×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

lithium batteries

lithium batteries

lithium batteries

(OP)
  
Somewhere I have read that lithium batteries are prohibited on airlines...but lithium-ion batteries are pervasive in cameras and laptop computers.  Also, I use lithium/ferric-sulphide cells [Eveready L91]  in portable CD players.  How do the TSA folks handle this for carry-on baggage?
  
 

RE: lithium batteries

(OP)
 
Thanks sincerely, geekEE.
   

RE: lithium batteries

I was responsible for safety on a large airborne radar system some time ago. For fault reporting memory backup, it utilised a bank of quite large rechargeable lithium batteries, in a series/parallel configuration. At the time, lithium batteries were known to be somewhat risky, and we went to enormous trouble to ensure that the additional risks due to the bank of lithium cells didn't hazard the aircraft - significantly.
  
At the time commercial airliners were very strict in what could be carried, but as serious camera batteries grew larger, I noticed that the restrictions on them gradually lessened, and kept pace with usage in the real world! A good example of "commercial" engineering...

Malcolm Stewart
Milton Keynes, UK

RE: lithium batteries

Seems to me that it still wouldn't be needed, since flash memories have the speed and capacity to store gobs of data without any battery requirement.

TTFN

FAQ731-376: Eng-Tips.com Forum Policies

RE: lithium batteries

Unfortunately, our problem was adding a then modern requirement, fault reporting, to a system originally designed in the 70s well before flash memory came on the scene.  And the user also came up with the requirement that faults had to be readable up to 2 weeks after the plane had landed. If we'd been allowed to redesign the system, we  would certainly have chosen a better way of meeting our user's new requirement.

Malcolm Stewart
Milton Keynes, UK

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources