The ZBBridge-P constantly loses connection with devices

The ZBBridge-P constantly loses connection with devices, no matter what I’ve tried. I’ve changed its location relative to the WiFi router, changed power supplies, deleted all devices, deleted the bridge itself, reinstalled everything, all to no avail. I have two ZBBridge-P bridges. Six months ago, the other bridge behaved the same way. I disconnected it and installed the other one, and everything worked until yesterday. Since yesterday, everything has been glitching. I took the old bridge apart, and now I have a question: could a faulty battery be the cause?

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Short answer: no, the battery is not the cause.

In the ZBBridge-P, the internal battery does not power the Zigbee radio or the MCU.
Its only purpose is to keep the RTC / system clock running when external power is lost. Even a completely dead battery would at most cause incorrect time after reboot or scheduling issues.

It will not cause Zigbee devices to disconnect, routing instability, random dropouts ans network-wide glitches.

What you are seeing (working fine for months and then suddenly becoming unstable) is a well-known limitation of the ZBBridge-P as a Zigbee coordinator:

  • limited routing tables and memory,
  • poor resilience to 2.4 GHz Wi-Fi interference,
  • problems handling many sleepy end devices (e.g. IKEA, Aqara).

This is a gradual network degradation issue, not a battery or hardware failure.
Replacing the battery will not resolve it.

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solution?

I still haven’t found a solution. I’ve been struggling for a week. I deleted all devices along with the bridge and re-added them one by one, waiting ±12 hours to figure out which device is malfunctioning. Something similar happened about a year ago. As the support group explained, the ZB Micro was sending incorrect data or too much data to the bridge, causing everything to malfunction. I think I found the solution today. After adding ZBMINIR2, the bridge lost connection with the router, the green and blue indicators started blinking rapidly, and all devices were offline. Simply deleting ZBMINIR2 and rebooting the bridge didn’t help. I deleted ZBMINIR2, deleted the bridge, and re-added the bridge, and everything worked. I added the potentially problematic ZBMINIR2 to another, empty bridge and am monitoring. So far, ZBMINIR2 hasn’t shown any negative effects on the other bridge. Perhaps the problem occurs when other devices are connected to the bridge.

Hello and Happy New Year
First, my home setup: all the lights are controlled by the DualR3lite WiFi modules and two WiFi outlets. For my Zigbee network, I have the Bridge Pro router, two window sensors, and a thermostat.
It seems like a coincidence. Last night, while reading your reply, I leaned against the radiator and felt it was cold. I checked, and the heating hadn’t turned on.
The command is given by the Zigbee thermostat with scenarios to turn them on. The modules were offline, the bridge was online, and an update was available. I updated, the bridge went offline, then came back online, and the devices came back online. I don’t understand what could have happened; personally, I don’t like commands created with scenarios. At my son’s house, which has about 20 Zigbee modules, there are frequent disconnections, as I mentioned in a previous post.

Every Zigbee environment is different, so it’s hard to draw any general conclusions from such a brief description. Frequent disconnections can be caused by many unrelated factors — or sometimes by several small ones combined — so it’s not something that can be diagnosed just by comparing two setups.

In my case the Zigbee network is very stable. I actually run two Zigbee networks in parallel, plus a Wi‑Fi mesh, DECT, BLE and a large number of neighbouring Wi‑Fi networks around me. Apart from occasional short‑lived interference, I don’t see any serious issues or unexpected disconnections. That may be because I planned my Zigbee networks quite carefully and experimentally adjusted the placement of routers and end devices to get optimal coverage.

So it’s not all as simple as advertised, maybe a general guide on how to set up the wifi line wouldn’t be bad