Powerbanks

jamesd

The 10kWh powerbanks are a lot smaller and there are various handy examples of those around. I have quite a nice one that has USB C in and out as well as a dual micro-USB and USB-C cable with four lights to indicate charge status but unfortunately it's no longer available. The more flat versions of this size can be about the same size as some phones, which can make it convenient to use the phone while charging.

There are also some chargers that can use the 18650 size batteries (18mm diameter, 65mm length) in the charger to provide power for charging phones. The potential advantage of these is that you can carry as many charged batteries as you like. A couple of examples:

XTAR PB2S 23.29 2x18650 cells supported, you need to supply them, can choose whatever battery capacity you like or carry more batteries as convenient. Digital power level display and both USB-A and USB-C output support. Says it can charge low power devices - some chargers can't charge things that draw very little power when charging because they turn off assuming there's not really anything there, which might be what's happening with a watch. Also supports the larger, higher capacity 21700 batteries (21mm diameter, 70mm length). Night not support power bank with only one battery in place. Batteries not included.

Xpizo DIY Power Bank 18650 Battery Charger 13.59 Up to four 18650 batteries, can run with only one. Lights indicate approximate charge state, has a torch feature. Batteries not included. Four is about 10,000mAh but bulkier than the flat cell models that don't use 18650s.

Sharainn 20000mAh 8x1650 batteries 10.19. LED for capacity percentage number. Batteries not included.

You pay a bit in space and cost of the 18650s but get more flexibility in how much power you're carrying around.

The 18650 batteries are commonly used in inexpensive but bright torches and e-cigarettes so the dual use aspect may be handy if you find your torch running out of power, could just move a battery over to it.

JustAnotherSaver

getmore4less said:

We have small lipstick size for the small pocket/bag situations where a top could be handy.

The larger ones are for big  jacket pocket/backpack.

What are you running that is taking all the charge out of your phones in a day?

GPS will be a fair old drain.

The battery isn't great on my S10. If i don't particularly use it that much then by the time i've finished work after 10-11 hours it'll be on say 30%. Just a bit of use on my breaks.

getmore4less

JustAnotherSaver said:

getmore4less said:

We have small lipstick size for the small pocket/bag situations where a top could be handy.

The larger ones are for big  jacket pocket/backpack.

What are you running that is taking all the charge out of your phones in a day?

GPS will be a fair old drain.

The battery isn't great on my S10. If i don't particularly use it that much then by the time i've finished work after 10-11 hours it'll be on say 30%. Just a bit of use on my breaks.

Have a look in your battery statistics to see if there is anything you don't need something must be draining if using that much battery with occasional use.

Just checked mine 16hr since last full charge, down to 70%.

65% was screen that was a good amount of browser activity.
Had turned off auto brightness back on now that should help.

Movaraks

I have been using Anker 20,000 mAh for a very long time, the claimed 20,000 mAh is not there, but 15,000 is for sure.

AlexRichman

HI) is it possible to charge drones from the powerbank?