yashsingh1/xdaforums huggingface dataset:
[HTC 10 Accessories] One Twelve:
No you don't.

Nobody in the HTC or G5 forums can show 80% in 30 minutes with qc3 certified chargers let alone battery packs. 60-65%, yes.

Maybe the QC3 spec allows for it but it seems HTC & LG have decided to slow things a bit. So in reality you will never get 80% in 30 minutes (!)..with stock.

one plus 3 does not use QC, it uses another proprietary method called 'dash' charge. 5V, 4A. It never goes above 5V so its a modified usb std unlike QC that jumps to 9V. The nexus also does not use QC and sticks to 5V. If a power bank came out that quick charges both of these you would not get the same loss that will be seen with QC power banks. For everything else coming of fthe mains QC is fine, you don't care if its less efficient but with battery packs you get bit.

Saw a graph that showed op3 doing 14-75% in half hour, sounds impressive until you normalise and its like 0-61% which is what the 10 or G5 on QC3 can do. They can even do it on QC2.

One of the confusing things is if a charger came out that said it was QC3, i don't know how to tell the differrence between and QC2. Because the only difference in thes tests between QC2 & 3 is heat. QC3 is like a more intelligent QC2. It doe snot charge faster than QC2.

---------- Post added at 10:05 PM ---------- Previous post was at 09:59 PM ----------

Give me a source for this.

Apple recommends charging to 50% and then topping off every six months. You do that you will have your shelf life.

You let them die, and you will require a conditioner to bring a lipo back to life. Your normal charger will not be able to do much. It might get a charge in but it wont hold for long, a gentle conditioner will do better.

So obviously they do self-discharge. i find it strange you would say otherwise.
[HTC 10 Accessories] TheMadcapl:
Well I thought qc 3.0 is about reducing the current (and heat) by increasing the voltage. In that case non qc banks gives up to 2 amps, its fast enough and efficient. But i still don't think that there would be that much heat loss.
[HTC 10 Accessories] ro_explorer:
Sure m8 .. here we go : www.batteryuniversity.com

Capacity loss vs. storage temperature and state of charge:

Storage Temperature | 40% charged | 100% charged
0°C | 2% after 1 year | 6% after 1 year
25°C | 4% after 1 year | 20% after 1 year
40°C | 15% after 1 year | 35% after 1 year
60°C | 25% after 1 year | 40% after 3 months
[HTC 10 Accessories] One Twelve:
QC3 works by regulating the voltage, its variable. If you look on your charger you will see a range of voltages for given amps. QC2 uses fixed voltages. If temperature goes above 32 degrees, qc2 will be slow or stop, qc3 will continue.
[HTC 10 Accessories] TheMadcapl:
Apparently qc 3 is more efficient than qc 2.

Source: https://www.qualcomm.com/news/snapd...e-30-next-generation-fast-charging-technology
[HTC 10 Accessories] One Twelve:
ok, so a distinction needs to be made here. Are we talking about free standing cells or ones that are sealed and hooked up to electronics that is powered down.

My results with the G4 and its replaceable battery. Brand new battery, about 3 months old from factory date printed. Charged to 50%, still at 50%. When i charged a battery to full and left it for about 5 months and then reinserted it, noticed it was at 97%. So it lost 3% in that time. Better than what the table above indicated which suggests closer to 90%.

However a sealed battery like on my sansa player needs to be topped up every 4-5 months. I can charge it to full and after 4 months its around 40%. Apple has said recharge after 6 months. So there is no relay that disengages the battery from the device and i highly doubt power banks have it either.

So there is some discharge occurring here. This has a direct bearing for power banks with sealed batteries and hooked up to electronics as well. Unless you use a power bank regularly, there is a good chance it will sit idle for months at a time only to be used in an emergency or on a trip. I would submit a fully charged power bank isn't going to behave like a free standing cell that has nothing connected to its terminals. Therefore it is going to discharge over time.

- Consider a brand new power bank. How long has it been sitting on the shelf. Up to 6 months from manufacture is good. Longer than that starts to get iffy. How to tell when it was manufactured ? the cells may have the date but you can't see them without dismantling the unit. if you get a power bank and its battery is dead that is not a good sign.

- as an owner, because it cannot hold charge indefinitely then how well can it indicate how much charge it has.

Something i would like in a power bank is an easy and obvious way to tell charge remaining. The options here are varied. Some will have digital displays which is great. Others have lights. Ten is good. Fewer lights like 4 which is less clear and finally just one light which is useless.

So many i see have 4 lights. The quirk is the meaning of those lights differs if its charging or discharging.

