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Oh, now I understand why your battery lasts 10 years 😃. See mine in the picture I posted somewhere earlier in the conversation. It’s a micro battery HB414 II06E.  ... Mehr anzeigen

But the problem is that I have no idea whether it's a battery, a rechargeable battery, or a capacitor. On the forums where I found the battery type they referred to it in three different ways :). The electronic engineer that soldered it to the board advised me to wait for a couple of hours before I make a first test, so he assumed it's a rechargeable battery.   What's interesting, when I check the voltage level with a multimeter, it shows 0 V (zero). I'm not experienced enough to tell if that's normal or not. If it was a capacitor, then I'd say yes, but for a rechargeable battery? ... Mehr anzeigen

If that's the case, then something may be wrong with the battery I have. I don't know... In fact, however, I've had the boiler for over 10 years now, and the original battery died at least a couple of years ago. Thanks for the response. ... Mehr anzeigen

@Fiedel, just out of curiosity, do you mean that the battery in your case is able to sustain the timer for several years when you unplug the boiler or remove the panel? Or do you mean that the battery should be able to sustain battery for the couple of hours throughout years whenever there is a short power outage? 🙂 ... Mehr anzeigen

A couple of days ago there was a power outage for around two hours in my area. Even though I replaced the battery a couple of months earlier (so it's brand new), the time was reset during that period and it had to be set manually again.   So either something is wrong with the battery I bought, or its capacity does not ensure that the time will be sustained for more than the two hours, roughly. That's better than nothing, but compared to computer motherboard batteries which last for years, it's a joke. ... Mehr anzeigen

BTW, I noticed recently that the ViCare app does have an option in the boiler settings to set the clock. I'm not sure if it was there from the very beginning of if it was recently added. While it's already there, I hope they are one step from implementing automatic synchronization, but let's see what they say :). ... Mehr anzeigen

@joeH68, my boiler model is Vitodens 200-W WB2C (26 kW).   @Fiedel, while researching about the clock resetting issue, I learned that later models do have a replaceable battery, but can't tell for sure and can't list them.   If you wan't to check your module what battery it contains, its the LCD panel at the front of your boiler. You can remove it easily by pulling one of its sides (the left probably?), then remove its back cover. You can see the battery in the picture I attached here. Of course be careful and do it with the boiler disconnected from the grid ;). ... Mehr anzeigen

I have a boiler bought over 10 years ago, and the internal battery died a long time ago. I had a real journey to address the issue.   1. I had to coincidentally learn that it is caused by a dead battery and understand that it is not a normal behavior of the boiler. I learned that on the phone support line when described the problem and asked why the internal clock is not synced with the cloud by the gateway. 2. I had to learn that the battery is hard-mounted somewhere on the PCB and cannot be replaced easily. I spent a long while looking for it without success. 3. I finally called for a service person to come and show me where the battery is located. 4. I spent a lot of time scouring internet forums looking for any clue on the symbol of the battery (HB414 II06E in my case if anyone may find it useful). 5. I spent hours looking for the battery on various online stores with no luck. 6. I was eventually lucky to coincidentally find the battery on AliExpress weeks later, and waited a month before it was shipped. 7. When it arrived, I had to pay an electronic engineer to replace it, hoping the module won't get damaged.   This is what it took me to address the clock resetting problem, initially having no idea about the cause and how to solve it.   I have no slightest idea why the gateway doesn't sync the clock automatically! For me, this is one of the primary features this device should handle. ... Mehr anzeigen