These things are driving me crazy. I have about 10 temp sensors throughout my RV and 3-4 have low batteries… i know i get it.. they’ve been low for a year and yet still keep ticking along. They’re in a spot I can’t access (under solar panels) and once they die or I start rebuilding I’ll get them swapped out. Also they’re not that low if they’re still working a year later.
Is there any way to disable these warnings/alarms completely on my CerboGX? I LOVE the integration and super happy don’t get me wrong but would love it a bit more if there wasn’t a red bar on VRM 24/7 and yellow triangle on the screen.
What’s weird is another one is 2.54 or so and not low but I think those two keep going in and out from low and ok. Ones in the fridge and the other is on a generator radiator (the waterproof Ruuvi). It’s 30F today and getting down to like 10F tonight I think so worst for these batteries… but these will be right above freezing
Taking a look at the ble driver, the alarm limits are set as follow:
If temperature is between -40 ↔ -20 deg.C, the voltage limit is 2.0 volts.
If temperature is between -20 ↔ 0 deg.C, the voltage limit is 2.3 volts.
Above 0 deg.C, the voltage limit is 2.5V.
As soon as a voltage drops below these voltage limits, an alarm triggers.
So change the batteries accordingly…
I had a lot of warnings in the range of about ~2,5V at temperautres from 0°C…10°C. This is way too early… For me it was easy to change the battery, but it is still annoying.
The VRM alarms rules only apply to alarms sent to your phone. The Ruuvi battery alarms are on the GX device, which are nothing to do with VRM and would occur even if you were not connected to VRM.
I wish Victron would fix this. It’s been annoying me for a year. There’s no need for an alarm for a low battery in a temperature monitor (how about just alarming if the monitor disappears, ie, fully dies?). At the very least they should give an option to disable this alarm. It causes the GX display to never go to sleep until you dismiss the alarm, which I have to do daily.
The Ruuvi batteries are relatively expensive and they last for many months beyond the voltage that Victron starts alarming at. So replacing hardware (batteries) for what is essentially a Victron software defect isn’t a good solution.
I have 4 Ruvvi low batt alerts and they’ve been alarming for like a year. I can’t believe there’s no way to remove this alarm or anything.
This post was 6 months ago and still not a single one has even died. I have them under solar panels on the roof and in my fridge and on the engine and genny radiators so in extreme environments and the battery lasts a long time. It doesn’t make sense to replace a battery that has half its life left even if it was easy to get to.
Temp sensors generally aren’t super important so an alert isn’t really needed. I will say that my RV is stainless steel (Prevost) and some Ruuvi sensors don’t check in consistently which is fine, but it’ll be annoying if they have a dead alarm that constantly goes off.
I’m not sure why they don’t have the voltage and status baked in like everything else. We can set temp alarms so why not voltage?
