Publication No: EN-GPL-SG-003 - November 2008
SELECTION
GUIDE
FIFTH EDITION
RESERVE
POWER
2
GENESIS
®
Selection Guide
Publication No: EN-GPL-SG-003 - November 2008
www.enersys-emea.com
EnerSys®is the world’s largest industrial battery manufacturer with
manufacturing and assembly plants located around the world, over
7,000 employees, and a worldwide sales and distribution network.
A leader in both valve-regulated and flooded lead acid battery
technologies, EnerSys is a major supplier to telecommunications,
uninterrupted power supply (UPS), data processing, electronic,
defence, aviation, and material handling markets across the globe.
EnerSys operates several of the first lead acid battery plants in the
United States to receive the ISO 9001 certificates of registration,
covering the company’s product design, manufacturing, assembly,
and customer service functions.
ISO 9001 certification, covering 20 key elements, assures customers
that EnerSys has fully documented and implemented manufacturing
and quality systems that are consistently followed.
EnerSys’ environmentally progressive Warrensburg, Missouri plant,
home base of the GENESIS®product lines, covers 320,000 square feet
on 33 acres and employs more than 400 people. EnerSys was the first
battery company in the United States to receive ISO 14001
certification. ISO 14001 focuses on the environmental management
system of the business and provides a systematic approach to
resource conservation.
EnerSys supports its customers through global field sales offices and
a select network of authorised Value Added Centres and international
representatives and distributors. EnerSys offers technical support and
customer service unparalleled in the industry. Additionally, the sales
and support team is committed to meeting and exceeding the
individual needs of each customer.
EnerSys’ Warrensburg plant covers 320,000
square feet and is situated on 33 acres
TABLE OF CONTENTS
Company background
EnerSys®2
Services and applications 3
Features and benefits 4
Technical information
Capacity as a function of
temperature 5
State of charge 6
Storage time as a function of
temperature 6
Voltage regulations 6
Charging recommendations 6
GENESIS®Batteries
GENESIS®product family 7
EP performance specifications 8
EP mechanical specifications 8
70EP performance specifications 9
70EP mechanical specifications 9
GENESIS constant current (CC)
and constant power (CP)
discharge graphs 10
Quick reference list
Standard product listing 11
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Publication No: EN-GPL-SG-003 - November 2008
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Value-Added Services
In addition to our manufacturing capability,
EnerSys®is proud to provide its customers with the
following services:
customised manufacturing design
battery recycling
on-line Internet technical information
charging support
product testing
on-site technical seminars
battery samples
application engineering
technical documentation
Applications
Batteries from EnerSys’ “pure lead-tin” family are
used in a wide variety of standby and
portable/cyclic applications including those in:
telecommunications
electronics
uninterruptible power supplies
defence installations
computer back-up
electric vehicles
medical equipment
solar power
lawn and garden equipment
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Features and Benefits
Sealed pure-lead cells were invented by a predecessor
company of EnerSys®in 1973. The purity of the materials
used is key to supporting the GENESIS®battery’s
performance benefits. A longer service life, meaning
fewer replacements and the cost associated with it,
combined with higher reliability and fewer system
failures, result in a lower long-term cost of ownership to
the end user or equipment owner.
What are the advantages of EnerSys technology?
1. Power density - Per unit weight, the power provided by
pure lead-tin products offers the greatest high-rate
power density for your energy dollar. GENESIS’ greater
volumetric power allows engineers to consider more
energy-supporting features or design smaller, lighter
packages.
At high-rate and pulse discharges, EnerSys’ GENESIS
products offer the best performance value when
compared with competitive product in applications at
less than 100 minutes of discharge.
2. Cycle life - Compared to competitive lead products
(offering up to 200 full cycles), pure lead-tin batteries
provide 50% to 200% greater full cycle capability.
