Powering ESP32-S3 with rechargeable battery

PhilAJ52
Posts: 18
Joined: Tue Sep 05, 2023 10:28 am

Powering ESP32-S3 with rechargeable battery

Postby PhilAJ52 » Sat Nov 18, 2023 5:36 pm

I've got an application all developed and ready to go using the ESP3-S3-BOX-LITE devkit - with power from the USB.

Now I need to find a way to power the board using a rechargeable battery - preferably with onboard recharge capability.

We may be looking at repackaging the basic board, battery etc into a new mounting or box - but first, we need some help with the power.

Is there anyone who could help with advice - or maybe would be interested in helping to get our final product produced for a fee?

Phil

Agree007
Posts: 103
Joined: Mon Sep 18, 2017 7:11 pm
Location: Copenhagen

Re: Powering ESP32-S3 with rechargeable battery

Postby Agree007 » Sat Nov 18, 2023 6:02 pm

What are the requirement, how long should it run on the battery ? does it use wifi ? Bluetooth ? Do you know how many milli Amp it require ?

PhilAJ52
Posts: 18
Joined: Tue Sep 05, 2023 10:28 am

Re: Powering ESP32-S3 with rechargeable battery

Postby PhilAJ52 » Sun Nov 19, 2023 7:40 am

We are using BLE and the display - nothing else. Don't need the buttons, the wifi, or voice. The program is just receiving commands from an App and displaying various graphics. Ideally would like the power on for 8 - 10 hours per day if possible between charge.

Agree007
Posts: 103
Joined: Mon Sep 18, 2017 7:11 pm
Location: Copenhagen

Re: Powering ESP32-S3 with rechargeable battery

Postby Agree007 » Tue Nov 21, 2023 8:26 am

Bluetooth use less power than WiFi, so it should be possible. If you measure the current used, you can calculate the required for the batteries. Suggest you try to run it with a power bank and see how long time it will run. Just make sure the power bank dont shutdown when low current is required.

PhilAJ52
Posts: 18
Joined: Tue Sep 05, 2023 10:28 am

Re: Powering ESP32-S3 with rechargeable battery

Postby PhilAJ52 » Tue Nov 21, 2023 10:38 am

Thanks for the suggestion.

I have tried using batteries - but unsure where to connect. The Datasheet shows that the connectors have a number of 3v, 5v and Grnd connections - but I've tried various combinations and don't seem to get it to work.

I'm a software guy - not an engineer - so any help appreciated on how to connect.

Agree007
Posts: 103
Joined: Mon Sep 18, 2017 7:11 pm
Location: Copenhagen

Re: Powering ESP32-S3 with rechargeable battery

Postby Agree007 » Tue Nov 21, 2023 6:37 pm

I dont have any ESP3-S3-BOX-LITE so cant tell.

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