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ER
Lithium Thionyl Chloride Battery(Li/SOC12)



Maxell ER (lithium thionyl chloride) batteries are available only for equipment manufacturers as a built-in part. Therefore, Maxell does not supply these batteries for replacement directly to users of equipment with these batteries. When built-in ER batteries need to be replaced, please contact your equipment manufacturer. If you are planning to use Maxell ER batteries in your equipment as a built-in part, please contact Maxell.

 

SPECIFICATIONS

Model Nominal
Voltage (V)		 Nominal capacity (mAh)* Nominal discharge current (mA) Operating
Temperature
Range
(deg. C)		 Dimensions (mm)** Weight (g)** Data Sheets With Terminals Warnings
Diameter Height
ER18/
50 		3.6 3650 125 -55 to +85 18 52.6 22
ER17/50 3.6 2750 125 17 52.6 20
ER6 3.6 2000 100 14.5 53.5 15
ER6C 3.6 1800 100 14.5 51 15
ER17/33 3.6 1600 75 17 35 13
ER3 3.6 1100 40 14.5 29.9 8
ER3S 3.6 790 35 14.5 26 7

*Dimensions and weight are for the battery itself, but may vary depending on the shape of terminals or other factors.
**Nominal capacity indicates duration until the voltage drops down to 3.0V when discharged at a nominal discharge current at 20 deg. C.

Data and dimensions are not guaranteed but reference values. For further details, please contact us at your nearest Maxell office.

 

Contents on this website are subject to change without notice.

 

 

Product Safety Data Sheet Down load(44kb)

 

 

 

 

OVERVIEW

This battery is ideal for such long-term applications as power for electronic devices and electric power, water, and gas meters, and especially as a backup power source for memory ICs.

 

 

 

 

CONSTRUCTION

 

 

 

 

PRINCIPLE AND REACTIONS

The lithium thionyl chloride battery uses liquid thionyl chloride (SOCL2) as its positive active material, and lithium (Li) as its negative active material. The reactions of the battery are shown below.
 

Battery Reactions

Positive reaction: 2SOCl2+4Li++4e-   4LiCl+S+SO2
Negative reaction:    Li   Li++e-
Total reaction: 2SOCl2+4Li   4LiCl+S+SO2

 

 

 

 

FEATURES

•
High 3.6-V voltage
 
The lithium thionyl chloride battery achieves a high voltage of 3.6 V.
•
Flat discharge characteristics
 
The change of internal resistance during discharge is minimal, allowing for flat discharge voltage until end of discharge life.
•

High energy density
 
Provides high energy density of 970m Wh/cm3 with discharge current of 100 µA (ER6 type).
•
Wide usable temperature range
 
Can be used over a wide temperature range : - 55 deg. C to +85 deg. C (please consult with Maxell if using in temperatures of -40 deg. C or less).
•
Superior long-term reliability
 
The extremely low self-discharge, together with the use of a hermetic seal, allows for stable use over long periods.
 •

UL (Underwriters Laboratories Inc.) recognized component

 

 

 

 

APPLICATIONS

OA Machines (Fax, Copiers, Printers)

Desktop PCs
PDAs
Medical Instruments, Cash Registers

FA Instruments (Measuring Instruments, Onboard Microcomputers, Sensors)

Electronic Meters (Water, Gas, Electricity)

ETC (Electronic Toll Collection System)

 

 

 

 

MINIMUM TRANSIENT VOLTAGE

The lithium thionyl chloride battery has remarkably lower self-discharge when compared with conventional batteries. This is because a lithium chloride membrane is formed over the negative lithium surface, blocking reaction with the positive material. When first discharging after storage, resistance from this lithium chloride membrane may temporarily reduce the voltage at the initiation of discharge. The lowest voltage at this time is called minimum transient voltage, and the lower the temperature, and the larger the discharge current, the lower the voltage will be. Because minimum transient voltage is greatly influenced by storage time and conditions, it is necessary to take this into sufficient consideration when designing a device.



The figure above shows minimum transient voltage using a fresh battery.

 

 

 

 

RELATIONSHIP BETWEEN DISCHARGE LOAD AND OPERATING VOLTAGE

The operating voltage of a battery falls as the discharge load increases and temperature falls. In the case of initial use, an electric potential of at least 3 V will be maintained even at temperatures of -40 deg. C at discharge of less than 1 mA.

 

 

 

 

STORAGE CHARACTERISTICS

The lithium thionyl chloride battery is a UL (Underwriters Laboratories Inc.) recognized component. (technician replaceable)

Recognized models: ER18/50,ER17/50,ER6,ER6C,ER17/33,ER3,ER3S

Certification Number:  MH12568

 

 

 

 

Data and dimensions are not guaranteed but reference values.  For further details, please contact us at your nearest Maxell office.

 

Contents on this website are subject to change without notice.