The US department of Transportation FAA (Federal Aviation Administration) has regulated on some kinds of batteries for carry-on luggage (in the aircraft cabin) and checked baggage ( in the hold).
Spare (uninstalled) Lithium ion batteries, which do not contain more than 8 grams of equivalent lithium content (as regards the complete package, not only single cell), are not restricted for carry-on luggage, when they are protected from damage and short circuit.
Please be informed, that passengers are not allowed to put extra or spare batteries into checked baggage.
All Fujitsu Siemens Computers Notebooks and handhelds of the past, now ( February 2008) and in the future are using and will use batteries which are compliant to this limitation.
Please find the link for the US FAA:
Battery certificates including statement of compliance are available at http://extranet.fujitsu-siemens.com/product_catalog.html see technical media.
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A lithium-ion battery only provides a limited number of discharge/charging cycles.
Several factors have an impact on Lithium-based batteries regarding their lifetime
and capacity.
This is due to the current battery technology and lithium chemistry.
Items that have effect on lifetime are:
- temperature - capacity - charging - discharging
Generally, a high constant charge level at elevated temperature leads to permanent loss of capacity.
.Please avoid a deep discharge of the lithium-ion battery as this will also result in loss of capacity.
Additional Information
A) Maintenance
To maintain the original battery capacity for as long as possible, please also note the details given in the Notebook system manual.
A lithium-ion battery supports between 300 and 500 discharge/charge cycles. Any incomplete discharge/charge cycle (every contact to main supply) is counted as a complete discharge/charge cycle and decreases the remaining number of useable cycles.
The lithium related cell is also subjected to an ageing process, independent from the usage. Lithium-based batteries have a lifetime of 2-3 years, given an optimum of maintenance. This life span starts as soon as the battery is constructed. This loss of capacity is caused by an increase of internal resistance due to oxidation.
Insufficient maintenance of batteries will obviously shorten capacity and lifetime.
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Working at normal room temperature is best to maintain
capacity.
Impact on battery lifetime and premature capacity loss
are:
- low temperature (long-lasting storage at or below freezing can permanently
reduce capacity)
- storage and operation at high temperature
- long period of battery usage with AC adapter and main supply connected
- storage of the system over a long period with fitted battery (it cause deep
discharge).
To store the battery without the system: If possible, store the battery in a
cool dry place with a 10%-30% charging level.
Some reserve charge is needed to keep the battery and its protection circuit
operational during prolonged storage.
To prevent deep discharge, regularly check the charging level and recharge the
battery to the stated partial charge if necessary.
Charge the battery completely before using it again in
a system.
B) Recommendations for service issues
Complete failure in a period less than 6 month from Notebook initial purchase
- The battery may be replaced according to FSC service and warranty terms and
conditions.