Plug in balcony solar UK , just a Lidl question

[ericmark]

when the switch contacts are changing

That I suppose it the point, with the generators I put online, it was a physical switch, so needed to be synced only just before I throw the switch.

So with a UPS the supply has to be in sync with the mains, so at any time the connection can be made or broken.

I see where it is part inverter and part mains, there must be a possibility that there is some reverse flow, but I don't know how the battery packs work, with some battery packs the inverter is rated well over the rating of the battery, as one can up the output by adding more batteries.

So I have to admit not sure how exactly the battery packs work, I know the pack plugs into the mains, and it supplies an output to its built in sockets, and it is classed as an EPS supply, and EPS differs from UPS due to switching time. But exactly how it works I don't know.

They have however been sold in the UK for many years now, and do allow mains and solar to supply items, I looked at one, and came to the conclusion to use on mains and solar, I would need a time switch, to turn on mains 00:30 to 05:30 and then turn the mains off, so it would have discharged enough to use the solar during the day. But each model seems to vary, so not 100% sure if they can allow a back feed in some cases, even if that back feed is not intentional.