@variablepulserate I think this is the one, https://www.amazon.co.uk/ELECJET-PowerPie-20000mAh-Portable-Compatible/dp/B081S471NN/ref=sr11?crid=37KZOK6JWIYJZ&keywords=ELECJET+PowerPie%7CUSB+C+Power+Bank+45W&qid=1641181795&sprefix=elecjet+powerpie+usb+c+power+bank+45w+%2Caps%2C745&sr=8-1 - the entry in the Amazon Oz store is different but the device looks identical.
It contains two batteries of 3.7v @20,000 mAh but the actual output is 13,500 mAh.
Wouldn't you know it? Just after posting here about my proposed charge regime for the M1 MacBook Air it stopped charging. By a process of elimination, I deduced the supplied USB-C cable was crook & only connecting intermittently. Temporarily rectified by using a different cable, I have no shortage of those. I'm actually using the Sugru-repaired cable from the 2017 MacBook Pro.
I contacted Apple Support via the iPad app and eventually an appointment was made at the nearest Apple Store (18km away) for Wednesday afternoon, which was the first available time-slot. Under Covid rules, Apple stores are only open by appointment.
I'm planning on following the recommendation of an Australian YouTuber who suggests the best chance of the longest Apple laptop battery life is to keep the charge between 50 & 80% of the maximum.
Earlier in the week I bought a 13,500 mAh (output) battery capable of charging at 45W via PD/USB-C. My M1 MacBook Air's charger supplies 30W. The battery has a separate USB-A port rated at up to 18W although if used in conjunction with the 45W USB-C port the output drops from 18W to 10W. The USB-A port has a low-power mode for circuits requiring less than 200 mA. This will make it easy to maintain the M1 MacBook Air within the 58-80% range by freeing me from the need to charge via mains power.
Classic Aussie Xmas dessert. Pan-fried Xmas fruit cake warmed through & served with a splodge of butter.
I have been given a few simple tasks to ease the progress of the family gathering this Xmas. Bring nibbles, such as nuts & chocolates. And a precooked chicken. I'll be adding a bottle of Dubliner Irish whisky I picked up cheaply, my sister's semi-partner from New Zealand will be there - last Xmas when we first met, he had several spiritous liquors along with him. Plus the fixings for some decent proper non-instant coffee.
Two Xmas parties were held at Mum’s aged care place on Dec 18 & 19. Mum couldn’t make it, she had a horrid gastro attack that day & stayed in her room with my sister. A visitor to one of the parties has tested positive to Covid, so all residents are restricted to their rooms & no visitors are allowed until further notice.