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 Coin Lineup

Model Number	ET1210C-R	ET2016C-R	ET1210C-H	ET2016C-H	ET920C (under development)	ET1616C (under development)
Dimensions: Diameter	12mm	20mm	12mm	20mm	9mm	16mm
Height	1mm	1.6mm	1mm	1.6mm	2mm	1.6mm
Nominal Capacity	5mAh	25mAh	4mAh	20mAh	11mAh	22mAh
Nominal Voltage	2.3V
Constant Voltage (CV) Charging	OK (No current control required)
Internal Resistance	20Ω	8Ω	25Ω	10Ω	25Ω	8Ω
Peak Discharge Surrent*1	25mA	60mA	20mA	45mA	20mA	60mA
Oparation Temp. (recommended)	-40℃～60℃		-40℃～105℃		-40℃～60℃
Heatproof Temp. (inprocess)	260℃ (Reflow soldering applicable)				80℃

*1 Maximum current within 0.5V drop for 1 sec.

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	0.45mm	0.45mm	0.45mm	0.45mm
Nominal Capacity	20mAh	20mAh	27mAh	20mAh	5mAh
Nominal Voltage	3.8V				2.3V
Constant Voltage (CV) Charging	N/A (CC-CV charging is required)				OK (No current control required)
Internal Resistance	1Ω	3.5Ω	3Ω	4Ω	5Ω
Peak Discharge Surrent※2	500mA	140mA	170mA	125mA	100mA
Bendability	conforming to ISO 14443-1 standard No deterioration after bending and torsion tests
Oparation Temp. (recommended)	0℃～45℃				-40℃～60℃
Heatproof Temp. (inprocess)	80℃ (Cold lamination is applicable)			135℃ (Hot lamination is applicable)
Features	High power	High capacity		High heat resistance	Fast charging*3 (High heat resistance)

*2 Maximum current within 0.5V drop for 1 sec
*3 80% capacity is charged for 10 min.

EnerCera leaflet (PDF:211KB)