UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

BATTERY MODULE
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PRODUCT DESCRIPTION

24V, 26Ah Battery capacity (2x 12V batteries in series)
Long Life Battery: 10 to 12 years according to EUROBAT
Easy access to the terminals and the fuse
Heavy duty fuse holder and spare fuse included
UZK24.262 and UZO24.262 battery modules include theconnection board and wiring kit UZW24.100
UZK24.262-E1 and UZO24.262-E1 extensions for the paralleling ofa second battery pack3 year warranty (except for batteries that are considered aservice part)

SHORT-FORM DATAThe UZK24.262 battery module utilizes two or four non-spillable
maintenance-free VRLA lead-acid batteries (connected in series) that areassembled in one package with all the required wiring included.
Connector terminals for the paralleling of 2 batteries are included too.
The UZK24.262 comes with the sensor board UZW24.100 which contains
a temperature sensor, fuses for 2 to 4 batteries plus an auto-resettablefuse which is suitable for balancer currents up to 2.5A. This fuse protects
the center-tap wire between the battery module and the DC-UPS control
unit.
The sensor board enables to monitor and charge the two batteries
individually and precisely, extending the service life of the batteries andmaking matching of replacement batteries unnecessary. Usage of thesensor board is optional, the DC-UPS will also function without the sensor
board installed.
The battery module is available in four different options. It can be ordered
as UZK-module with batteries or as UZO-module without batteries, sothese can be procured separately and installed at a later date to avoid
outdated batteries. Both modules contain the connection board andwiring kit UZW24.100.
The extension kits can be ordered as UZK24.262-E1 with batteries or as
UZO24.262-E1 without batteries for the paralleling of a second battery
pack. Each module contains battery terminal covers and ring cable lugs.

ORDER NUMBERS

Battery type
Battery life
Battery voltage
Battery capacity
Battery current

Recommended
charging voltage

Self-discharge rate
Battery fuse
Temperature sensor
Temperature range

Size (WxHxD)
WeightVRLA
10 to 12 years
DC 24V
26Ah
Max. 50A
Max. 7.5A
Max. 2.5A
27.8V
27.5V
27.15V
26.8V
3%/month
2*40A
PT1000-10°C to +50°C-15°C to +50°C-20°C to +50°C
359x214x167mm
359x214x128mm
2x 10.0kg
2x 0.70kg
2x 10.0kg
2x 0.70kg
0.25kgNominal, acc. EUROBAT
NominalNominalDischarging current
Charging current
Balancer current
At 10°C
At 20°C
At 30°C
At 40°C
At 20°C
ATOF® 287 040 from Littelfuse
For charging
For discharging @50A
For storage
UZK24.262 incl.UZW24.100
UZK24.262–E1
UZK24.262
UZO24.262
UZK24.262-E1
UZO24.262-E1
UZW24.100

MAIN APPROVALS

Battery module

UZK24.262
UZO24.262
UZK24.262-E1
UZO24.262-E1

Battery module 24V, 26Ah
UZK24.262 w/o batteries
Battery extension 24V, 26Ah
UZK24.262-E1 w/o batteries

Batteries

UZB12.261

Battery replacement 12V,
26Ah; 2pcs needed for
one battery module

For details and the complete approval list, see chapter 12.

UL 508ATEX(planned)

IECEx(planned)

Class I Div 2(planned)

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

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UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

INDEX
1.
2.
3.
4.
5.
6.
7.
8.
9.

Page
Intended Use ................................................................ 3
Installation Instructions ................................................ 3
Instructions for Battery Storage ................................... 3
Instructions for Replacing Batteries ............................. 4
Instructions for Disposal of the Batteries ..................... 4
Product pictures ........................................................... 5
Functional Diagram ...................................................... 5
Environment ................................................................. 6
Sensor Board ................................................................ 7Page
10. Terminals and Wiring ................................................... 7
11. Protection Features ..................................................... 8
12. Approved, Fulfilled or Tested Standards ...................... 8
13. Regulatory Product Compliance .................................. 9
14. Physical Dimensions and Weight ............................... 10
15. Recommendations for a Long Battery Life ................. 11
16. Mounting Orientations .............................................. 12

The information given in this document is correct to the best of our knowledge and experience at the time of publication. If not
expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As the state of ourknowledge and experience is constantly changing, the information in this data sheet is subject to revision. We therefore kindly ask you
to always use the latest issue of this document (available under www.pulspower.com).
No part of this document may be reproduced or utilized in any form without our prior permission in writing.

WARNING Risk of electrical shock, fire, personal injury or death.
- Turn power off before working on the device. Protect against inadvertent re-powering.
- Do not modify or repair the unit.
- Use caution to prevent any foreign objects from entering the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns.

