Is this voltage enough for 4x Seoul P4?

[niverin]

Hello,
I am going to build my DIY bike light made of 3x Seoul Z-LED P4 U-bin and I have bought Li-ion 14.8V 5200mAh battery for driving it.
But I realized that this voltage maybe could be enough for 4 LEDs, because there is written in it's datasheed that typical forward voltage is 3.25V.
I am going to use bFlex as a driver that should need 1.1V.
So it is 3.25x4+1.1V = 14.1V
Does it means that I can use 4 LEDs with this battery pack?

Thank you very much!

 

[cmacclel]

Hello,
I am going to build my DIY bike light made of 3x Seoul Z-LED P4 U-bin and I have bought Li-ion 14.8V 5200mAh battery for driving it.
But I realized that this voltage maybe could be enough for 4 LEDs, because there is written in it's datasheed that typical forward voltage is 3.25V.
I am going to use bFlex as a driver that should need 1.1V.
So it is 3.25x4+1.1V = 14.1V
Does it means that I can use 4 LEDs with this battery pack?

Thank you very much!

If your going to use a BFlex you should have gotten a 5 or 6 cell battery pack.


Mac

 

[niverin]

If your going to use a BFlex you should have gotten a 5 or 6 cell battery pack.


Mac

I bought this battery http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2939
It will be enough?

 

[tino_ale]

When depleted, your pack will be 3V/cell=12V total which won't be enough.
I susect you will be able to run regulated during some time, then fall unregulated as your batts will decharge.

 

[niverin]

OK, thank you, I thought the same you said...I will have to stay with my original plan with 3 LEDs

 

[Bunk3r]

if your sticking with 3 LEDs and want some regulation it might be worth looking at http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=2982 i had just looked at it before reading your post and figured it might be useful!

 

[niverin]

if your sticking with 3 LEDs and want some regulation it might be worth looking at http://www.kaidomain.com/WEBUI/ProductDetail.aspx?TranID=2982 i had just looked at it before reading your post and figured it might be useful!

Hello Bunk3r,
thank you for the link but I already have a bFlex which should be good for regulation.
But this driver is very cheap! :thumbsup: