Mike Scott  wrote:
> On the down side, I've heard it said that some won't supply power while
> they're charging themselves. I have no idea if that's true or not, but
> it has rather put me off the idea :-{ Can anyone confirm/refute this?

I bought one similar to this:
https://www.ebay.com/itm/4-in-1-DC-5V-9V-12V-5W-UPS-Raspberry-pi-18650-battery-
Charging-Step-up-Board/323270800137
I confess I haven't got around to testing it yet.

There are some more options described here:
https://github.com/rootzoll/raspiblitz/issues/263

Theo

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