690000 mAh Power Bank 4 USB Fast Charger - Page 1
Forum section: electronics / general

author: innkeeper
author_rank: Unknown
timestamp: October 28, 2018, 08:17:30 pm
content: I CALL BULLSHIT!there seems to be a plethora of these power banks on wish.com with claims if extremely high capacity.most popular capacity currently is 690,000 mah .. that's 690 amp hours for those playing at home.There are even some with higher claims...https://www.wish.com/search/power%20bank/product/5b31ea4cc6025e370a7c6e28?&source=search

author: MrMobodies
author_rank: Super Contributor
timestamp: October 29, 2018, 09:08:19 am
content: I don't like power banks that got big displays but no voltage displayed.

author: sstepane
author_rank: Regular Contributor
timestamp: October 29, 2018, 09:17:18 am
content: Just type in google - "bailong 18650" and you'll get more proof =)

author: kjr18
author_rank: Regular Contributor
timestamp: October 29, 2018, 09:29:27 am
content: Quote from: sstepane on October 29, 2018, 09:17:18 amWow, just searched it, and I found a local supplier that sells these for a bargain price: only 260 bucks for one!

author: amyk
author_rank: Super Contributor
timestamp: October 29, 2018, 12:04:06 pm
content: A real 690Ah power bank would take roughly two weeks to charge over a 2A USB connection...

author: CCitizenTO
author_rank: Contributor
timestamp: October 30, 2018, 03:27:30 pm
content: LOL.... It's a case of if it's too good to be true it probably is.At those ratings in Ah they'd have more energy capacity than the batteries in the pallet jacks and forklifts we have at work and I can tell you those batteries DO NOT fit into the palm of your hand.

author: palpurul
author_rank: Regular Contributor
timestamp: October 30, 2018, 03:40:42 pm
content: Finally a power bank for my electric car.

author: matseng
author_rank: Frequent Contributor
timestamp: October 30, 2018, 04:44:29 pm
content: Well, they don't specify the voltage, so it could be specced at 690 000 mAh at 10mV or so. Then it would be a reasonable amount of power in it. ;-)But in general I find it kinda annoying that the mAh-value of power banks issnt specified for the real output voltage of 5 volts but rather calculated at the 3.7 volts of the lipo. As a consumer I really don't care the batteries or technology inside the power bank, but just what I actually get and can use at the output.

author: innkeeper
author_rank: Unknown
timestamp: November 03, 2018, 01:11:52 am
content: but it says quick charge

author: kjr18
author_rank: Regular Contributor
timestamp: November 03, 2018, 09:37:52 am
content: Well it means that it charges quickly

author: JackJones
author_rank: Regular Contributor
timestamp: November 03, 2018, 09:55:24 am
content: Most people don't have any idea what a mAh is. All they see is bigger number = better. Those that know 690 Ah power bank isn't real aren't probably going to buy it. So it's not like there is a huge downside for the seller for lying like this. Some people might go through the effort of testing their real capacity and get their money back. But overall I doubt it really matters to the sellers.

author: Red Squirrel
author_rank: Super Contributor
timestamp: November 04, 2018, 06:53:30 pm
content: I'll get a couple and put them in series and run my house off them.And since it's a fast charger, I should be able to charge them up with a Canadian Tire solar panel on my roof in an hour or two. Good to go!

author: Gregg
author_rank: Super Contributor
timestamp: November 04, 2018, 09:50:18 pm
content: Some marketing expert thought that micro meant 1000 milli- and when engineering offered cheap 690 microamp hour they translated it to 690000 milliamp hour and put in for a bonus.No wonder it charges fast!

author: MrMobodies
author_rank: Super Contributor
timestamp: November 09, 2018, 06:32:31 pm
content: I know some of them are in series and they add all the amps up and I see that in the supermarkets.They state it in mAh and make the fonts big.It reminds me on Ebay some some time go when you get those sellers who say "with 6GHz processor bundle" when that they mean a 3GHz Duo core.I have actually got a power bank that imported two years ago and I'll post a thread and some pictures on it.It is dodgy so I'll post in this category but it has some features on it like a DC out and you can change voltages in 0.1 increments and change the batteries.It is not accurate and in some Russian boards they stated that issue with it.I couldn't find any other that could do that back then.