With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
We have a be nice comment policy. Please be positive and constructive.
We noticed you attached photosto your comment.
You need a minimum of 18VDC at 1/4Amp.
It could be done with two 9V batteries also in series, But why not run each on its own nine volt battery.
Also you will only have a few minutes time on an alkaline battery and the cost of a Li is prohibitive.
Try 6 AA batteries in series as a minimum and run the lights in parallel.
Because of very limited space, 6 AAA batterys should work but I dont know how long would they last.
A typical alkaline AAA has a 860–1,200 mah rating so at 250ma times two sets is 500 ma.
860ma-hrs/500ma = 1:43 low end to 1200ma-hrs/500ma 2:24 high end..
An AA Battery can deliver 2600ma-hrs/500ma = 5.2hrs => 5:12
Your answer is within your question.If they are 9V and each has 3W they need at least 660mA to work - far more than what a 9V battery can supply.Your link is not working, so I can't check the data for the LED's but if they are without the regulating electronics you will need a suitable LED driver board for them.
I hope this link works
100 Watt Light Saber
Homemade LM317 Bench Power Supply
Make a Proximity Sensor,Remote detector,Light Sensor in a single circuit
Redneck but kinda geeky cheap LED bike light
A Powerful Rechargeable Flashlight
3D Printed - Powerful LED POI
Repair Dead COB LED Light Bulbs
Lampara Led Facil 36w
Parallel and Series Circuit
How to make a powerful flashlight with just $2
Posted:Sep 29, 2015
Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!
© 2016 Autodesk, Inc.