3 lights when charging means it has crossed 75%

3 lights when discharging means its somewhere between 50-75%. Is that closer to 50 or 75. Who's keeping track. Same when it drops to two lights and so on. How do people manage with this ?

Digital or ten led's is more clear. If you can find a bank that does what you want.
[HTC 10 Accessories] ro_explorer:
I agree with what you said but I think we are over thinking this.

We all understood (I hope) what's under the hood of a powerbank, QC or not. Now let's just use them :).

I'll order a 10000mAh QC 3.0 soon and I'll post my findings.

-= Sent from a parallel universe through a wormhole =-
[HTC 10 Accessories] One Twelve:
Before ordering people should understand what they're getting and not be disappointed after. When i read reviews i wonder whether the difference between 'full' charge & 'fully' charged is clear. Not interchangeable.

Getting just one full quick charge and little more out of 10,000 mah is ridiculous.

So, a non QC port on the bank, if QC isn't always required will be better. Then decide if you want one or two full charges. or as jauhein advocates, get a 20,000 mah instead of 10,000. Does not have to be all in one, 2 x 10,000 is the same.

So much hype about QC for phones. A phone has what ? a 3000mah battery. Quick charging a power bank is more important than quick charging the phone. QC does 5, 9 & 12V. Phones will accept 9V but when is 12V used. On a phone likely never..

12V is used for bigger batteries. If one is looking for power banks in excess of 10,000 mah then 12V charging is good to have on the input. If the current for the charger can deliver close to 2A, then you have close to 24W being input into the bank. Compare that with big banks which are older and don't use QC on clearance now and cheaper, they accept 5V, 2A, little over 10W. Will take twice as long or close to that to charge than one that can go up to 24W.

Was looking at chargers that can deliver this and many seem to top out at 12V, 1.5A, that is 18Watts. But it seems what is spec'd and what they can deliver is not always the same. The specs are conservative. Check this

review

.

20,000 mah spec'd to accept up to 24W paired with a charger, spec'd to deliver only 18W but is actually delivering close to 24W :D

Can the HTC charger do that ? if someone with a meter that accepts 2 digits can verify. Then no need for another charger.

Which one ?

Using QC3 to charge the phone will be interesting. No longer constrained to 9V but variable down to 6.5V. Going to use [MENTION=5581268]Pilz[/MENTION] excellent work from the test thread. Assumption will be a QC charger and a bank of the same number are one and the same.

Legend

Power - Green

Temperature in F - red

Battery % - grey

Current - Brown

Voltage - Blue

QC2 bank

x - 70% = close to 9V(!)

70 - 100% = 8.9V(!)

So pretty much all the way to 100% is spent hanging around the 9V level. THIS is what i mean.

Power around the 12W mark till 75% and then drops gradually to zero.

QC3 bank

x - 70% = 6V

70 - 100% = 6.2V

Big improvement. Power averaging 14W with spells above and below until the 75% then dropping to 12W at 80% before dropping to zero.

Your QC3,. 37 Wh battery is now a 6000 mah battery which is better than a QC2 battery at 4000 mah under ideal conditions :)

One and a half full charges possible. Not as good as 7400 mah non QC but a compromise of speed & efficiency.

Bottom line:

A non QC power bank if you don't mind waiting to charge itself and the phone. Must have a 2A+ output. Cheapest.

A QC charged bank that allows non QC 2 output for QC2 devices otherwise use 2 x 10,000 mah.

A QC3 bank that does input as well as output for QC3 devices.
[HTC 10 Accessories] Pilz:
Thanks, I have my QC 2.0 tests that I can post as well if you want to see how different phones charge (the other tests were conducted with my S7 Edge). An important thing to keep in mind is how efficient the power control chip (don't know the exact name of it, PCU maybe?) is because that will dictate how well voltages stay within the proper range. I'll post some examples when I update my S7 Edge charging OP linked in my signature hopefully today.
[HTC 10 Accessories] One Twelve:
I have a request for you. Wanted to know how much charging current and power drops when the screen is on vs off. Pick a low battery level somewhere under 50% as this is when incoming current is highest. Hook up your charger with a meter. Note charge current with screen off, then press the power on to turn the screen on momentarily, notice whether there is a current drop or not and if so by how much.

What i'm noticing with my usb meter is you get the full charge speed provided the screen is off. Once its on, the current coming in whatever it was when the screen was off gets halved, 0.5 - 0.7A, the voltage however stays constant on QC2. That is with QHD resolution devices. On older lower screen resolution devices the current flow stays around the one amp mark regardless.

