From gdt at lexort.com Tue Mar 11 11:54:41 2025 From: gdt at lexort.com (Greg Troxel) Date: Tue, 11 Mar 2025 07:54:41 -0400 Subject: [Nut-upsdev] eco mode insight, maybe Message-ID: I was looking at the manual for a cyberpower CPS1500AVRLCD3: https://m.media-amazon.com/images/I/A1-K2cO6SbL.pdf and noticed they call this "GreenPower" which is probably one of many flavors of ECO :-) In this case, they say that they don't power the transformer in normal operation, persumably switching with relays to power it for voltage step up/down during low/high voltage, and turning on the inverter for missing voltage. Obviously they must have some power supply for control electronics and maybe trickle charge of the battery. From jimklimov+nut at gmail.com Tue Mar 11 12:26:23 2025 From: jimklimov+nut at gmail.com (Jim Klimov) Date: Tue, 11 Mar 2025 13:26:23 +0100 Subject: [Nut-upsdev] eco mode insight, maybe In-Reply-To: References: Message-ID: Discussion at https://github.com/networkupstools/nut/pull/2837#issuecomment-2710802065 tells us that EcoFlow devices may be doing something similar. Worse, the `battery.runtime` reports depend greatly on whether it is charged or being used. From the post: - > * The battery.runtime has different meaning/value while the power station is ONLINE (in UPS, or pass-through mode) and when it is DISCHARGING. - > * I have Anker and Ecoflow models and their respective smartphone application, while ONLINE shows somewhere around one-and-two-thirds of a day running time. I asked them why? Why show a value instead of OnGrid, or ONLINE. Here is the answer I received from Ecoflow: > > "When the device is fully charged to 100%, the battery will stop charging, but it will continue to power the device's internal systems, such as the Battery Management System (BMS) and the cooling fan. These systems will gradually consume the battery's power, and the time listed is the duration the battery can sustain this power in its current state. However, once the battery level drops to 97%, it will automatically start charging again." So my guessy take on this is that the load is also normally fed from the wall, just some internal electronics (controller, fan) is fed from battery to be always available - and its power draw is so small that it would survive for about 40hrs if left alone, and that is what the reading represents then. When wall power goes out, the load on the battery increases and the numbers drop suddenly. > * The current Ecoflow firmware does not return an UPS Load value. Without that you can't (even programmatically) have a Run Time value. So you get the battery.runtime instead :) So until the power goes out, they even have no way to predict how much that would stress the battery/transformer/inverter/... Oh joy. Jim On Tue, Mar 11, 2025 at 12:54?PM Greg Troxel via Nut-upsdev < nut-upsdev at alioth-lists.debian.net> wrote: > I was looking at the manual for a cyberpower CPS1500AVRLCD3: > > https://m.media-amazon.com/images/I/A1-K2cO6SbL.pdf > > and noticed they call this "GreenPower" which is probably one of many > flavors of ECO :-) > > In this case, they say that they don't power the transformer in normal > operation, persumably switching with relays to power it for voltage step > up/down during low/high voltage, and turning on the inverter for missing > voltage. Obviously they must have some power supply for control > electronics and maybe trickle charge of the battery. > > > _______________________________________________ > Nut-upsdev mailing list > Nut-upsdev at alioth-lists.debian.net > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsdev > -------------- next part -------------- An HTML attachment was scrubbed... URL: