Which Powerbank ?

QrizB

https://forums.moneysavingexpert.com/discussion/comment/82197698#Comment_82197698

Yes, Jackery / Bluetti / Ecoflow / Anker all make decent large-capacity power banks.

Second-rank brands include Oupes and Pecron, plus a few others I can't immediately remember 🤔

However the power bank in the OP can't even agree on the brand name - is it PDBETS or PDBEST, the listing uses both! - so it's probably pot luck whether any of the other claims are accurate. (I note the description includes "item type: arm warmers" which shows the attention to detail paid by the seller.)

If you want a basic power bank just for charging a phone you probably won't go far wrong with this one:

https://www.amazon.co.uk/dp/B0FFM4BY6C

Branded Amazon, sold by Amazon, so you know who to complain to if it doesn't work.

JSmithy45AD

https://forums.moneysavingexpert.com/discussion/6689997/which-powerbank

20,000mAh? pfft, I've got a 158,000 mAh power bank…

(presuming my math is correct)

Exodi

https://forums.moneysavingexpert.com/discussion/comment/82197867#Comment_82197867

The devices you and QrizB have mentioned aren't generally referred to as power banks, they're usually called 'portable power stations'. If we broaden the definition like this, I guess anyone with an EV could count themselves as having a 100,000 - 300,000 mAh power bank.

@MouldyOldDough this is Ankers new budget one https://www.amazon.co.uk/dp/B0CZ9LH53B - my wife has this in pink and it has served us well (it can keep us both charged for a weekend away anywhere). It's a good price, though maybe you might be able to squeeze another 10% off during black friday. On the flip side, due to being new it only features USB C ports so check your devices or carry a USB C to USB A cable with you. I can't overstate how useful the built in cable is. Or the Amazon Basics one linked earlier features USB A ports if you don't want to buy new cables.

531063

OP, if you drive why not buy a jump starter pack with usb ports, I'm assuming you would be using it at home, so

therefore you would have a powerful back up for phones/tablets etc and if car wont start you could jump start it.

Draqo

What is the OP actually trying to achieve here?

@MouldyOldDough

Exodi

https://forums.moneysavingexpert.com/discussion/comment/82197924#Comment_82197924

They've said, they want to follow the governments recent advice:

https://beready.campaign.gov.uk/be-ready-for-emergencies/

The checklist advocates having a 'Charged power bank - To charge phones or compatible medical devices'.

The intention being to keep your phone charged so you can communicate. A portable power station mayyy be a tad overkill for this! I'd actually make the argument that OP's gargantuan 20,000mah tablet should probably be disregarded for these purposes, I can't see that people will be in the mood to play Candy Crush during an air raid.

MouldyOldDough

https://forums.moneysavingexpert.com/discussion/comment/82197333#Comment_82197333

You can download a utility called "Accubattery" that supposedly tells you the battery capacity of USB powerbanks as well as the actual phone battery - but I have no idea how accurate it is - it IS 100% accurate on the phone and tablet battery !

The tablet is a ruggedised one and is brilliant

https://amzn.eu/d/03SVjYYy

flaneurs_lobster

https://forums.moneysavingexpert.com/discussion/comment/82198003#Comment_82198003

That tablet is a monster.

Play Candy Crush and beat off looters with the same device.

Draqo

https://forums.moneysavingexpert.com/discussion/comment/82197986#Comment_82197986

Yes, I get the 3 day phone thing, but was hoping for a bit more actual OP input, given that most powerbanks smaller than 20k would allow them to keep a phone alive for 3 days, but the advice mentions medical devices and so on, so maybe hearing aids or various other monitors, the advice is the advice, but actual suggestions for the OP are contextual so was wanting more info.

QrizB

was hoping for a bit more actual OP input,

OP has previous threads on the subject. At one stage they were looking for a whole-house battery, and have also expressed concerns about losing their VoIP phone on a power cut.

At one stage they were interested that SSE are giving out free Ecoflow Delta power units to households with medical needs:

https://www.ssen.co.uk/power-cuts-emergencies/priority-services/home-battery-packs/

So the USB power banks that started this thread might or might not meet the entirety of the OP's goals.