Can you tell us how the stock, qc2 & qc3 charger behave here. Does qc3 offer any improvement here over qc2. Is the stock charger different.

Scenario is you're using sat nav with full screen brightness and gps, how well can whatever charger keep up with usage drain ?

Can the charger charge faster than consumption or will the phone throttle charging current to keep temperatures down as the screen is on.

In which case you can never charge faster than you consume. Be it with a car charger or a battery pack in such a scenario.
[HTC 10 Accessories] One Twelve:
here are some 'real world' observations about the ravpower 20100, QC2 power bank. The sort of useful info you don't find in amazon reviews.

None of these guys 'received this unit for free or at a discount in exchange for an honest and unbiased review'.

Ravpower have since upgraded their power bank to QC3 but in general the figures should hold. No faulty equipment here, just misplaced expectations.

Which is what i expect, 2 charges and change out of 20,000 mah. The interesting bit is the 6P charges at 5V not 9V so you would think there would be more efficiency here. Nope, because fast charge is not efficient period. You want fast then accept you're getting less. Otherwise go slow. But speed is addictive, everybody wants the fastest.

Next how long it would take, provided you have the right charger

Time quoted to full on the site is little over 4.5 hours. Maybe qc3 is a little faster. But with QC2. This is as good as it gets.

Quick charge the powerbank :good:

QC3 :good:

Next, how ravpower themselves calculate how much power a 20,1000mah battery ought to deliver.

Not only do you have to account for the step up to 5V because nothing charges under you also have to consider the efficiency of that stepup.

Ravpower reckon 3 full charges, people could not get that, it was some where between 2 and three.

Finally, as to the practicality of lugging around a 20,000 mah day to day....

Easier to carry around a charger, otherwise use a smaller quick charge bank. Just realise you're getting little over one 'quick' charge out of 10,000mah.
[HTC 10 Accessories] subhani:
Awesome summary.
[HTC 10 Accessories] rfgamaral:
Is there any power bank similar in size to Anker Mini but with Qualcomm QC 3.0?
[HTC 10 Accessories] Andyw2100:
I wrote a pretty lengthy review of the Choetech Quick Charge 3.0 Power Bank, which I like a lot, here:

https://www.amazon.com/gp/review/RGKUXW9CD3SGC

I think it may be somewhat larger than the Anker Mini, though.
[HTC 10 Accessories] rfgamaral:
Thanks but that's way too big for me to carry with me in a pocket all the time. I'm really looking for something much smaller...
[HTC 10 Accessories] One Twelve:
iwalk extreme trio 6000mah

if you do the math you have about 3,300mah usable. Not QC, but can output 2A with the screen off.

Have seen the 10,000mah version do it. Expect the 6000mah can do it also.

Pricey and it came out in mid 2014.

otherwise wait until more models come out.
[HTC 10 Accessories] rfgamaral:
I already have one similar to that, I'm really looking for a QC one now... :(
[HTC 10 Accessories] JrWriter87:
Pretty good. This is the one I have

http://www.androidheadlines.com/201...core-20000-quick-charge-3-0-battery-pack.html
[HTC 10 Accessories] subhani:
https://www.amazon.co.uk/gp/aw/d/B01GWH6CHO/ref=ya_aw_od_pi?ie=UTF8&psc=1

I have this 12000 Tronsmart now. Being sold at a fraction of the price. It is definitely MUCH more manageable than the Ravpower brick. It is lighter and smaller.

Like others here. In the ideal world, this needs to be EVEN smaller just so as to not feel it in the pocket at all. To act as an emergency supply only. This is still a huge improvement over the Rav. I can only compare the size and weight to a Nokia 3210 in your pocket. A smidgen bigger. It's the same height as the 6P, but it is a 1/3rd narrower and twice thicker. Now because it is shaped like a tall choc ice, the impact is an impression that it is much lighter and more compact. I quite like this.

Now in terms of use... I've been only using it at home and I must say it seems to be holding it's charge longer than the Ravpower. I've already squeezed two charges out of the Tron and it seems to indicate that it is still above the half way mark. That's impressive when compared to the Rav. I charge through the type c to type c cable only. I understand the Tron itself can be charged using the type c port too.

I'm nowhere near as technical as you guys so I have no real data and numbers but please give me tips so I can give better feedback. All I can say is that charging time when screen is off is very admirable. But not mind blowing.

Sent from my Gold Nexus 6P
[HTC 10 Accessories] subhani:
Sent from my Gold Nexus 6P
[HTC 10 Accessories] subhani:
So I've managed to get 4 charges out of the tronsmart 12000. Which is surprising, considering the capacity of the Tron compared to the RavPower. The RavPower used to give me the same but from a 20000mah capacity.

I admit my testing isn't scientific and use case scenarios differ, but I know I didn't TRY to skew the results or my usage styles.

I strongly recommend this Tronsmart. In my opinion, it is the defacto king of portable chargers for Type C devices.

Sent from my Gold Nexus 6P
[HTC 10 Accessories] rkial:
Had a couple of questions..

I have an Aukey QC 2.0 compliant powerbank - https://www.amazon.com/10000mAh-Portable-Charger-Qualcomm-Aluminum/dp/B00UBDI7EC .

It came with a micro usb cable..

A) Is it safe to use with a QC 3.0 device like the 10?

B) Will getting a compliant USB 3- USB C cable (from Anker?) be safe to use with it?
[HTC 10 Accessories] Riff76:
Just got the anker 10000 in prime day. Micro usb so waiting for next paycheck to get usb c adapter. It is quick charge 3.0 tho
[HTC 10 Accessories] PG101:
I am eyeing one of these two

https://www.amazon.com/gp/product/B019IFIJW8/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A2KUZVNQ9LP7N9

or

https://www.amazon.com/Anker-PowerCore-Ultra-High-Capacity-External-VoltageBoost/dp/B014ZO46LK

Exhausted my self reading.. I am inclined towards the RavPower.. as it supports both QC2 and QC3.. and that it has both USB C and MicroUsb.

Any thoughts?
[HTC 10 Accessories] hynar:
have this one, and it works pretty good.

i really dont like "BRICK size" - this one is not too big size, but not too small capaytiy at all :)
[HTC 10 Accessories] mrro82:
I have this one. Works great.
[HTC 10 Accessories] _-..zKiLLA..-_:
I just got the anker powercore 10000 (w/ qc 3.0) and I'm loving it. I'm only getting about 2 charges but its very hot where I am and every time I've charged it so far I have been playing pokemon go at the same time. It may be possible to get closer to 3. (3000mah phone - 10000mah battery should theoretically give 3 charges). I haven't seen to many QC 3.0 certified power banks
[HTC 10 Accessories] PG101:
I'm more inclined towards the ravopower one.. it's Qualcomm QC3 certified and has both USB C and the Micro USB port.. supports both QC3 and 2...

________________

RC-RT Liaison / Senior Moderator
[HTC 10 Accessories] One Twelve:
2 charges and a bit sounds about right. The reason it's as much is when your screen is on, your charge rates drops to a third of what it can do with the screen off, 4-6W, nice gentle charge.

Charge with the screen off and the power can cross 12W on Qc3, it will be less than 2 full charges around 5550 mah usable. You can manage this however. Start charging when battery drops no lower than 60%. The power draw around that point is 12W and starts dropping when battery gets to 80%.

Start charging when battery is lower say 20-30% and power draw can reach 16W, will kill your bank much faster.

---------- Post added at 01:07 AM ---------- Previous post was at 01:04 AM ----------

Very interesting, have not seen a mini that can output qc3 as yet.

---------- Post added at 01:45 AM ---------- Previous post was at 01:07 AM ----------

Pilz reviewed it and we've discovered some surprising things about it.

http://xdaforums.com/nexus-6p/accessories/review-tronsmart-presto-12000mah-usb-c-t3407636

If you want smaller then accept a slower charge. You can then get away with less mah. Faster the charge, more the loss so you need a bigger pack to be meaningful.

When you say two charges, what level was the 6p at when you started the charge?

Correct, that model only accepts being charged from the c port. Looking at the specs would suggest you have to use a c port charger as well along with the c to c cable. But guess what, you can also use an a to c cable and a qc3 charger and it will qc3 itself as well.

The difficulty with getting real numbers out of the 6p is there are no usb c power meters out yet. We just have the theoretical figures or whatever the ampere app can cough up which isn't very reliable.

Post at what battery level you start charging and when you stop charging. We will try and guesstimate from there. No idea how the 6p charge rate works is it a constant 5V3A all the way like QC 2 is or does it fluctuate like Qc3. QC devices drop to a third of charging power if the screen is on, maybe the 6p is similar.

My guess for the 3450 mah 6p battery and your 12k tron bank is anywhere from just under 2 to 2.5 full charges.
[HTC 10 Accessories] brau__lio:
What do you think about latest Xiaomi power banks? There are 20k and 10k mAh enhanced versions with QC 2.0.
[HTC 10 Accessories] jauhien:
Basically 20k means charging hTc 10 two and half times, and 10k would charge it thru QC2 technology one full and half times..

Sent from quite brutal hTc 10 ..
[HTC 10 Accessories] Jwtiyar:
this is not usb type c , how you can use it with 10 ?
[HTC 10 Accessories] jauhien:
Can be used with hTc 10 with aid of a cable....

P.S. Alternatively with two dollar interface like this: https://m.aliexpress.com/item/32678...32678546533&shortkey=iA7Vnqa6&addresstype=600

Sent from quite brutal hTc 10 ..
[HTC 10 Accessories] allhill:
any one using aukey 30k powerbank with QC 3.0?

https://www.amazon.com/30000mAh-Portable-Charger-Lightning-Outputs/dp/B01HRAG2KM

really need this for playing Ingress on next Anomaly
[HTC 10 Accessories] DeeZZ_NuuZZ:
you will connect the phone with the usb typ c cable which comes with phone to the usb port in the power bank. the micro usb port is for charging up the power bank, that's how you use it with the 10 ;)
[HTC 10 Accessories] ryanjsoo:
So no one's tried the Blitzwolf P3 yet? Looks promising, 10K mah capacity, slightly larger dimensions than the Xiaomi 10k charger but has two USB outputs, one of which supports QC3.0. I bought one a few weeks ago and am just waiting for it to arrive, hopefully it's a new batch model. Best part is that it only costs $24 shipped, I'll write some more comments when I receive it.
[HTC 10 Accessories] jauhien:
You won't change your hTc 10 with this hickey twice..

Sent from quite brutal hTc 10 ..
[HTC 10 Accessories] ryanjsoo:
Not sure the conversion efficiency will be that low, but perhaps not as high as that of Xiaomi packs, I can do some measurements and calculations in my testing.
[HTC 10 Accessories] cheep5k8:
I just got the RAVPower 20000mAh QC 3.0 pack and it's been nothing but good.
[HTC 10 Accessories] ryanjsoo:
Just found this battery on sale at the moment, really impressive specs for the price with two USB outputs, one QC3.0 and one 2.4A and also a USB C output/input. Also charges via QC which is uncommon at this price point:

https://www.aliexpress.com/store/pr...Dual-Output-with-Type/116590_32726843684.html
[HTC 10 Accessories] romanch:
This option is very good.

https://www.amazon.com/Xiaomi-20000...630226&sr=8-1&keywords=mi+power+bank+20000mah
[HTC 10 Accessories] Magic Stick:
Hey, I was going to get one of those, but I've read qc 3.0 is only supported over usb-a? Is that true? If so, how long does it take for you to charge your phone 0-100%?
[HTC 10 Accessories] B. Wong:
I'd like to buy the Tronsmart Presto 10400mAh but the first line on the Amazon page say that it isn't compatible with the HTC 10. Anyone have any insight as to why this is?

https://www.amazon.com/Tronsmart-10...ds=Tronsmart+Presto+10400mAh+Portable+Charger
[HTC 10 Accessories] jauhien:
Such capacity power bank, whilst charging thru QC 3.0 algorithm and technology, will be able to change your hTc 10 - just 1.5 times.. :(

You better look for a 20 Ah capacity one.. that one will fully charge your hTc 10 at least - 2.5 times thru QC 3,0 tech..

Thank you!

Sent from quite brutal hTc 10 ..
[HTC 10 Accessories] Haldi4803:
The official Value is 3 Times for LG G5.

According to Amazon Reviews:

"Capacity listed 45.12 WH

Output 39.31 WH which makes it my largest and most efficient external battery."

Which seems pretty nice.
[HTC 10 Accessories] allhill:
I decided to buy Aukey 20000mAh QC3.0, the amp then my 10 aroud 30% is same like the wall charger, but charging 30min from 0% is not reach 50%

Anyways this is a decent powerbank. I'm done with xiaomi powerbank.
[HTC 10 Accessories] subhani:
Sorry for such a late reply but I never timed it seriously. My experience is that it was the expected 2 hours. I also never use the USB A port.
[HTC 10 Accessories] Rolo42:
I just got the Ravpower. It's nice. It Quick Charges the 20AH battery, has one QC3 port, 1 USB-C (in/out), and one 2.4A port.

It comes with a micro cable that, when used with a micro-to-USB-C adaptor, does Quick Charge the phone (having a hard time finding cables that don't interfere with Quick Charging the phone even though QC is supposed to work irrespective of cable and connector, per Qualcomm's site).

It also comes with a nice fitted pouch to keep it protected (wife's purse might as well be some sort of blender-sandblaster-device).