ESP32 Forum

Hello guys,
I need little help for realizing my little project
Please look at attached picture. I want to set up a control of led strip with esp32 and chargable battery.
I would like to try first steps but I have no idea for a smart solution. Thanks for your ideas.
Markus from Switzerland

There's no such thing as a '5V battery'. Do you mean a power bank? If so, you need to pick one that allows charging while providing power, and you should then be able to just plug your USB charger into the power bank.

Thanks.
With "5V-Battery" I mean any power supply pack, that is rechargeable and can supply my 5 Volt LED strip AND esp32 both. Is there a way to use the USB port of the esp32 to charge the battery pack?

Not easily, sorry.

5V power banks contain a LIPO battery, a boost circuit to generate +5V out normally via a USB A socket, and a charger circuit typically with a micro USB input. They are available in various capacities from 2500maH upwards.

So you can connect a standard phone type charger into the micro socket for charging, and connect the USB 5V output to your ESP32,

Note that some power banks do not provide power out while they are charging so operation while charging is important to you then check for one that does.

The alternative is to use a LIPO battery and add your own charger and boost module which can be got very cheaply.

Can you give more detail of this project. You have Supply voltage and LEDs and then what you plan to do?

Now I get it, you want to charge the battery and power your LEDs from ESP board. There is 3.3V out of the ESP board, use a booster circuit to pump the voltage up, you will run into a problem, the current will be not be sufficient for this.

kmmaran: the other issue is that the ESP32 board is going to be powered from the power bank when it's not charging as well... so the 3V3 line is always on, so a boost converter would effectively charge the power bank from itself.

Thank you for your answers. I will try your ideas with charge module, boost module and Lipo Battery..