# ESP8266 circuit with an LED

I'm building a project where I use an ESP8266 module to control a LED with my smartphone. For my project I want to battery power the ESP8266 and the LED so I'm using two Lithium Ion batteries. I've designed a circuit which works but I was wondering if there are more efficient ways of powering this circuit because I'm currently using a step down module in my circuit to power the ESP8266. Everything works perfectly but I don't think I've come up with the best circuit for this project

I know the driving circuit part for the LED is not the most efficient but I've already asked a question about that on this forum to help me fix that. The problem I have now is that I'm wondering if there's a need for a step down module to power both the LED ( LED is a 3 watt power LED) and the ESP8266. Are there any alternatives to this circuit that are more efficient? Is the step down module necessary?

P.S. I apologize for my drawing skills I'm not an electrical engineer so I'm not used to using the right symbols for everything

• Possible duplicate of Using a LED with an ESP8266 module – Chris Stratton Apr 11 '19 at 0:16
• DO NOT REPOST. edit your original question to fix the mistakes – Chris Stratton Apr 11 '19 at 0:16
• It's not a repost it's an entirely different question but it is part of the same project I asked a question about earlier that's why it has the same keywords – B913 Apr 11 '19 at 0:17
• It's really not different - the major power draw is still the LED. Same problem, belongs in the same question. – Chris Stratton Apr 11 '19 at 0:18
• Alright I'll try to add in this in my other question my aplogies – B913 Apr 11 '19 at 0:19