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Li-ion
Lithium Ion Rechargeable Battery


This page introduces just lithium-ion cells. However, Maxell offers these cells in battery pack format only, which include electronic circuits to prevent overcharge, overdischarge and so on. These battery packs are custom-developed and produced according to special requirements regarding operating conditions and specifications. As a result, a minimum number of units may apply to such customized orders from customers purchasing battery packs. For details, consult your nearest Maxell dealer or distributor.

 

 

OUTLINE

Lithium-ion batteries consist of three layers: a positive electrode, separator and negative electrode. Lithium cobalt oxide that features high cycle life characteristics at high voltage is used in the positive electrode, whereas a carbon material featuring high capacity, stable voltage and high crystallinity is used in the negative electrode. Porous polyolefin membranes are used in the separator, while an organic solvent is used for the electrolytic solution. Lithium ions inside the positive electrode dissolve into the solution and transfer between the negative electrode during charging and between the positive electrode during discharge. Lithium-ion batteries feature high energy density and 3 times higher operating voltage than both Ni-Cd and Ni-MH batteries.

 

 

 

 

CELL STRUCTURE

 

 

 

 

PRINCIPLE AND REACTIONS

 

 

 

 

FEATURES

•
Higher operating voltage of 3.7V and energy density
 
A lithium-ion battery delivers and maintains a stable operating voltage of over 3.7V until final discharge — three times as much voltage as a Ni-Cd or Ni-MH battery provides. It takes just 1/3 the number of lithium-ion batteries to provide the equivalent amount of voltage from Ni-Cd or Ni-MH batteries, so portable devices can be made much smaller and lighter.
•
Higher discharge rate for more powerful devices
 
Lithium-ion batteries are capable of outstanding rates of discharge sufficient to power a hard disk, a video camera’s motor and other devices.
•

Stable discharge under various temperatures environmental conditions
 
Lithium-ion batteries provide stable discharge within a wide range of temperatures, from –20°C to 60°C
•
Superior storage characteristics and convenience including minimal self-discharge
 
Lithium-ion batteries limit self-discharge to less than 5% of the original capacity per month when batteries are stored at 20°C.
•
Excellent cost performance
 
Superior recharging properties ensure a service life of about 500 charge/discharge cycles under normal usage conditions. The superior cost/performance ratio ensures that lithium-ion batteries are ultimately more economical than primary batteries.

 

 



SPECIFICATIONS

Type
 Dimensions(mm)*1 Wei
-ght
(g)
*2		 Charge (CCCV) Discharge (CC) Nominal voltage (V) Mini
-mum capa
-city
(mAh)
*3

T×W×H		 Max. voltage (V) Max. current (A) End voltage (V) Max. current (A)
ICP403450AR 3.9±0.2
33.7±0.2
49.7+0/-0.5		 16 4.2 0.80 2.75 1.20 3.7 800
ICP463443SR 4.4±0.2
33.8±0.2
42.95+0/-0.5 		15 4.2 0.79 2.75 1.19 3.7 790
ICP463446AR 4.4±0.2
33.8±0.2
46.0+0/-0.5		 16 4.2 0.82 2.75 1.23 3.7 820
ICP463450AR 4.4±0.2
33.8±0.2
49.6+0/-0.5		 18 4.2 0.92 2.75 1.38 3.7 920
ICP483640SR 4.6±0.2
35.8±0.2
40.0+0/-0.5		 17 4.2 0.82 2.75 1.23 3.7 820
ICP533640SR 5.0±0.3
35.8±0.2
40.0+0/-0.5		 18 4.2 0.90 2.75 1.35 3.7 900
ICP553443AR 5.2±0.3
33.8±0.2
42.8+0/-0.5		 18 4.2 0.92 2.75 1.38 3.7 920
ICP553446AR 5.2±0.3
33.8±0.2
46.0+0/-0.5		 19 4.2 1.00 2.75 1.50 3.7 1000
ICP553450SR 5.2±0.3
33.8±0.2
49.6+0/-0.5 		21 4.2 1.15 2.75 1.73 3.7 1150
ICP653047AS 6.2±0.3
30.0±0.2
47.1+0/-0.5 		20 4.2 1.00 2.75 1.50 3.7 1000
ICP653443AR 6.2±0.3
33.8±0.2
42.6+0/-0.5 		21 4.2 1.10 2.75 1.65 3.7 1100
ICP653450AR 6.2±0.3
33.8±0.2
49.6+0/-0.5		 24 4.2 1.20 2.75 1.80 3.7 1200
ICP783640SR 7.5±0.3
35.8±0.2
40.0+0/-0.5 		25 4.2 1.35 2.75 2.01 3.7 1340
ICP803443AR 7.7±0.3
33.8±0.2
42.6+0/-0.5		 25 4.2 1.35 2.75 2.03 3.7 1350


Positive electrode: Lithium cobalt dioxide, Negative electrode: Graphite

*1: Dimensions of fresh cell without tube.
*2: Approximate value

*3: Capacity is according to the following conditions: Charge CCCV: 1C/4.2V/3h, Discharge 0.2C/E.V.=2.75V, Temperature 25 deg. C
Above specifications are subject to change without notice. For more detailed information and availability, please consult your Maxell representative

 

 

 

 

TYPICAL CHARACTERISTICS

Characteristics (ICP553450SR)

 

 

 

 

 

 

 

 

 

 

APPLICATIONS

Mobile Phones

PHS

PDAs

Electronic Dictionaries

Camcorders

Digital Still Cameras

Digital Audio Players
Portable Game Devices

 

 

 

 

NOTES FOR DESIGNERS

Select the correct type of battery to match the operating conditions such as load current, etc.

 

Charge conditions
To get the most out of lithium-ion batteries and use them safely, please read the following requirements carefully:

 

Charge mode Constant current, constant voltage charge
Charge voltage 4.20±0.05V / cell
Max. charge current 1C
Charge time Approx. 3 hours
Charge temperature 0 to +45 °C

 

Charge control flowchart (sample)

 

Refer to the following flowchart when designing constant current and constant voltage battery chargers.

 

 

 

 

 

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.