Ultra-Thin and Compact Lithium-ion rechargeable battery “EnerCera battery” series


EnerCera is a Li-ion rechargeable battery with NGK's original Crystal Oriented Ceramic Plate as electrodes. The Crystal Oriented Ceramic Plate is composed of just an active material and it contains no organic binder or conductive material which exists in a Li-ion battery normally but does not contribute to battery capacity. Therefore, EnerCera realizes high energy density and low internal resistance with a small and thin body and is capable of high-temperature installation. The energy density is double and the internal resistance is less than a half ompared to commercial rechargeable batteries of the same size. Therefore, EnerCera is an ultra-small/ultra-thin onboard-type high-performance battery for operating ICs, sensors and a wireless communication system which needs large current such as several 10 mA to several 100 mA. In addition, CV (Constant Voltage)-charging capability eliminates the need for a charger IC to control the charge current.

"EnerCera" Series
Application example: Flexible Tag Datalogger for Logistics


EnerCera has two types: “EnerCera Pouch,” an ultra-thin and bendable cell, 0.45 mm thick, for embedding in a card, and "EnerCera Coin," a coin type cell,1 mm to 1.8 mm thick, for mounting on a circuit board. EnerCera Pouch is the world's first thin-type Li-ion battery which can be embedded by hot lamination (above 100 degree Celsius) used widely in the IC card production. The EnerCera Pouch lineup has a fast charging type, a high-capacity type and a high-power type for customers' various device designs. EnerCera Coin is the world's first SMD (surface mount devices)-type Li-ion battery which can be mounted by Solder Reflow, commonly used as an electronic component-mounting process, and it has a high discharge current property sufficient to operate devices.

Model Number EC382704P-T EC382704P-Hr ET382704P-H
Coming soon!
ET2016C-R ET1210C-H
Appearance EC382704P-T EC382704P-Hr ET382704P-H ET2016C-R ET1210C-H
(Without terminals)
38mm×27mm 20mm 12.5mm
(With terminals)
0.45mm 2.05mm 1.3mm
Nominal Capacity 27mAh (4.3V)
24mAh (4.2V)
20mAh 20mAh 25mAh 4mAh
Nominal Voltage 3.8V 2.3V
Charge Charging Method Constant Current (CC) – Constant Voltage (CV) charging Constant Voltage (CV) charging (No current control required)
Charging Voltage 4.3V
4.2V 2.7V
Standard Charge Current 13.5mA (4.3V)
12.0mA (4.2V)
10mA -
Discharge End Voltage 3.0V 1.5V
Standard Discharge Current*1 27mA (4.3V)
24mA (4.2V)
10mA 40mA 2.5mA 0.8mA
(Ref.) Peak Discharge Current*2 560mA 130mA 300mA 60mA 20mA
Bendability Conforming to ISO 14443-1 standard
No deterioration after bending and torsion tests
Operation Temperature Discharge: -20℃∼45℃
(Charge: 0℃∼45℃)
Discharge: -20℃∼60℃
(Charge: 0℃∼60℃)
-40℃∼70℃ -20℃*5∼105℃
Features High Power High heat resistance*3 Fast charging*4 Reflow soldering unapplicable
[Applicable type under development]
Reflow soldering applicable*6

*1 Current with which nominal capacity can be used.
*2 Voltage drop is less than 0.5V with continuous discharge for 0.1 sec. (at 25℃)
*3 Compatible with hot lamination for IC card manufacturing.
*4 Can be charged from 0% to 80% capacity in 14min.
*5 From -40°C to 105°C for RTC backup applications.
*6 Recommended conditions Max.240°C × 1 time Please contact us for details.

IEC62133 certified.
Contents may be changed without notice.

Whitepaper by Reuters Events:
Innovative Technologies Enabling Digital Transformation

This whitepaper features technology insights and real-world case-studies from a diverse set of industries including; Logistics, Healthcare, Smart Cities, Wearables and more, including:

  • NGK INSULATORS: Powering and empowering the IoT
  • SMK Corporation: Harvesting energy to beat the IoT battery drain
  • Ricoh USA, Inc. Group: Power for sensors in new worlds of operation

Innovative Technologies Enabling Digital Transformation

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