s-Series Product Line Names UL Model Numbers .......................................... 12
2 Example of Steps to Obtain or Ensure Regulatory Compliance ..................................... 14
3 Proper Shipping Names and UN Numbers...................................................................... 14
4 ALM 12V7 s-Series Electrical Specifications ................................................................... 23
5 ALM 12V7 s-Series Environmental Specifications........................................................... 24
6 Spécifications Electriques de l' 12V7 s-Séries ALM ..................................................... 25
7 Spécifications Environnementales de l'12V7 s-Séries ALM......................................... 26
8 ALM 12V7 s-Series Physical and Mechanical Specifications.......................................... 26
9 ALM 12V7 s-Séries Caractéristiques Physiques et Mécaniques.................................. 27
10 End of Discharge – Effective ALM 12V7 s-Series Terminal Cut-Off Voltages in 
Different Series Configurations ........................................................................................ 30
11 Thermal Capability and Delta SOC, BOL ........................................................................ 31
12 Capacité Thermique et Delta État de Charge, Début de la Vie .................................. 32
13 Charge Rate by Temperature .......................................................................................... 35
14 Taux des frais par Température ................................................................................ 35
15 Supported Float and Maximum Charge Voltages............................................................ 36
16 Tension de Maintien et les Tensions Charge Maximale ............................................. 37
17 ALM12V7s HP Troubleshooting and Solutions................................................................ 45
18 ALM 12V7 s-Series Operational Protection Parameters.................................................. 46

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Preface
About this Guide
This ALM
®
12V7 s-Series User’s Guide provides detailed specifications for the 
ALM 12V7 s-Series batteries. It also provides guidance on safely and effectively configuring,
and operating ALM 12V7 s-Series batteries as building blocks in various applications.
Intended Users
This ALM
®
12V7 s-Series User’s Guide is intended for all personnel involved in designing,
configuring and installing ALM 12V7 s-Series batteries.
Conventions Used in this Guide
Notes, Caution, Warning, and Danger Notices
NOTE
A Notice presents information that is important, but not hazard-related.
REMARQUE
Un avis présente des informations importantes mais pas en rapport avec des situations
dangereuses.
CAUTION
A CAUTION notice identifies conditions or practices that could result in minor or
moderate injury, or damage to the equipment.
ATTENTION
Une MISE EN GARDE contient des informations essentielles pour éviter des dommages
au système ou à l'équipement. La mise en garde pourrait s'appliquer au matériel ou au
logiciel.

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ALM®12V7 s-Series User’s Guide Preface
WARNING
A WARNING notice contains information essential to avoid a hazard that can cause
severe personal injury, death, or substantial property damage if you ignore the
warning.
AVERTISSEMENT
Un AVERTISSEMENT contient des informations essentielles pour éviter un danger qui
peut causer des blessures corporelles graves, la mort ou des dommages matériels
importants si vous ignorez l'avertissement.
DANGER
A DANGER notice contains information essential to avoid a hazard that will cause
severe personal injury, death, or substantial property damage if you ignore the
message.
DANGER
Un avis de DANGER contient des informations essentielles pour éviter un danger qui
causera des blessures corporelles graves, la mort ou des dommages matériels
importants si vous ignorez le message.

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Chapter 1
Chapter 1: Introducing the ALM®12V7 s-Series Batteries
Introducing the ALM®12V7 s-Series Batteries
Overview
NEC Energy Solutions’ ALM 12V7 s-Series batteries are the next generation of the ALM 12V7
product line of lithium-ion batteries (Figure 1). ALM 12V7 s-Series batteries are designed as
drop‐in replacements for 12-volt, lead-acid batteries. They provide improved performance
with higher power, increased safety and exceptional calendar and cycle life compared to 
12-volt, lead-acid batteries. They typically serve as a standby power source in many 
high‐availability and service‐critical applications.
The ALM 12V7 s-Series batteries are identical in size to common 7Ah, 12-volt, lead-acid
batteries and designed to be compatible with most lead-acid chargers. This combination
reduces product integration costs, minimizes OEM customer’s time to market and
aftermarket customer replacement hurdles.
Figure 1 ALM 12V7 s-Series Battery

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ALM®12V7 s-Series User’s Guide Chapter 1: Introducing the ALM®12V7 s-Series Batteries
ALM®12V7 s-Series Product Line
The ALM 12V7 s-Series consists of the following models:
•TheALM 12V7s is a standard series, base power model. It can:
• Deliver 66 watts for one 1 hour
• Deliver 190 watts for 20 minutes
• Deliver up to 350 watts in one-second pulses
• Be fully charged (from 0 to 100%) in approximately 15 minutes
•TheALM 12V7s HP is a standard series, high power model. It can:
• Deliver 590 watts for six minutes
• Deliver up to 700 watts in one-second pulses
• Be fully charged (from 0 to 100%) in approximately 7 minutes
Each ALM 12V7 s-Series battery has integrated EverSafe™ protection and balancing circuitry
(Figure 2) that safeguard the battery from over‐voltage, under‐voltage, short-circuit and 
over‐temperature conditions. At the core of the ALM 12V7 s-Series are eight A123 Systems®
ANR26650M1B cells in a four‐series, two‐parallel (4S2P) configuration.
Figure 2 ALM 12V7 s-Series Battery Block Diagram

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Chapter 2
Chapter 2: Regulatory Compliance
Regulatory Compliance
Overview
ALM 12V7 s-Series batteries are compliant with, or tested to, the following regulatory
standards:
• UL 1973 Recognized – Batteries for use in Light Electric Rail (LER) Applications and
Stationary Applications.
• cUL Recognized to CAN/CSA C22.2 # 60950-1 – Information Technology Equipment
Safety - Part 1: General Requirements.
• IEC61000-6-1 (Generic standards – Immunity for residential, commercial and light-
industrial environments).
• IEC61000-6-2 (Generic standards – Immunity for industrial environments).
• IEC61000-6-3 (Generic standards – Emission standard for residential, commercial and
light-industrial environments).
• IEC61000-6-4 (Generic standards – Emission standard for industrial environments).
• IEC 62133 – Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Safety requirements for portable sealed secondary cells, and for batteries
made from them, for use in portable applications – tested and certified.
• CE – Recognized to EU consumer safety, health and environmental regulations. Signifies
conformity with EMC directive (2004/108/EC).
• FCC Part 15 Subpart B Class B – Standards regulating unintentional emissions of radio
frequencies from a digital device. This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may
cause undesired operation.
• CISPR 22 Information technology equipment – Radio disturbance characteristics - Limits
and methods of measurement
• EN55011 Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics limits and methods of measurement

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ALM®12V7 s-Series User’s Guide Chapter 2: Regulatory Compliance
• EN 55022 Information Technology Equipment – Radio Disturbance characteristics Limits
and methods of measurement
• VCCI Class B ITE emissions
• ICES-003 Information Technology Equipment (ITE) – Limits and Methods of Measurement
• UN 38.3 – Meets section 38.3 of the UN Recommendations on the Transport of
Dangerous Goods – Manual of Test Criteria.
Table 1 describes the ALM 12V7 s-Series product line and UL regulatory model number
conventions used for third-party certification.
Table 1 ALM 12V s-Series Product Line Names UL Model Numbers
Regulatory Model Numbers ALM 12V7 s-Series Battery Model Names
PSL000004 12V7s
PSL000005 12V7s HP
Environmental Regulations
ALM 12V7 s-Series batteries are compliant with the following applicable environmental
regulations.
• EU Directive 2011/65/EC on the Restriction of the use of certain Hazardous Substances
(RoHS) in electrical and electronic equipment (recast)
• EU Directive 2006/66/EC on batteries and accumulators and waste batteries and
accumulators
• EU Directive 1907/2006 on the Registration Evaluation Authorization and Restriction of
Chemicals (REACH)
• Management Methods for Controlling Pollution Caused by Electronic Information
Products Regulation (China RoHS)
Transporting Lithium-Ion Batteries
The material presented in this guide is not all-inclusive of the regulations required to ship a
product, but is meant to inform you of the complexity involved in doing so. The information
contained herein is for informational purposes only and is not legal advice or a substitute for
legal counsel.
Anyone involved in the integration of lithium-ion battery packs into a host product must
review and meet the regulations cited in this guide. Additionally, the regulations discussed in
this guide apply to lithium-ion cells and batteries. Once an ALM 12V7 s-Series battery is
integrated into a host product, the host product may be subject to additional transportation
regulations that require additional certification testing. Since NEC Energy Solutions can’t
anticipate every possible configuration and application of an ALM 12V7 s-Series battery, the

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integrator must verify that the ALM 12V7 s-Series-powered host product is compliant with all
applicable regulations. Refer to Table 3 on page 14 for a list of proper names and UN
numbers required for shipping lithium-ion batteries.
Regulations Overview
Rechargeable lithium-ion (including lithium-ion polymer) cells and batteries are considered
dangerous goods. The regulations that govern their transport are based on the UN
Recommendations on the Transport of Dangerous Goods Model Regulations. Transport of
dangerous goods is regulated internationally by:
• International Civil Aviation Organization (ICAO) Technical Instructions
• International Air Transport Association (IATA) Dangerous Goods Regulations
• International Maritime Dangerous Goods (IMDG) Code
In the United States, transportation of hazardous material is regulated by Title (part) 49 of the
Code of Federal Regulations or CFR’s. Title 49 CFR Sections 100-185 of the U.S. Hazardous
Materials Regulations (HMR) contains the requirements for transporting cells and batteries.
Refer to the following sections within 49 CFR for specific information.
• Section 173.185 – Shipping requirements for lithium cells and batteries
• Section 172.102 – Special Provisions
• Sections 172.101, 178 – Further information and specifications on packaging
The Office of Pipeline and Hazardous Materials Safety Administration (PHMSA), which is
within the U.S. Department of Transportation (DOT), is responsible for drafting and writing the
U.S. regulations that govern the transportation of hazardous materials (also known as
dangerous goods) by air, ground, and ocean.
Regulations by Cell/Battery Size
Lithium-ion batteries and cells are considered Class 9, which is one of nine classes of
hazardous materials or dangerous goods defined in the regulations. As a class 9 material,
cells and batteries must meet UN testing and packaging requirements as well as shipping
regulations.
Following International and U.S. DOT Regulations
Failure to comply with International and U.S. DOT regulations while transporting Class 9
Hazardous Materials (Dangerous Goods) may result in substantial civil and criminal penalties.

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ALM®12V7 s-Series User’s Guide Chapter 2: Regulatory Compliance
Table 2 outlines an example process to help ensure that batteries are shipped per the
required regulations.
Table 2 Example of Steps to Obtain or Ensure Regulatory Compliance
Step Number Process step Comments
1Design the battery pack. Design the battery pack to ensure it will pass UN Manual of Tests and
Criteria.
2A
Ship the battery pack to a UN
38.3 test house if using an
outside test laboratory.
Use the “Prototype” shipping special provisions provided in the regulations.
2B Test the battery pack. Perform UN testing T1-T5, & T7 for batteries.
3Obtain UN compliant packaging. All Class 9 Dangerous Goods (DG) must be shipped in UN compliant
packaging.a
a. U.S. and international regulations require that anyone involved in the packaging, documentation, and labeling of Dangerous Goods for
transportation must be trained to do so.
4Package the cell or battery. Pack per regulations and per packaging manufacturer's instructions.
5Mark and label the package. Insure that packaging container has all the required labeling. Table 3 lists
proper shipping names and descriptions for lithium-ion batteries.a
6Fill out the shipping
documentation. Complete shipper's declaration for dangerous goods, airway bill, etc. a
7Ship the package.
Ensure that shipping company can ship dangerous goods and that a Safety
Data Sheet (or equivalent document) and any Competent Authority Approval
accompanies the package. a
NOTE
Table 3 shows the proper shipping names and UN numbers required for shipping lithium-ion
batteries.
Table 3 Proper Shipping Names and UN Numbers
Proper Shipping Name Description
Lithium ion batteries UN 3480
Lithium ion batteries packed with equipment UN 3481
Lithium ion batteries contained in equipment UN 3481

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Chapter 3
Chapter 3: Handling, Storage and Installation
Handling, Storage and Installation
Safety and Handling
ALM 12V7 s-Series batteries are more abuse tolerant than other lithium-ion batteries;
however, correct handling and system integration of ALM 12V7 s-Series batteries are still
important to ensure safe operation.
WARNING
Failure to follow these warnings may result in personal injury or damage to the
equipment.
• Do not expose the ALM 12V7 s-Series battery to heat in excess of 60°C during
operation or in storage; do not incinerate or expose to open flames.
• Do not connect ALM 12V7 s-Series batteries to batteries of other chemistries or
ALM batteries of different capacities. For example, do not connect an 
ALM 12V7 s-Series battery to any lead‐acid battery or to an ALM 12V35.
CAUTION
Do not charge or discharge an ALM 12V7 s-Series battery outside of its stated
operating temperature range. Reduce charging limits for lower operating
temperatures for longer life of the batteries.
AVERTISSEMENT
Ne pas suivre ces avertissements peut entraîner des blessures ou des dommages a
l’équipement.
• Ne pas exposer les batteries ALM 12V7 s-Séries à une chaleur dépassant les 60°C
pendant son fonctionnement ou son entreposage; ne pas l'incinérer ou l'exposer à des
flammes nues.
• Ne pas connecter les batteries ALM 12V7 s-Séries avec des batteries d'autres
compositions chimiques ou avec des batteries ALM de différentes capacités. Par
exemple, ne pas connecter une batterie 12V7 s-Séries avec une batterie
d'accumulateurs au plomb ou avec une batterie ALM 12V35.

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ALM®12V7 s-Series User’s Guide Chapter 3: Handling, Storage and Installation
ATTENTION
Ne pas charger ou décharger la batterie ALM 12V7 s-Séries en dehors de sa plage de
température fonctionnelle indiquée. Réduire les limites de chargement pour les
températures fonctionnelles plus basses pour la durée de vie des batteries.
The advanced design of the ALM 12V7 s-Series is intended to provide protection against
operation under many unsafe conditions such as over voltage, under voltage, over
temperature and short circuit. Proper use within the limits stated in Chapter 4, 
ALM®12V7 s-Series Specifications, starting on page 23, is required to ensure operator and
equipment safety as well as battery life.
Mounting
The ALM 12V7 s-Series batteries may be installed in any orientation.
The ALM 12V7 s-Series battery case, including its top cover is capable of sustaining a
mounting force of up to 200 Newtons spread over a one-inch-wide (2.5 cm-wide) bar or
holding bracket across the center of the unit. Exertions beyond this level may result in
deforming of the plastic.
Montage
Les batteries de 12V7 s-Séries ALM peut être installé dans n'importe quelle direction.
Le boîtier de la batterie ALM 12V7 s-Séries, y compris le couvercle supérieur, peut soutenir
une charge allant jusqu'à 200 Newtons répartie sur une barre d'un pouce (2,5 cm) de largeur
ou sur une équerre de fixation traversant le centre de l'unité. Des efforts plus grands peuvent
provoquer une déformation de la matière plastique.
Battery Configuration Options
ALM 12V7 s-Series batteries may be arranged in series and/or in parallel configurations to
achieve higher operating voltages and capacities to meet the requirements of the intended
application, up to a maximum of 48 volts (four in series) and 50 Ah (ten in parallel).
Wiring Connections
To connect ALM 12V7 s-Series batteries, use appropriate sized AWG wire and connectors
that are rated for the maximum current and temperature expected. Table 11, on page 31,
provides guidance on the conditions under which the battery may encounter internal thermal
or external terminal touch temperature limits.
The battery can accommodate a maximum inductance of 5 μH. For reference, 5 μH is
equivalent to 3 meters (10 feet) of individual standalone cable. In a battery system, cable

