ENGINEERING.com has updated it's forum.  To post a question please visit the new Ask@ Forum.   

With a database of over 10000 questions the library will remain available for an extended period.

Q&A


tatasal
Which type of battery will give "brightest" performance to an 8-AA LED flashlight? 1.5v lithium or 1.2v NiMH? View All


12 years ago - 10 months left to answer. - 2 responses - Report Abuse
Respond to question
    0      [lnkReport]        0       0       
Share |
  Responses


Niel
8 x 1.5 volts = 12V
8 x 1.2 volts = 9.6V

As a result I would expect the Lithium batteries to result in brighter LED's.

The only concern would be the LED's ability to dissipate the extra current. They may be be brighter only for a short period of time.

Niel Leon
engineering.com


12 years ago

Source:


  0     0         

Stephen.Lewis
I=E/R is the answer to your question. The higher the voltage the greater your current, the brighter your LED.

12 years ago

Source: http://www.hnsa.org/doc/neets/mod19.pdf


  0     0         

ENGINEERING.com does not provide engineering advice. The Ask@ service is a forum for members to exchange ideas relating to the world of engineering. We caution users not to accept any responses that they receive without further validation, and not to rely on any engineering advice that they may get from other members of the Ask@ forum. ENGINEERING.com specifically disclaims any obligation to validate or verify any information posted within the Ask@ service. ENGINEERING.com encourages users to seek the services of a professional engineer for any engineering advice they may require.