I need help powering a very powerful LED on batteries. Can anyone help me clearer understand mA and how that affects mAh rating on batteries?
Also if anyone can advise me on what's the best direction to go into with my build.
- I need to power a 20w LED or 50w led
- on batteries. I picked out 3.7v lithium rechargables- **broken link removed**
- 50w led (2600 mA draw 24-26 v)
- 20w led (1500 mA draw 14-16 v)
My big question is there a way to power either led with like a homemade driver that will supply constant current of 22 or 20v for 50 w led or 14v for 20w led? If so how long would it last on those batteries? Could someone help me design a driver? Maybe with some extra functions like 4 step voltage control so ie: 22v 16v 12v and 8v on a switch?
If anyone can help me out that would be really great. I want to finish this project for a school related project and need a bunch of help. Got an idea going but need the electronics advice!
If you need more info I can let you know.
Thanks!