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

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UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

1. INTENDED USEThis module is designed for installation in an enclosure and is intended for the general professional use such as in industrial control,
office, communication, and instrumentation equipment.
Do not use this module in equipment, where malfunction may cause severe personal injury or threaten human life.

2. INSTALLATION INSTRUCTIONSThis device may only be installed and put into operation by qualified personnel.
Before initial use, check the last charging which is marked on the battery. If it is older than 9 months, replace the battery.
Do not install the battery fuse until the installation work is complete.
This device does not contain serviceable parts, except the fuse or replacement battery. If malfunction should occur during installation oroperation, first check the fuse and battery for proper functionality. If the unit is damaged or if the malfunction continues, immediately
turn power off and send device to the factory for inspection.
Replacement fuses must be of the same type or an UL listed fuse with the same nominal value and characteristics.
Do not short-circuit the battery poles or power wires and always check correct battery polarity.
Mount the device onto a flat surface. Do not install the battery module upside down.
Place the battery module in a cool area inside a cabinet.
Install the device in an enclosure providing protection against electrical, mechanical and fire hazards. Ensure sufficient ventilation byfollowing the requirements of the EN 50272-2.
CAUTION: The unit contains wet cell batteries. Ventilation of the installation room in accordance with the rules of Canadian ElectricalCode, part 1 is required if used in Canada.
The battery module is for use in a controlled environment. Do not use the device in pollution degree 3 areas without additional
protection or in applications where a degree of protection better than IP00 is required.
Do not use batteries other than the original batteries supplied by the manufacturer to avoid conflicts with agency approvals.
The maximum surrounding air temperature is +50°C. The operational temperature is the same as the ambient or surrounding air
temperature and is defined as the air temperature 2cm below the device.

3. INSTRUCTIONS FOR BATTERY STORAGE
Do not store batteries or battery modules at temperatures higher than 25°C or performance and lifetime may change.
Do not store discharged batteries. Keep batteries fully charged!
Charge retention is important to get the longest battery life. Stored batteries which are not fully charged age faster than charged
batteries.
Do not store batteries longer than 9 months without charging or performance and lifetime may change. Every 9 months or whenever
the open circuit voltage (OCV) falls below 12.6V, the battery module should be charged. Apply a charging voltage of 13.8V (at 25°C) for
72 hours. Batteries with an OCV below 12V must not be charged anymore and must be disposed.

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

3/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

4. INSTRUCTIONS FOR REPLACING BATTERIES
Batteries need to be replaced periodically. The time interval depends on the ambient temperature in which the battery is used and on
the number and depth of discharge cycles. In a typical application it is recommended to replace the batteries at least every 2 years.
Disconnect battery fuse before replacing the battery.
Regarding disposal of used batteries see chapter 5.
Fig. 4-1 Replacing the battery

To replace battery:
ATTENTION! Disconnect battery fuse before replacing the battery.
1)

Loosen screw of battery holder with only one turn.
Remove Insulating caps from the battery terminals.

2)

Unscrew the battery terminals.

3)

Slide the mounting bracket sideways and take the mounting
bracket off.

4)

Remove the battery.

5)

Insert the new battery.

6)

Fix it again with the mounting bracket and make sure thatthe lock washer lies between the screw head and mounting
bracket.

7)

Screw the mounting bracket with tightening torque: 2Nm.

8)

Do not over-tighten screws of the terminal bolts of thebattery. Recommended tightening torque: 2.3Nm.

9)

Insert battery fuse

5. INSTRUCTIONS FOR DISPOSAL OF THE BATTERIES
Batteries must be completely discharged before replacement and can be returned to the supplier of the battery module or the battery
manufacturer for disposal.
Always dispose batteries through a recycling organization.

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

4/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

6. PRODUCT PICTURES
Fig. 6-1 UZK24.262

Fig. 6-2 UZK24.262-E1 (*)(*) Actual wire length is longer than the shown wire length to connect to thescrew terminals of the master module

7. FUNCTIONAL DIAGRAMUZK24.262

Temperature
Temperature
Center Tap

+

PT100
Temp.Sensor

Fuse andConnection
Board

+

12V 26Ah
BAT1+

12V 26Ah
BAT2

UZK24.262 with UZK24.262-E1

Temperat ure
Temperat ure
Cent er Tap

+

PT100
Temp.Sensor

Fuse andConnect ion
Board

+

12V 26Ah
BAT1+

12V 26Ah
BAT2+

12V 26Ah
BAT1

UZK24.262

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany+

12V 26Ah
BAT2

UZK24.262-E1

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UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

8. ENVIRONMENT
Operational temperature *)-10°C to +50°C

Storage temperature-15°C to +50°C-15°C to +50°C-20°C to +50°C

Humidity

5 to 95% r.h.

