Solar Power Manger BAT_IN: LiPo and FireBeetle
Andy_A 2025-06-30 20:06:00 1851 Views4 Replies Hi there,
I'm planing to build an ESP32-S3 based battery powered project.
Planed (main) products are:
→ DFR0559 Solar Power Manager 5V (https://www.dfrobot.com/product-1712.html)
→ DFR0975 FireBeetle 2 ESP32-S3 (https://www.dfrobot.com/product-2676.html)
Q: Is it possible to connect like this:
LiPo (+) → Solar Power Manger (+) JST PH2.0
Lipo (-) → Solar Power Manger (-) JST PH2.0
That setup sounds pretty practical, especially since the FireBeetle can handle the battery management and keep the ESP32-S3 running efficiently.
stephen.hanks Is this what you are meaning ?
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If so, could the DFRobot Solar Charger DFR0264 be used instead of the DFR0559, with the DFR0264's VOUT connected to the Firebeetle's JST PH2.0 LiPo Battery connector ?
The DFR0559 has advantages over DFR0264 - higher max charge current, and being able to charge from USB (eg a powerbank) as well from a solar panel - but we don't always need the extra features.
don.burch YES !! Two months now using DFR0264 with one of the ESP32-S3 development boards that have LiPo connector and charger included (such as a Firebeetle 2). The devboard uses low-power components, so the battery lasts much longer than with the old ESP32-S3-Devkit-C.
The DFR0264 does not try to buck/boost the battery's output - so it is ideal to connect direct to the ESP32's battery connector. Battery is charged from the solar panel -or- from the devboard's USB.
Yes, it is possible to connect the DFR0559 Solar Power Manager 5V to the DFR0975 FireBeetle 2 ESP32-S3 as you described. You can connect the Solar Power Manager's positive (+) screw terminal to the FireBeetle's PH2.0 positive (+) terminal and the negative (-) screw terminal to the FireBeetle's PH2.0 negative (-) terminal. This setup should allow you to utilize the AXP313A power management chip on the FireBeetle 2 ESP32-S3 for monitoring the battery without needing additional components.
JaneYu 
