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Lithium-ion battery technology: 
Getting the most from Smart Batteries 
 

 

Abstract.............................................................................................................................................. 2

 

Introduction......................................................................................................................................... 2

 

Lithium-ion batteries.............................................................................................................................. 2

 

Battery cycle life............................................................................................................................... 3

 

Battery capacity ............................................................................................................................... 3

 

Warranty period.............................................................................................................................. 4

 

Smart Battery Technology ..................................................................................................................... 5

 

Smart Battery calibration................................................................................................................... 5

 

Battery care practices........................................................................................................................... 6

 

For more information............................................................................................................................ 7

 

 

 

Summary of Contents for Lithium-ion battery

Page 1: ...the most from Smart Batteries Abstract 2 Introduction 2 Lithium ion batteries 2 Battery cycle life 3 Battery capacity 3 Warranty period 4 Smart Battery Technology 5 Smart Battery calibration 5 Battery care practices 6 For more information 7 ...

Page 2: ... of Li Ion battery cells cylindrical prismatic and polymer The cylindrical cells are approximately 18 mm 0 7 in in diameter by 65 mm 2 6 in in length and they are commonly referred to as 18650 cells These cells are frequently used in battery packs that are about 20 mm 0 8 in thick Prismatic cells have a slim rectangular form factor the most common types are 6 cell and 8 cell Li Ion battery packs t...

Page 3: ...ed in watt hours Wh is the product of the battery capacity Ah and the battery voltage V The operating voltage range of a Li Ion battery pack remains relatively constant throughout its useful life however its capacity begins to decrease in a roughly linear manner as soon as it is put into service New batteries are classified by their rated capacity Over time the actual battery capacity decreases du...

Page 4: ...the battery almost every working day 300 cycles per year in a normal environment The second profile is for a stationary user who only cycles the battery once per week in a high temperature environment such as in a docking station As shown in the table the additional heat generated by running high power applications or by using a docking station accelerates the loss of capacity Table 1 Full charge ...

Page 5: ...also prevents data loss that can occur during the Hibernation process if sufficient power is not available to complete critical save to disk operations Smart Batteries calibrate their FCC each time they undergo a full discharge charge cycle whether they are recharged in the notebook or in a stand alone charger conditioner Calibration using the notebook is less convenient because it can take up to ...

Page 6: ...es the loss of capacity For example playing 3D games will lower FCC faster than using word processing applications Recommendations for battery use and storage are covered in the HP User Guides for each model Additional battery care practices are as follows Store Li Ion batteries between 20 C and 25 C 68 F and 77 F with 30 to 50 charge Do not leave batteries exposed to high temperatures for extende...

Page 7: ...orum http www sbs forum org The information provided by these resources may not apply to all systems Copyright 2004 Hewlett Packard Development Company L P The information contained herein is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as...

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