Safe chemistry MPPT solar charger

Hardware
21

Another alternatives are maybe:

Adafruit 5714: RP2040 with RFM95 LoRa Radio and built-in battery charging: Adafruit Feather RP2040 with RFM95 LoRa Radio - 915MHz [RadioFruit and STEMMA QT] : Adafruit Industries, Unique & fun DIY electronics and kits

or

Soldered NULA DeepSleep ESP32-S3 without LoRa, but with built-in battery charging: NULA DeepSleep ESP32-S3 Dev Board - 7µA Low Power – Soldered Electronics

But i often heared that ESP32 will consume more that other…

22

Thanks. However neither of these are designed for safe battery chemistries which was the subject of the topic.

The solar mesh baseboard is multi-chemistry.