Vibration sinusoidal

Altitude±4mm at 16.7Hz
fixed frequency for 1hour
free fall from 20cm
onto a wooden floor
0 to 6000m

Degree of pollution

2

Shock

For charging
Frequently charging below +5°C reduced the lifetimeof the battery
For discharging @50A
For discharging @40A
For storage and transportation
Recommendation:
For best performance and lifetime do not store attemperatures higher than 25°C.
IEC 60068-2-30
Do not energize while condensation is present
Vibration in vertical mounting orientationaccording to IEC/EN 61056-1
Shock with bottom down orientation according to
IEC/EN 61056-1
According to IEC 62477-1, not conductive*) Operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit.

Fig. 8-1 Temperature Effects in Relation to Battery Capacity
Percent age of capacit y available
120%
100
80
60
40
20
0
-20°
-4°

-10°
14°

0°
32°

10°
50°

20°
68°

30°
86°

40°
104°

50° C
122° F

Temperat ure

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

6/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

9. SENSOR BOARD
The battery module includes a monitoring andprotection board. This board contains atemperature sensor and a center-tap connection
with an auto-resettable fuse to protect the centertap wire between the battery module and the DCUPS control unit.
The sensor board enables to monitor and charge
the two batteries individually and precisely,
extending the service life of the batteries andmaking matching of replacement batteries
unnecessary.
Usage of the sensor board is optional, the DC-UPS
will also function without the sensor board installed.

10. TERMINALS AND WIRING
The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring.
Power terminals

Centre tap and signal terminals

Type
Maximal wire size, solid wire
Maximal wire size, stranded wire
American Wire Gauge
Maximal wire diameter
Wire stripping length

Screw terminals
10mm2
10mm2
AWG 22-8
5.2mm (including ferrules)
12mm

Screw terminals
1.5mm21.5mm2
AWG 26-14
1.5mm (including ferrules)
6mm

Screwdriver

3.5mm or 5mm slotted or
crosshead No 2
2.3Nm
0.2m
1m

3.5mm slotted

Recommended tightening torque
Cable length
UZK24.262 / UZO24.262
UZK24.262-E1 / UZO24.262-E1

0.5Nm

Instructions:a) Follow national installation codes and installation regulations!
b) Ensure that all strands of a stranded wire enter the terminal connection!
c) Unused terminal compartments should be securely tightened.
d) Ferrules are allowed.
e) Do not use individual wires smaller than 6mm² (AWG 10) or longer than 2m to avoid voltage drops on this connection

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

7/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

11. PROTECTION FEATURES
Degree of protection
Class of protection
Internal input fuse

IP00
III
2*40A

Isolation

1100Vac

According to EN/IEC 60529
According to EN/IEC 61140
DC-Fuse (blade type) ATOF® 287 040 from Little fuse
Replacement fuses must be of the same type or an UL listed fuse with thesame nominal value and characteristics.
Isolation voltage between power to chassis

12. APPROVED, FULFILLED OR TESTED STANDARDSUL 508UL Certificate
Listed equipment for category NMTR - Industrial Control Equipment
Applicable for US and Canada
E-File: E198865

UL 61010-2-201

UL Certificate
Listed equipment for category NMTR - Electrical Equipment for
Measurement, Control and Laboratory Use - Particular requirements forcontrol equipment
Applicable for US and Canada
E-File: E198865(only UZO24.262)

IEC 61010-2-201

ATEX(planned)

IECEx(planned)

CB Scheme Certificate
Electrical Equipment for Measurement, Control and Laboratory Use Particular requirements for control equipment
Agency Certificate (Bureau Veritas)
EN 60079-0 Explosive atmospheres - General requirements
EN 60079-7, EN 60079-15 Equipment protection by type of protection "e"and "n"Certificate: t.b.d
Temperature Code: t.b.dType of Protection: t.b.dIECEx Certificate
IEC 60079-0 Explosive atmospheres - General requirements
IEC 60079-7, IEC 60079-15 Equipment protection by type of protection "e"and "n"Certificate: t.b.d.
Temperature Code: t.b.dType of Protection: t.b.dClass I Div 2(planned)

UL Certificate
Listed equipment for category NRAD - Listed equipment Industrial Control
Equipment for Use in Hazardous Locations
Applicable for US and Canada
E-File: t.b.d.
Temperature Code: t.b.dGroups: t.b.d

Labs

Paint Wetting Impairment Substances Test (or LABS-Test)
Tested for Zone 2 and test class C1 according to VDMA 24364-C1-L/W for
solvents and water-based paints

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

8/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

13. REGULATORY PRODUCT COMPLIANCE
EU Declaration of Conformity

The CE mark indicates conformance with the- EMC directive- RoHS directive

REACH Regulation (EU)Manufacturer's Declaration
EU regulation regarding the Registration, Evaluation, Authorisation andRestriction of Chemicals (REACH) fulfilled.
EU Regulation (EC) 1907/2006.

