what to expect???

[ikookal]

Hello everybody,

I´m a designer of lamps and I´m considering using batteries in a certain model..
the thing is I know absolutely nothing about batteries and I would like to know your opnion on wether you think it will be worth investigating the possibility of using batteries.

As the lightsource I´m thinking of using 4 "p9" LED´s of 150 mA and 0,5W.
the lamp´s body would be a narrow tube shape with a diameter of more or less 10 mm and a wall thickness of 1 (or so) and about 200mm long so in theory I´d have about 10 cm3 to put a (rechargable) battery..

I do have a good budget so there´s no need for looking for the cheapest solution, more important is a good solution.

now I´d like to know what you people think..

what kind of baterie life could i expect (i understand this will be rough guesses)will it be 2 hours or could it be 100 hours or so,

this is a very important detail and will determine wether to go for this solution or change the principle of the lamp drastically.
In case of using batteries the lamp would more or less be an oversize flashlight on a stick..

does this sound do-able to you?

thanks a lot in advance

 

[itsmoked]

No go.. That diameter excludes the most common rechargeables.

Perhaps the base is usable?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[ikookal]

all the sizes are still open more or less, if that would increase the possibilities i could use a bigger diameter (to use AAA size?) or couldn´t i use custom made smaller batteries?

i put the sizes there more to just have an idea that I won´t be using submarine batteries...

the question is in a nutshell what kind of battery life i could have with today´s batteries with more or less these dimensions and Led´s .

so maybe the question would have to be what i could achieve with let´s say two AAA batteries..?

 

[IRstuff]

The nominal diameter of a AAA is 10 mm. Your specified volume would allow for 3 AAA batteries, not counting the connection hardware.

However, your current draw is high enough that the projected life of a AAA is only about 2 hrs.

TTFN

FAQ731-376