GENESIS product will deliver up to 400 cycles (80%
DOD, C/5). And, because GENESIS incorporates a high
vent-pressure design, EnerSys’ products experience no
“dry out” failure mode from repeated recharges.
3. Float life - Conventional sealed-lead batteries vary
greatly in specified standby life: from three to six years
at 20°C, C/20. GENESIS, however, offer a ten-year
design life at 25°C, C/5, to 80% of rated capacity.
At 20°C, GENESIS Single Cells offer a fifteen-year
design life.
4. High stable voltage delivery - The high stable voltage
delivery of a pure lead-tin battery results from its low
internal resistance. The flat discharge voltage profile of
our batteries, similar to nickel cadmium, combined
with our products’ low internal resistance, means our
batteries are able to discharge and recharge their
power more quickly and efficiently and offer greater
application flexibility. The pure lead-tin construction
also gives more watts-per-unit weight at high
discharge rates.
5. Widest temperature range - Due to the product’s
strong construction and high vent pressures, these
batteries will maintain their performance and physical
parameters in extreme conditions. At high
temperatures, the chemical reaction in a battery that
causes aging is accelerated. Pure lead-tin technology
resists that chemical reaction more effectively than
alloyed lead, thus allowing a battery to have a longer
service life. At high temperatures, when conventional
lead batteries experience internal moisture loss from
venting and case side wall distention, the GENESIS,
with its steel can (metal jacket) and high venting
pressure, does not experience these life-robbing
conditions. GENESIS has twice the delivered capacity
of conventional sealed-lead batteries at temperatures
below -20°C, offering unparalleled low-temperature
performance.
GENESIS electrodes are thinner, allowing more
electrodes per cell, and therefore greater electrode
surface area than conventional sealed-lead, thick
electrode batteries. As a result, our batteries can reach
a high state of charge in fast-charging applications in
one-fourth the time of conventional, sealed-lead, thick-
plate batteries. This is 50% to 100% overall better
performance for your energy dollar.
6. Rugged construction - Due to their strong external
packaging and internal pure lead-tin composition,
EnerSys’ products can withstand not only extreme
temperatures but also harsh usage.
GENESIS external case for the EP product is
constructed from UL 94V-0 rated non-halogenated
flame-retardant materials. GENESIS products are shock
and vibration resistant, designed to offer higher
tolerance levels to meet demanding applications,
including those in commercial and outdoor
applications. The company's focus on battery-case
integrity and high vent pressure, coupled with pure
lead-tin's low grid-corrosion rate, means GENESIS
provide the longest service life possible.
The pure lead-tin advantage
Vent pressure
Fast-recharge capability
High-temperature
tolerance
Low-temperature
performance
High-temperature
performance
Low Fair Moderate Excellent High
GENESIS® pure lead-tin technology Conventional technology
None
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Publication No: EN-GPL-SG-003 - November 2008
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0.01
0.1
1
10
-40 -30 -20 -10 0 10 20 30 40 50
Discharge time, hours
Temperature, ºC
15 MIN RATE C RATE C/5 RATE
Capacity as a function of temperature for GENESIS®Batteries
7. Fastest recharge - EnerSys’ pure lead-tin chemistry
allows GENESIS®to offer the shortest recharge
efficiency of any sealed-lead battery on the market.
With pure lead-tin, you can achieve a 95% state of
recharge in less than one hour - without loss of
capacity or electrolyte using conventional constant-
voltage charging techniques.
Flexible charging options are possible with GENESIS,
as no current limit is required when using a constant
voltage charger.
8. Orientation/placement/transport - Due to the
products’ mechanical design, GENESIS can be
mounted and operated in any position, except
inverted, an attractive feature for less accessible areas.
GENESIS offer UL94 V-0 non-halogenated flame-
retardant packaging, thus allowing the mounting of
systems in sensitive areas and human environments.
GENESIS products are classified as “nonspillable
batteries”, and are excepted from the Department of
Transportation’s comprehensive packaging
requirements if the following conditions are satisfied:
(1) The battery is protected against short circuits and
is securely packaged and (2) The battery and outer
packaging must be plainly and durably marked
“NONSPILLABLE” or “NONSPILLABLE BATTERY”.
GENESIS shipments from EnerSys®Warrensburg
location, will be properly labeled in accordance with
applicable regulations. Packaging changes performed
at other locations may require additional labeling,
since in addition to the battery itself containing the
required marking, the outer packaging of the battery
must also contain the required marking:
“NONSPILLABLE” or “NONSPILLABLE BATTERY”.
GENESIS batteries have been tested and determined
to be in compliance with the vibration and pressure
differential tests contained in 49 CFR § 173.159(d).
Because GENESIS are classified as “Nonspillable”
and meet the conditions from § 173.159(d) they do
not have an assigned UN number nor do they require
additional DOT hazard labeling.
All batteries that have been tested and determined to
be in compliance with the DOT Hazardous Material
Regulations, the International Civil Aeronautics
Organisation (ICAO), and the International Air
Transport Association (IATA) Packaging Instruction
806 and Special Provision A67, are therefore exempt
from all other requirements of these regulations and
classified as a “nonspillable battery”.
9. Shelf life - Pure lead-tin batteries have an extremely
low self-discharge rate, thus providing extended
storage capability while maintaining high state-of-
charge levels for dependable operation.
GENESIS has a shelf life more than two times that of
conventional lead batteries. To assure maximum
reliability, EnerSys recommends that all stored
cells/batteries be recharged (boost charged) once
every 24 months or when the open circuit voltage
drops to 12.00 volts per battery, whichever occurs
earlier. Inventory should be checked more frequently
if storage temperature regularly exceeds 25°C.
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11.4
11.6
11.8
12.0
12.2
12.4
12.6
12.8
13.0
10 20 30 40 50 60 70 80 90 100
OCV, V
State of Charge, %
10
100
1000
3000
20 30 40 50 60 70
Storage Time in Days
Temperature in Degrees Celsius
State of charge for GENESIS®batteries
Storage time as a function of temperature for GENESIS®batteries
(Fully charged battery)
Charging
recommendations:
Broadly speaking, a battery may
be recharged using either a
constant voltage (CV) charger or a
constant current (CC) charger, or a
modification of either or both of
these.
The exact regime chosen
generally depends upon the time
and economic constraints
imposed by the system. Constant
current charging is widely used in
cyclic applications where a
recharge must be accomplished in
a relatively short time period.
Constant voltage charging, where
a single voltage level is applied
across the battery terminals, is the
most suitable method to recharge
GENESIS®products. Depending
on the CV charger’s current limit,
it is possible to recharge these
batteries from a 100% discharged
condition to better than 95% state
of charge in less than one hour,
using only the cyclic charge
voltage.
Constant voltage charging
Constant voltage (CV) charging
should be within the following
ranges:
Fast Chargers, 12 volts:
14.7 to 15.0 volts @ 25°C
Float Chargers, 12 volts:
13.5 to 13.8 volts @ 25°C
To avoid thermal runaway in
warmer temperatures, and to
improve charge acceptance in
colder temperatures, the charger
voltage should be compensated
by approximately 18 millivolts per
battery per degree centigrade
variance from 25°C. This is a
negative coefficient, with the
voltage being lowered as the
temperature increases, and vice
versa.
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2 01 2
Time (Hours)
3456789101112
Cell Voltage (Volts)
-40°C
-40°F
-20°C
-4°F
0°C
32°F
25°C
77°F
40°C
104°F
Discharge Rate C/10 or 0.1C
Voltage regulation for GENESIS®batteries
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Publication No: EN-GPL-SG-003 - November 2008
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There is no need to limit the inrush current to the battery
during the initial phase of constant voltage charging.
The low internal resistance of GENESIS®batteries allows
for large inrush current without damage.
