WisMesh MQTT Gateway PoE+Battery

Brandoney · June 23, 2025, 10:28pm

WisMesh Ethernet MQTT Gateway with PoE

Environment Sensor BOSCH BME680 | RAK1906

Can I power the whole package with PoE and add a battery to keep the device running when PoE power goes out? Will PoE charge the battery?

beegee · June 24, 2025, 1:10am

Welcome to the forum @Brandoney

Yes, the PoE will charge the battery. And the battery will keep the device powered up.

Brandoney · July 13, 2025, 8:17am

What size battery do you recommend? What is largest size that will fit in the gateway?

beegee · July 13, 2025, 9:07am

No space for a battery if you buy the pre-assembled version:

Brandoney · July 13, 2025, 11:34pm

Thanks for the reply. I found a 2200mAh LiPo 11 x 34.5 x 52mm that might fit above the core, between antenna and Ethernet cable if I stick it to the lid. Is it safe to put one there? Will it interfere with core or antenna?

beegee · July 14, 2025, 1:49am

It might influence the performance of the BLE antenna.
The LoRa antenna is external, the battery will have no influence on it.

Brandoney · July 14, 2025, 2:28am

Thanks. It’s only $10. I’ll try it. I wonder how long 2200mAh will keep the device running. MQTT won’t be connected if PoE goes out, but I would like it to stay on during brief power outages.