I have purchased two C1000 with backup batteries. One is located in the kitchen for the refrigerator and the other in the garage for the freezer. I bought the kitchen power source, initially without the expansion battery, for short term power outages running in UPS mode. The outages tend to happen in the summer where power usually will go out no longer than a few hours at a time. I tested the source before I bought the expansion battery and it lasted more than 9 hours. It was losing about 8% battery life every hour on average. I stopped the test before it went below 10%. I happened to order the second C1000 with the BP1000 just before hurricane Milton formed and unfortunately, I didn't receive it until after the hurricane passed. I also ordered the BP1000 for the kitchen power source, after the storm, for handling the longer outages. The kitchen C1000 stayed connected while I was running parts of the house on either generator or my larger F2600 with its expansion battery. It worked as a backup to the backup and never had any issues. The fridge would continue to run while I swapped back and forth between generator and the F2600. During the outage, it was accessible through Bluetooth from around the house and allowed me to monitor power consumption which told me everything was working as I had hoped. The two C1000+BP will now run 100% of the time in UPS mode and the F2600+BP will be connected to my generator sub-panel during any long term outages. The combination of the three sources + generator will allow me to run the generator no more than 6 hours a day conserving propane and gas in the event of a long term loss of fuel.
I plan on replacing a few UPS units in the house with more power sources as the older UPS SLA batteries have a short run time and short life.

Both units were received with older firmware and they updated without issues. Just remember that if it is updated while the unit is in operation, that the output might be disabled afterward. It happened on both sources and the output had to be manually turned on.

The only recommendations I would have for improvement would be...
1. Allow the user to set a minimum percent of battery life before it shuts off. This way you could prevent the source from reaching 0%. The same feature should also be available for the expansion batteries.
2. Provide a way to download data for processing in a spreadsheet (ie csv). I want to monitor the power source's average power output on the different connectors. I would like it mostly for the AC output to use it as a glorified Kill a watt meter.

providing continuous power for water heater controls. Easy to install and monitor w/ wifi connections.

I can't praise this system enough! Everything works amazing!!! The only thing I wish they'd change is the ability to solar charge and ac charge at the same time.

I haven't used it yet,so I'm assuming it will work properly when needed. Check back after winter!

Packaging was excellent. Unit arrived unscathed. Performance was good. It ran a full size refrigerator/freezer for 7 1/2 hours. It recharged off wall current in 1 1/2 hours. Weight of components separately not too bad to move around. I would recommend this product.