Since not all of the charge returned is accepted to
replenish the electro-chemical potential, a good rule of
thumb to use is that the charge returned should be 105%
to 110% of the capacity delivered on the previous
discharge.
Most current waveforms are not pure DC nor are they
pure sine waves. Therefore,
consult the EnerSys®
Application Support Department
for assistance when
evaluating the charger current waveforms for your
specific application.
Internal Nominal
res. of fully short circuit Brass
Products Capacity Part charged cell current for Length Width Height Weight Terminal
Number mΩ@ 25°C charged battery in. mm in. mm in. mm lb. kg (metric)
G13EP 13Ah 0770-2007 8.5 1,400A 6.910 175.51 3.282 83.36 5.113 129.87 10.8 4.9 M6 w/ss
hardware
G13EPX 13Ah 0770-2003 8.5 1,400A 6.998 177.75 3.368 85.55 5.165 131.19 12.0 5.4 M6 w/ss
hardware
G16EP 16Ah 0769-2007 7.5 1,600A 7.150 181.61 3.005 76.33 6.605 167.77 13.5 6.1 M6 w/ss
hardware
G16EPX 16Ah 0769-2003 7.5 1,600A 7.267 184.58 3.107 78.92 6.666 169.32 14.7 6.7 M6 w/ss
hardware
G26EP 26Ah 0765-2001 5.0 2,400A 6.565 166.75 6.920 175.77 4.957 125.91 22.3 10.1 M6 w/ss
hardware
G26EPX 26Ah 0765-2003 5.0 2,400A 6.636 168.55 7.049 179.04 5.040 128.02 23.8 10.8 M6 w/ss
hardware
G42EP 42Ah 0766-2001 4.5 2,600A 7.775 197.49 6.525 165.74 6.715 170.56 32.9 14.9 M6 w/ss
hardware
G42EPX 42Ah 0766-2003 4.5 2,600A 7.866 199.80 6.659 169.14 6.803 172.80 35.1 15.9 M6 w/ss
hardware
G70EP 70Ah 0771-2001 3.5 3,500A 13.020 330.71 6.620 168.15 6.930 176.02 53.5 24.3 M6 w/ss
hardware
G70EPX 70Ah 0771-2003 3.5 3,500A 13.020 330.71 6.620 168.15 6.930 176.02 56.0 25.4 M6 w/ss
hardware
DIMENSIONS
GENESIS®product family (All capacities at 10hr. rate 25°C to 1.67Vpc)
GENESIS®EP:
X denotes metal jacket design for extreme duty
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Products 5 min 10 min 15 min 30 min 60 min 90 min 5 hr 8 hr 10 hr 20 hr
G13EP (13Ah) 70.8 43.6 32.2 18.6 10.4 7.3 2.5 1.6 1.3 .7
G16EP (16Ah) 90.0 54.8 40.1 23.0 12.7 8.9 3.0 2.0 1.6 .8
G26EP (26Ah) 143.4 90.7 67.4 39.0 21.7 15.1 5.0 3.2 2.6 1.4
G42EP (42Ah) 212.0 138.4 104.1 60.8 33.8 23.5 7.9 5.1 4.2 2.3
DURATION
Constant current discharge/amps to 1.67Vpc @ 25°C
Products 5 min 10 min 15 min 30 min 60 min 90 min 5 hr 8 hr 10 hr 20 hr
G13EP (13Ah) 758.4 481.8 361.2 231.6 121.2 85.8 29.4 19.2 15.6 8.4
G16EP (16Ah) 975.6 609.6 453.6 264.6 190.2 105.0 36.0 23.4 19.2 10.2
G26EP (26Ah) 1532 995 751 444 251 175.8 59 38 31 16
G42EP (42Ah) 2291 1540 1173 698 394 276 94 62 51 28
DURATION
Constant current discharge/watts per cell to 1.67Vpc @ 25°C
Products Cyclic Float Storage & Charge C/5 Cycle life Float life at
discharge 100% DOD 25°C (20°C)
G13EP, G16EP CV 14.7-15.0 CV 13.5-13.8 -40°C to +45°C -40°C to +45°C 400 10 years
G26EP & G42EP CC* CC* (15 years)
G13EPX, G16EPX CV 14.7-15.0 CV 13.5-13.8 -40°C to +60°C -40°C to +60°C 400 10 years
G26EPX & G42EPX CC* CC* (15 years)
CHARGING PER CELL TEMPERATURE RANGE LIFE EXPECTANCY
Charging/Temperature/Life:
Maximum recommended storage time before recharge - 24 months @ 25°C or 2.0Vpc, whichever is earlier
Atmospheric pressure range - Vacuum to 2 atmospheres
Terminal attachment torque for G13EP & G16EP - 50 in.-lbs (5.6 nm)
Terminal attachment torque for G26EP & G42EP - 60 in.-lbs (6.8 nm)
*Users planning to use CC should consult the EnerSys Application Support Department
GENESIS®EP performance specifications
UL Recognised Component. Meets UL 1989
Caution: Batteries contain toxic materials (Pb and H2SO4) • Avoid short circuit • Do not charge in gas-tight container
Sealed-lead rechargeable battery must be recycled or disposed of properly. Contact EnerSys Customer Service for details.
Products A B C D E Weight
in. mm in. mm in. mm in. mm in. mm lb. kg
G13EP 6.910 175.51 3.282 83.36 5.113 129.87 5.56 141.2 0.81 20.6 10.8 4.9
G13EPX 6.998 177.75 3.368 85.55 5.165 131.19 5.56 141.2 0.81 20.6 12.0 5.4
G16EP 7.150 181.61 3.005 76.33 6.605 167.77 5.74 145.8 0.67 16.9 13.5 6.1
G16EPX 7.267 184.58 3.107 78.92 6.666 169.32 5.74 145.8 0.67 16.9 14.7 6.7
G26EP 6.565 166.75 6.920 175.77 4.957 125.91 0.64 16.3 1.06 27.0 22.3 10.1
G26EPX 6.636 168.55 7.049 179.04 5.040 128.02 0.69 17.5 1.11 28.2 23.8 10.8
G42EP 7.775 197.49 6.525 165.74 6.715 170.56 0.74 18.8 0.87 22.0 32.9 14.9
G42EPX 7.866 199.80 6.659 169.14 6.803 172.80 0.79 20.1 0.91 23.2 35.1 15.9
DIMENSIONS
GENESIS®EP mechanical specifications (A, B & C - Maximum)
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A
D
C
B
E
M6 X 1.0 SCREW
B
A
C
D
E
M6 X 1.0 SCREW M6 X 1.0 SCREW
A
D
B
C
E
Products 5 min 10 min 15 min 30 min 60 min 90 min 5 hr 8 hr 10 hr 20 hr
G70EP (70Ah) 342.4 228.5 173.4 102.5 57.4 40.6 13.4 8.7 7.1 3.9
DURATION
Constant current discharge/amps to 1.67Vpc @ 25°C
Products 5 min 10 min 15 min 30 min 60 min 90 min 5 hr 8 hr 10 hr 20 hr
G70EP (70Ah) 3680 2519 1940 1173 670 486 161 105 86 47
DURATION
Constant power discharge/watts per battery to 1.67Vpc @ 25°C
GENESIS®70EP performance specifications
Products Cyclic Float Storage & Charge C/5 Cycle life Float life at
discharge 100% DOD 25°C (20°C)
G70EP CV 14.7-15.0 CV 13.5-13.8 -40°C to +45°C -40°C to +45°C 400 10 years
CC* CC* (15 years)
G70EPX CV 14.7-15.0 CV 13.5-13.8 -40°C to +60°C -40°C to +60°C 400 10 years
CC* CC* (15 years)
CHARGING PER CELL
Charging/Temperature/Life:
Maximum recommended storage time before recharge - 24 months @ 25°C or 2.0Vpc, whichever is earlier
Atmospheric pressure range - Vacuum to 2 atmospheres
Terminal attachment torque for G70EP - 60 in.-lbs (6.8 nm)
*Users planning to use CC should consult the EnerSys Application Support Department
UL Recognised Component. Meets UL 1989
Caution: Batteries contain toxic materials (Pb and H2SO4) • Avoid short circuit • Do not charge in gas-tight container
Sealed-lead rechargeable battery must be recycled or disposed of properly. Contact EnerSys Customer Service for details.
