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21st #USB #TypeC analysis is my first PowerDelivery 2.0 supply tested: the dodocool 30W with USB-PD (5/9/15/20). [Model DA66WUS]
tl;dr: Works great! Power Rules compliant! This is now my recommended Type-C charger. But (optional) 20 volt profile is a bit glitchy at times.

https://www.amazon.com/dp/B01GVDVEMM

[PDF of Compliance Checklist for dodocool DA66WUS]
https://drive.google.com/open?id=0B2OJRSgNnm4GTHptdm9wMzM4dGc

This is actually a pretty darn good charger! It is now my go-to recommendation, above even the Google 22.5W. This is half the cost, supplies USB-PD (so you can even charge your laptop), and additionally supports IR Drop Compensation!

"IR Drop compensation" is GREAT! It means the charger boosts voltage to output a flat 5.00V at load. This means USB-C noncompliant devices like the Nexus 6P which require >4.95v to charge, function perfectly fine.

The cord that is included with it isn't amazing -- it's a regular USB 2.0 C-C that has a rather high IR drop -- but considering the price it's hard to argue. Also, the fit and finish of the packaging/box is excellent.

The biggest complaint I have is that it doesn't properly advertise the 20v PDO (Power Delivery Object) in the USB-PD communications. It suffers from a "Split PDO" issue, which is described by +GTrusted in their article below. It seems to predominantly affect certain chipsets. (Like the one Anker/iVoler uses.)

http://gtrusted.com/review/51702

This means it advertises different voltages at different times, and may cause problems. (For example, my Twinkie couldn't trigger the 20v object, so I couldn't run any 20v tests.) I've also read reports it MAY have issues with Apple passthrough-charging hubs. I need to test this more.

However +Benson Leung  has confirmed it works perfectly fine on a Dell laptop/Chromebook Pixel at 20V. So just keep that in mind when buying it.

  #USBC  
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Vick Lee's profile photoZoran Skulic's profile photoLuke Hagenbach's profile photoNathan K.'s profile photo
30 comments
 
+Fida Mehran​​​​​​​​​​​​​​​​​ As long as you don't tell Google/Huawei/LG (they'll possibly claim you're voiding your warranty), yes. Magnuson-Moss means them doing that is technically illegal.

(Companies aren't allowed to say "use only our brand cables/chargers or we'll void your warranty". If something happens, they have to prove what you did directly caused it to do that.)
 
I'm glad to see a few more compliant cables and chargers being made available. I hope to see multi-port chargers reach maturity sometime soon.
 
Yeah, really hoping for something like this that adds a second USB-C 5V/3A connector for my phone sometime in the very near future.
 
Is the cord fine to use as well with the Nexus phones?
 
+Jesse Jaura Seems to be. IR drop makes it slightly worse than OEM. Note that in the manual, dodocool says "Use a dodocool cable, your device's original cable or a certified one". So even they are trying to play it safe.
 
+Nathan K.​ I have ordered dodocool charger for my nexus 6p as a spare. Can I use Anker's PowerLine USB-C to USB-C 2.0 6ft cable with this charger for my 6p. The cable description does say that it fully supports PD. Also the IR compensation by the charger will suffice the cable length I suppose. But I need an expert's advice 
 
+Tabish Khattak​​ That combination seems to work fine. Please remember the Dodocool comes with a cable, you might not need a third (Anker) one. I say this because of eWaste concerns. Also, I strongly recommend a 5a/100w USB3.1Gen2 USB-IF certified cable instead like the J5create JUCX01, Scosche CC3G23. It will be the only "spare" cord you will ever need.
 
Hi Sir, thanks for your review of our dodocool USB C charger

 
+Jovial Young​ Are you an engineer with Dodocool? There is a problem with it that I've been meaning to discuss with you. But your contact did not reply to my emails.
 
+Nathan K.​ What sort of problem. Is it serious. Because I have ordered this one for my nexus 6p. 
 
+Tabish Khattak​ It lacks legacy D+/D- signaling and therefore won't charge iPads, microB devices, etc.
 
Well +Nathan K.​ I am not that technical. Can you kindly tell me that is the charger safe for my nexus 6p?
Also can I charge other USB C Android phone like the HTC and future Samsung phones.
Also I don't own any iPad or Mac. So I don't care if it won't charge them. 
 
dodocool DA66WUS + HooToo hub (HT-UC001) + macbook 12" 2016 = power loop on/off

PD pass through doesn't work with the dodocool, assuming it's the PDO split issue, but when using my N6P charger it works fine. 
 
+Vick Lee Unfortunately without more information I can't say why this is happening. I'd need to debug the traffic to find out what it at fault.
 
Having read all this, including Nathan's spreadsheet related to charges and cables I still wold like to get confirmation that this dododcool 30w charger with it's delivered c-c cable is safe with my LG G5. Also is this cable safe as i didn't see that it has 56 ohm resistor.
 
+Zoran Skulic Plain-jane C-to-C cables should NOT have any resistor in them. I would not use the cable this comes with out of due diligence.
 
Thanks Nathan - so recommendation is to buy separate cable to use with this charger and again is this charger safe to use with lg g5?
 
+Zoran Skulic​​ please see +GTrusted​​​'s article below where they test just this: the Anker Powerport 5+ is the closest mechanically. http://gtrusted.com/search/Lg%20g5

Based on that data I'd retract my recommendation for this charger WITH THE LG G5 ONLY. It's clear LG did not do a proper job implementing USB-PD.
 
+Zoran Skulic based on this one review of the LG G5 with an Innergie charger, I can say with almost 100% certainty the LG has defective firmware and therefore I cannot honestly state which chargers it works with. Innergie is Delta Electronics, a world leader in Power Supplies. If there is a problem with the relationship, it's LIKELY not in the Innergie half! http://gtrusted.com/review/the-lg-g5-doesnt-charge-quickly-with-the-innergie-powergear-usb-c-45-using-usb-power-delivery
 
Interestingly enough is that besides my original charger, my older Belkin F7C008 Conserve Valet with max output at 5V has 2Amp max is charging pretty fast my LG g5. 
 
+Nathan K. I read your spreadsheet for recommended chargers and cables, and this Dodocool charger seems like your "bang for the buck" recommendation. What I haven't found is the information on why the cable is considered "iffy." What is iffy about it? Should it not be used to charge the Pixel XL? Thanks.
 
+Luke Hagenbach​ It suffers from "Split PDO" advertisements, but at 20v which is an optional level anyway. It also lacks legacy D+/D- encoding, meaning it won't charge microB or Lightning devices properly.
 
Got it. I thought that had to do with the charger itself, not the cable.
 
+Luke Hagenbach​​ It does have to do with the charger. It's like having a super fancy laptop, but then trying to email your grandma -- who only uses pen and paper. You need a printer as backup to communicate. This charger (and the Anker PP+5) lacks that.

You could use a remailing service (prints out your emails and transcribes them), but it would be expensive, and convoluted. This is the equivalent of using a "special cable". (Possible, but not recommended.)
 
Understood. My question was in regards to you stating that you thought the supplied c to c cable was "iffy."
 
+Luke Hagenbach Yes, the included cable is iffy. The one that came with mine seemed OK. But apparently other people weren't so lucky. "When in doubt, throw it out."
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