Small USB Power Banks - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 24, 2020, 02:08:14 am
content: I asked this on Twitter but no joy.Is there a quality brand power bank with USB-C PDandis less than 10,000mAh?There is this one graphene one:https://elecjet.com/products/apollo-traveller-graphene-usb-c-pd-power-bank-5000mahBut it's bigger than my 10,000mAh one and only 20g lighter.My goal is to sacrifice capacity for size and weight.

author: coppercone2
author_rank: Super Contributor
timestamp: June 24, 2020, 05:45:38 am
content: https://www.amazon.com/Attom-Tech-Portable-External-Emergency/dp/B07JZCBXMM/ref=asc_df_B07JZCBXMM/?tag=hyprod-20&linkCode=df0&hvadid=310039037276&hvpos=&hvnetw=g&hvrand=16117232550843878129&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1023089&hvtargid=pla-623914607169&psc=1but you need to give a specification. its too big in comparison to? (this is like dilberts boss. make it smaller then)

author: EEVblog
author_rank: Unknown
timestamp: June 25, 2020, 03:38:50 am
content: Quote from: coppercone2 on June 24, 2020, 05:45:38 amThat one does not support PD.Size, ok, my current 10,000mAh PD pack is 80x90x22mm

author: nuclearcat
author_rank: Unknown
timestamp: June 25, 2020, 07:39:47 am
content: My guess small banks cannot provide enough current to be useful for USB-PD. Still some exist.https://shop.aukey.com/products/8000mah-wireless-charging-power-bank-with-18w-pd-ouput-and-qc-3-0Not sure if it is trusted brandhttps://www.zagg.com/en_us/powerstation-2020(they have more athttps://www.zagg.com/en_us/universal-batteries)Not really brandedhttps://www.amazon.com/nrgGo-Powerbank-Portable-Charger-Battery/dp/B07VZPDLSL/ref=sr_1_15

author: EEVblog
author_rank: Unknown
timestamp: June 25, 2020, 09:01:17 am
content: Quote from: nuclearcat on June 25, 2020, 07:39:47 amThat's QC, not PD.QuoteNo smaller than 10,000mAh I have.QuoteNow were're talking, thanks.

author: nuclearcat
author_rank: Unknown
timestamp: June 25, 2020, 09:11:44 am
content: Quote from: EEVblog on June 25, 2020, 09:01:17 amQuote

author: Jeroen3
author_rank: Super Contributor
timestamp: June 25, 2020, 09:38:16 am
content: I suspect USB PD doesn't make much sense on small powerbanks. With 5V and 2 Amps you're already pulling 10 Watts. At 10 Ah with one cell you only have 30 usable Wh's.If you go up to USB PD profile 2 with 18 Watts or profile 3 with 35 Watts that's on a 5 Ah bank such a big power drain that I don't think there is much usable capacity left due to all the losses and internal resistance.

author: RenThraysk
author_rank: Regular Contributor
timestamp: June 25, 2020, 12:28:06 pm
content: Yeah (as posted on twitter), seem to have been a couple but they have gone the way of the dodo.https://xcentz.com/product/xcentz-5000mah-smallest-and-lightest-portable-charger/https://switchchargers.com/novoo-powercube-mini-5000-review/Guess they have fallen foul of the larger numbers the better mentality.Even thinking outside the box, to flashlights/headlamps (notably Acebeam UC35, and H30) that provide powerbank functionality with a type C, none support PD.

author: gorge441
author_rank: Contributor
timestamp: June 27, 2020, 10:31:23 pm
content: You may check this, HyperJuice USB-C + Lightning Battery (10000mAh)

author: RenThraysk
author_rank: Regular Contributor
timestamp: June 28, 2020, 01:28:48 am
content: Found one on Amazon UK & US. Claims to be a single 21700 Tesla cell with 18W PDhttps://www.amazon.co.uk/LinkOn-Charging-Delivery-Aluminum-Portable/dp/B0813MLG6K?th=1

author: EEVblog
author_rank: Unknown
timestamp: June 28, 2020, 03:31:07 am
content: Quote from: nuclearcat on June 25, 2020, 09:11:44 amAh, so it is. Can't buy it here though.

author: EEVblog
author_rank: Unknown
timestamp: June 28, 2020, 03:32:27 am
content: Quote from: RenThraysk on June 28, 2020, 01:28:48 amPerfect, but won't ship here.

author: RenThraysk
author_rank: Regular Contributor
timestamp: June 28, 2020, 11:04:49 am
content: Ah LinkOn seems to be based in Bulgaria.This looks like could be the OEMhttps://cnwaysoon.en.alibaba.com/search/product?SearchText=5000mAhProblem is their Aliexpress store is empty.

author: RenThraysk
author_rank: Regular Contributor
timestamp: August 28, 2024, 11:13:30 am
content: 4 years later...Wurkkos just released onehttps://www.wurkkos.com/products/%E3%80%90new-release%E3%80%91wurkkos-h1-charging-and-discharging-mini-portable-powerbank?VariantsId=11462Uses a replaceable 21700