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length inductance includes all terminal-to-terminal connections as well as cabling to charge
sources and load for both the positive and negative conductors added together. It is possible
to reduce a battery system’s total cable inductance by orienting positive and negative
conductors to cancel each other’s electromagnetic induction, thus allowing for longer total
cable length. Contact NEC Energy Solutions Technical Support for assistance in determining
appropriate wiring and bus bar configurations to address current sharing and stray
inductance requirements.
CAUTION
• Exceeding the maximum inductance limit of 5 μH during operation could cause
voltage spikes or current surges resulting in possible damage to the 
ALM 12V7 s-Series battery’s circuitry.
• Do not connect the ALM 12V7 s-Series to an inductive load such as a DC motor
without the use of a motor controller. An “on-off” switch does not constitute a
motor controller. Using the batteries directly with DC motors can permanently
damage the battery. Contact NEC Energy Solutions Technical Support for further
assistance.
Connexions de Câblage
Pour connecter les batteries ALM 12V7 s-Séries, utilisez un câble AWG de la bonne taille et les
tenons classifiés pour le courant et la température maximum prévus. Tableau 12 à la page 32
fournit des directives sur les conditions dans lesquelles la batterie pourrait dépasser les limites
de température de contact de borne externe ou thermique interne.
La batterie peut accepter une inductance maximum de 5 µH. Comme référence, 5 µH est
équivalent à 3 mètres (10 pieds) de câble autonome individuel. Dans un système de batterie,
la longueur du câble inducteur comprend toutes les connexions de borne à borne, ainsi que le
câblage pour recharger les sources et les charges pour les conducteurs positif et négatif
combinés. Il est possible de réduire l'inductance totale de câble d'un système de batterie en
orientant les conducteurs positif et négatif pour annuler mutuellement l'induction
électromagnétique, permettant ainsi une plus grande longueur de câble totale. Contactez le
support technique de NEC Energy Solutions pour vous aider à déterminer les configurations de
câblage et de barres omnibus appropriées pour traiter le partage de courant et les exigences
d'inductance parasite.
ATTENTION
• Le dépassement de la limite d’inductance maximale en fonctionnement de 5 µH
pourrait causer des pointes de tension ou de courant et causer des dommages aux
circuits de la batterie ALM 12V7 s-Séries.
• Ne branchez pas la batterie ALM 12V7 s-Séries à une charge inductive, telle qu’un
moteur à courant continu, sans l’utilisation d’un dispositif de commande de moteur. Un
interrupteur « marche-arrêt » ne constitue pas un dispositif de commande de moteur.
L’utilisation des batteries directement avec les moteurs à courant continu peut
endommager définitivement celles-ci. Contactez l’assistance technique de
NEC Energy Solutions pour obtenir de l’aide.

406014-02EN, Rev. 05 © 2016 NEC Energy Solutions, Inc. All rights reserved. Page 18 of 49
This document contains the proprietary information of NEC Energy Solutions, Inc. (“NECES”) and may not be modified,
reproduced, retransmitted or redistributed, either in whole or in part, for any reason without NECES’ prior written consent.
ALM®12V7 s-Series User’s Guide Chapter 3: Handling, Storage and Installation
Terminal Specifications
ALM 12V7 s-Series batteries use copper terminals with tin plating. The terminals have a
maximum operating temperature rating of 90 °C. They are intended to mate with standard
female 0.25 inch (6,35 cm) “quick connect” terminals (TE Connectivity FASTON or
equivalent). Attach cable by inserting connector fully until the round locking detent has
engaged the center hole.
Configuring Batteries in Series Strings
To achieve higher operating voltages, arrange the ALM 12V7 s-Series batteries in series
strings by connecting the positive terminal of one battery to the negative terminal of the next
battery, as shown in Figure 3.
NOTE
The following battery string wiring examples provide general configuration information. Actual wire
configurations must be evaluated for their particular application.
The array voltage can be calculated as follows:
• Two batteries in series: 2 x 13.2 V = 26.4 V (nominal) for 24 V applications
• Three batteries in series: 3 x 13.2 V = 39.6 V (nominal) for 36 V applications
• Four batteries in series: 4 x 13.2 V = 52.8 V (nominal) for 48 V applications
The maximum number of ALM 12V7 s-Series batteries that may be connected in series is
four.
Figure 3 illustrates three ALM 12V7 s-Series batteries connected in a three-series, one-
parallel (3S1P) configuration.
Figure 3 Three ALM 12V7 s-Series Batteries Connected in Series Creating a 3S1P Configuration

