Defo better but not the best but you should achieve around 90% or more efficiency with normal load from ESP, maybe 0.5 day more. If you look at efficiency curve you will notice that it is terrible for low current which is the problem here.
BTW you should use Buck/Boost converter as operating voltage of 18650 is from 3v-4.2v
It’s also quite important to note that efficiency during deep sleep will most likely drop to as low as 50% or even less…
Actually put an output from your DC/DC converter to 3V this will most likely give you bit more juice out of battery.
Hi there!
I’m using a really small battery (700mAh) and my system is still alive since last Thursday… 6 days at the moment…
As the Wemos is powered using the micro usb, I’m using a step-up DC-DC converter (from 3.7 to 5v)
next thing desolder all the LEDs that are on the board. As for DCDC converter I don’t really se the point to make custom design unless you wanna sell this stuff just use the last one you mentioned. Lastly what you can do is set static IP this will reduce time to connect to AP.
I’ve only been able to get my Blynk sensor to run for about 35min on a single battery without charging.
Thats transmitting every 10 seconds without deep sleep because when it goes to sleep it never wakes up. Im using a ModeMCU ESP8266.
I have the really cheapo chinese 18650’s marked as 4400mAh (but think they’re more like 900mAh doh!)