Battery Directive (EU)
(only UZB12.121)

Battery recycling marking indicates conformity with with European
Directive on batteries and accumulators and waste batteries andaccumulators.
Batteries which are brought to the market by PULS are registered within
Germany in the register of the responsible authority.
For information on battery registration in other EU countries, pleasecontact the local PULS sales office.
The battery must be recycled at the end of life in accordance with local
and national laws and regulations.

WEEE Regulation(only UZO24.262 UZO24.262E1)

PULS brand EEE recycling marking indicates the conformity with European
Regulation on Waste Electrical and Electronic Equipment (WEEE)
PULS brand EEE are registered within Germany in the register of the
responsible authority as business to business (B2B) units.
For information on EEE registration in other EU countries, please contact the
local PULS sales office.
PULS brand EEE must be recycled at the end of life in accordance with local
and national laws and regulations.

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

9/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

14. PHYSICAL DIMENSIONS AND WEIGHT
Width (*)
Height
Depth

359mm
214mm
167mm
128mm
2x 10.0kg
2x 0.70kg
2x 10.0kg
2x 0.70kg
0.25kgZinc-plated steel

Weight (*)

Bracket material

UZK24.262 with UZW24.100
UZK24.262-E1
UZK24.262
UZO24.262
UZK24.262-E1
UZO24.262-E1
UZW24.100(*) Battery modules can be separated to ease installation of complete kit
Fig. 14-1 Top viewFig. 14-2 Side viewAll dimensions in mm
Fig. 14-3 Isometric viewFig. 14-4 Hole pattern for wall mountAll dimensions in mm

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

10/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

15. RECOMMENDATIONS FOR A LONG BATTERY LIFE
Temperature:
The temperature has the most impact on the service life. The hotter the temperature, the earlier the wear-out phase of the battery
begins. The wear-out results in a degradation of battery capacity. Place the battery module in a cool location, e.g. near the bottom of
the control cabinet. Do not place the battery module near heat generating devices. Do not overcharge batteries!
Fig. 15-1 Service life (according to EUROBAT) vs.
ambient temperature, typ.
Service Lif e in Years

10
9
8
7
6
5
4
3
2
1

Design Lifeof Battery
A: 3-5 Years
B: 6-9 Years
C: 10-12 Years

C
B

A

Ambient Temperat ure

20°C

30°C

25°C

35°C

40°C 45°C

Number of discharge cycles and depth of discharge:
Do not discharge batteries more than necessary. Set buffer time limiter to the required buffer time. The number, as well as the depth ofdischarging cycles is limited. A replacement of the battery might be necessary earlier.
When choosing the battery capacity, always try to get the next higher capacity than required. The depth of discharge reduces theservice life of the battery and limits the number of cycles.
Fig. 15-2 Battery degradation vs. discharging cycles, typ.
Cell Capacit y

120%
C

100%
B

80%

A

60%

Depth ofdischarge
A: 100%
B: 50%
C: 30%

40%
20%

Number of Discharging Cycles

0

200

400

600

800

1000 1200

Store batteries fully charged
Do not store discharged batteries. Keep batteries fully charged!
Charge retention is important to get the longest battery life. Stored batteries which are not fully charged age faster than charged
batteries. Batteries which are not in use should be recharged at least once a year. The higher the ambient temperature, the shorter the
charging interval. At storage temperatures higher than 30°C, recharging should be done at least every nine months.

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

11/11

UZK24.262/-E1, UZO24.262/-E1
BATTERY MODULE 24V, 26AH, 40A

U-Series

16. MOUNTING ORIENTATIONSThe standard mounting orientation is an upright installation of the batteries onto a flat surface.
Fig. 16-1 Standard mounting orientation

The following mounting orientations are also allowed:
Fig. 16-2 Allowed mounting orientations

Do not use the battery module in an upside down position:
Fig. 16-3 Forbidden mounting orientation

Mrz. 2023 / Rev. 1.0 DS-UZK/UZO24.262-xx-EN
All parameters are typical values specified at 25°C ambient temperature unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany

12/11