All shown without metal
jacket
TEMPERATURE RANGE LIFE EXPECTANCY
Products A B C D E Weight
in. mm in. mm in. mm in. mm in. mm lb. kg
G70EP 13.020 330.71 6.620 168.15 6.930 176.02 9.69 246.13 2.45 62.23 53.5 24.3
G70EPX 13.020 330.71 6.620 168.15 6.930 176.02 9.69 246.13 2.45 62.23 56.0 25.4
DIMENSIONS
GENESIS®70EP mechanical specifications (A, B & C - Maximum)
G13EP - G16EPX G26EP - 42EPX G70EP & G70EPX
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GENESIS®constant power (CP) discharge
5
10
100
1000
7000
5
10
100
1000
7000
0.01 0.1 1 10 50
Watts per battery
Watts per battery
Discharge time in hrs. to 1.67 VPC at 25ºC
13Ah 16Ah 26Ah 42Ah 70Ah
GENESIS®constant current (CC) discharge
0.5
1
10
100
700
0.5
1
10
100
700
0.01 0.1 1 10 50
Amps per battery
Amps per battery
Discharge time in hrs. to 1.67 VPC at 25ºC
13Ah 16Ah 26Ah 42Ah 70Ah
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ENERSYS®STANDARD PRODUCT LIST
GENESIS®EP Batteries
PART PERFORMANCE MECHANICAL
NUMBER DESCRIPTION VOLTAGE 10 Hr RATE SPECIFICATIONS SPECIFICATIONS
0770-2007 G13EP (13Ah) 12V 13Ah Page 8 Page 8
0770-2003 G13EPX (13Ah) 12V 13Ah Page 8 Page 8
0769-2007 G16EP (16Ah) 12V 16Ah Page 8 Page 8
0769-2003 G16EPX (16Ah) 12V 16Ah Page 8 Page 8
0765-2001 G26EP (26Ah) 12V 26Ah Page 8 Page 8
0765-2003 G26EPX (26Ah) 12V 26Ah Page 8 Page 8
0766-2001 G42EP (42Ah) 12V 42Ah Page 8 Page 8
0766-2003 G42EPX (42Ah) 12V 42Ah Page 8 Page 8
0771-2001 G70EP (70Ah) 12V 70Ah Page 9 Page 9
0771-2003 G70EPX (70Ah) 12V 70Ah Page 9 Page 9
Publication No: EN-GPL-SG-003 - November 2008 - Subject to revisions without prior notice. E.&O.E.
www.enersys-emea.com
Contact:
© 2008 EnerSys. All rights reserved.
Trademarks and logos are the property of
EnerSys and its affiliates unless otherwise noted.
EnerSys
P.O. Box 14145
Reading, PA 19612-4145
USA
Tel: +1-610-208-1991
+1-800-538-3627
Fax: +1-610-372-8613
EnerSys Europe
Zurich, Switzerland
EnerSys Asia
Guangdong, China
Tel: +86-755-2689 3639
EnerSys Ltd.
Rake Lane,
Clifton Junction,
Swinton, Manchester
M27 8LR, UK
Tel: +44 (0)161 794 4611
Fax: +44 (0)161 727 3809
