Chip-type Ceramic Rechargeable Battery "EnerCera" Series

Overview

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.

Application Examples

Lineup

EnerCera has two types: "EnerCera Coin," a coin type cell, 1 mm to 2 mm thick, for mounting on a circuit board, and "EnerCera Pouch," an ultra-thin and bendable cell, 0.4 mm to 0.45 mm thick, for embedding in a card. 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. 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 Pouch Lineup

Model Number	EC382504P-P	EC382204P-C	EC382704P-C	EC382704P-H	ET271704P-H
Dimensions	38mm ×25mm	38mm×22mm	38mm×27mm	38mm×27mm	27mm×17mm
Thickness	0.45mm
Nominal Capacity	20mAh(4.2V)	20mAh(4.3V) 18mAh(4.2V)	27mAh(4.3V) 24mAh(4.2V)	20mAh(4.2V)	5mAh(2.7V)
Nominal Voltage	3.8V				2.3V
Constant Voltage (CV) Charging	N/A (CC-CV charging required)				OK (No current control required)
Peak Discharge Surrent*1	500mA	200mA	260mA	130mA	100mA
Bendability	Conforming to ISO 14443-1 standard No deterioration after bending and torsion tests
Oparation Temp. (recommended)	Discharge:-20℃~45℃(Charge:0℃~45℃)			Discharge:-20℃~60℃(Charge:0℃~60℃)	-40℃~70℃
Heatproof Temp. (inprocess)	80℃			135℃
Features	High power	High capacity		High heat resistance	Fast charging*2 (High heat resistance)

*1 Voltage drop is less than 0.5V with continuous discharge for 0.1 sec. (25℃)
*2 Can be charged from 0% to 80% capacity in 14 min.

EnerCera Coin Lineup

Model Number	ET2016C-R	ET1210C-H	ET2016C-H	ET920C	ET1616C
Size	Φ20 x 1.6mm	Φ12.5 x 1.0mm	Φ20 x 1.6mm	Φ9.6 x 2.0mm	Φ16 x 1.6mm
Nominal Capacity	25mAh	4mAh	20mAh	11mAh	21mAh
Nominal Voltage	2.3V
Constant Voltage (CV) Charging	OK (No current control required)			OK*1 (No current control required)
Peak Discharge Surrent*1	60mA*2	23mA*2	50mA*2	45mA*3	80mA*3
Oparation Temp. (recommended)	-40℃～60℃	-20℃～105℃		-20℃～60℃
Heatproof Temp. (inprocess)	260℃ (Reflow soldering applicable)			-

*1 ET920C and ET1616C are designed for solar watches.
*2 Voltage drop is less than 0.5V with continuous discharge for 0.1 sec. (25℃)
*3 Voltage drop is less than 0.5V with continuous discharge for 1 sec. (25℃)

EnerCera leaflet (PDF:209KB)