ALM®12V7 s-Series User’s Guide Chapter 3: Handling, Storage and Installation
406014-02EN, Rev. 05 © 2016 NEC Energy Solutions, Inc. All rights reserved. Page 19 of 49
This document contains the proprietary information of NEC Energy Solutions, Inc. (“NECES”) and may not be modified,
reproduced, retransmitted or redistributed, either in whole or in part, for any reason without NECES’ prior written consent.
Configuring Batteries in a Parallel Group (1S2P up to 4S10P)
To achieve higher capacity, arrange the batteries in a single series (1S) parallel group by
connecting all like‐polarity wires on adjacent batteries to an appropriately sized terminal
block for your application. To ensure even loading, make two star connections; one for the
positive battery terminals and one for the negative battery terminals. The cable lengths in
each star group should be of approximately equal measure as permitted by the physical
layout. From each star connection, use a twisted pair of cables to the load.
Reference local electrical codes and/or relevant standards for terminal block specifications.
Bus bar connections are recommended for current exceeding 400 amps.
The nominal capacity for the parallel group can be calculated by multiplying the number of
batteries in the group by 5 Ah. For example, three batteries in parallel provides: 
3 x 5 Ah = 15 Ah.
The maximum number of ALM 12V7 s-Series batteries that may be connected in parallel is
ten.
Series and Parallel Battery Configuration Warnings and Notices
WARNING
When configuring the ALM 12V7 s-Series batteries in series or in parallel, adhere to
the following Warning notices:
• Do not connect more than four batteries in series. Connecting more than four
batteries in series may damage the battery’s circuitry, leaving the battery without
critical safety features such as over‐voltage and over‐temperature protection.
• Do not connect more than ten batteries in parallel.
• Configuring more than one series string of batteries in parallel is allowed under
certain circumstances. The maximum supported array is 4S10P. When designing
and constructing any series-parallel battery combinations, contact NEC Energy
Solutions Technical Support for assistance in determining appropriate wiring and
bus bar configurations to address current sharing and stray inductance
requirements.
• Consider inductance during system design. An ALM 12V7 s-Series battery can
accommodate a maximum inductance of 5 μH. Exceeding this limit during
operation will cause voltage or current spikes, resulting in possible damage to the
battery’s circuitry.
• Consider capacitance during system design. When a battery or battery group is
connected to a heavy duty charger, external capacitance may need to be added to
the circuity to address the output inductance of the charger. The CV2of the
attached capacitor should be larger than the LI2of the charger. The charger
inductance is the sum of the internal and external inductances.

406014-02EN, Rev. 05 © 2016 NEC Energy Solutions, Inc. All rights reserved. Page 20 of 49
This document contains the proprietary information of NEC Energy Solutions, Inc. (“NECES”) and may not be modified,
reproduced, retransmitted or redistributed, either in whole or in part, for any reason without NECES’ prior written consent.
ALM®12V7 s-Series User’s Guide Chapter 3: Handling, Storage and Installation
NOTE
The ALM 12V7 s-Series is UL Recognized as a standalone battery only and has not been evaluated
by UL (or any other regulatory agency) for series and/or parallel configuration.
NEC Energy Solutions has successfully conducted noncertification testing witnessed by UL on multi-
battery arrays in series/parallel configurations. It remains the end users responsibility to certify their own
unique solution.
AVERTISSEMENT
Lors de la configuration des batteries en série ou parallèle, adhérer aux règles suivantes:
• Ne pas connecter plus de quatre batteries en série. La connexion de plus de quatre
batteries en série dépasse la limite de tension électrique de la circuiterie de protection
intégrée, laissant la batterie sans fonctionnalités de sécurité cruciales comme la
protection contre la surtension et la surchauffe.
• Ne connectez pas plus de dix batteries ou chaînes de batteries en parallèle.
• La configuration de plusieurs chaînes de batteries en parallèle est autorisée dans
certaines circonstances. Le réseau maximum supporté est 4S10P. Lors de la conception
et la construction de toutes les combinaisons de batteries série-parallèle, contactez NEC
Energy Solutions Support Technique pour vous aider à déterminer les configurations de
câblage et de barres omnibus appropriés pour traiter le partage de courant et les
exigences d inductance parasite.
• Envisager l'inductance lors de la conception du système. La batterie ALM 12V7 s-Séries
peut supporter une inductance maximum de 5 uH. Le dépassement de cette limite en
fonctionnement provoque des pointes de tension ou de courant, pouvant entraîner des
dommages aux circuits de la batterie.
• Envisager la capacité (Farads) lors de la conception du système. Quand un groupe de
batteries ou une batterie sont connectés à un chargeur de puissance élevée, il peut être
nécessaire d' ajouter à la circuiterie une capacité externe pour compenser l'inductance
de sortie du chargeur. Le CV2du condensateur CV doit être plus grande que la LI2du
chargeur. L'inductance de charge est la somme des inductances internes et externes.
REMARQUE
La batterie ALM 12V7 s-Séries est homologuée UL comme batterie autonome seulement et n'a pas
été évaluée par l'UL (ou tout autre organisme réglementaire) pour des configurations en série et/ou
parallèles.


NEC Energy Solutions a mené avec succès des tests non-accrédités vérifiés par UL sur plusieurs
gammes de batteries en configuration en série et/ou parallèle. Il est de la responsabilité de
l'utilisateur final de certifier leur propre solution.