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HCB Battery Co., Ltd.
HCB Battery Co., Ltd.

ER18505 Li-SOCl2 Cylindrical Lithium Battery

3.6V 4000mAh A-size ER18505 cylindrical primary lithium battery for smart metering, Security System, RFID/IoT System, Wireless Transmitting for Smart Home Devices or Military Devices.

ER18505 Li-SOCl2 Cylindrical Lithium Battery Details


Place of OriginChina
Brand NameHCB
CertificationUN38.3 UL ISO9001 ISO14000 ATEX etc
Model NumberER18505 Battery


ER18505 Lithium Battery Advantages


  • High and Stable Voltage for ER18505 lithium battery

  • Energy Density for ER18505 lithium battery up to 590Wh/kg

  • Long Shelf Life (less than 1% per year after 1  year of storage at +25℃) ER18505 lithium battery

  • Wide Operating Temperature (-55℃~+85℃) suitable for this kind of smart home battery

ER18505 Datasheet


Electrical characteristicsOpen circuit voltage (at 25°C)≥3.65V
Nominal capacity4000mAh
(At +25°C, the battery is discharged at continuous current 2mA until the voltage reaches cut-off voltage 2.0V. The capacity can vary at a different temperature, discharge current or cut-off voltage.)
Maximum continuous current120mA
(New cell*, at +25°C, 2.0V cut-off, battery discharged for
minimum 50% of nominal capacity.)
Maximum pulse discharge current180mA
(200 mA/0.1 second pulses, drained every 2 minutes at +25°C from undischarged the new cell with 10 uA base current, yield voltage reading above 3.0V. The readings may vary according to the pulse characteristics, the temperature, and the’s previous history. Fitting the cell with a capacitor may be recommended in severe conditions, consult HCB.)
Storage (recommended)≤+30°C
(For more severe conditions, consult HCB)≤75%RH
Operating temperature range-55°C~+85°C
(Operation above ambient temperature may lead to reduced
capacity and lower voltage readings at the beginning of pulses, consult HCB.)
Physical characteristicsDiameter18.4±0.2mm
Height49.1±0.5mm
Typical weight31.0g
Li metal content1.15g


ER18505 Battery Using Warnings


  • Do not short circuit
  • Do not recharge
  • Do not puncture
  • Do not crush
  • Do not dismantle
  • Do not incinerate
  • Do not mix new and used batteries
  • Do not heat above 100°c


ER18505 Li-SOCl2 Cylindrical Lithium Battery Technical Drawings

ER18505 Li-SOCl2 Cylindrical Lithium Battery Technical Drawings

Typical Discharge Profiles of ER18505 Lithium Battery

Er18505 Lithium Battery Voltage Plateau Versus Current and Temperature


ER18505 Lithium Battery Storage Characteristic


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