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FAST Wireless Charging/Wireless Charger Hardwire Voltage Crap

Discussion in '3rd Gen Tundras (2014-2021)' started by SNO BUS, Mar 4, 2018.

  1. Mar 4, 2018 at 1:21 PM
    #1
    SNO BUS

    SNO BUS [OP] Professional Moneywaster

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    Update, please read: All the crap in post #1 is wrong. This only applies for Samsung branded wireless chargers, and I've just learned, thanks to post #2, that other wireless chargers are not like this. However, if you're concerned about there not being enough voltage when the wireless charger is on at the same time as the 12v in the back is powering something, post #3 and #4 might help you!

    Ok so: @trdlife and @smooosh did great write-ups on how to install wireless charging in the center console lid on the Tundra as well as how to hardwire it to the rear 12v socket, but I have a new question. There's a difference between regular wireless charging and fast wireless charging, and if the right equipment isn't used, fast wireless chargers will function like regular wireless chargers, and not really charge any faster. The way fast wireless chargers achieve a "fast charge" is by a special chip that is inside of the power source that it's connected to. Here's an example of a power brick with a Qualcomm QuickCharge 3.0 chip in it:
    [​IMG]
    So when you hardwire it directly to the rear 12v socket, it's just getting a regular charge, as there is no fast charging technology anywhere. I've had both kinds of wireless chargers, both made by Samsung, and with a regular wireless charger, my phone took about 4 hours to get from 0 - 100% which is about 0.42% per minute. With a fast charger, it took around 1.5 hours to go from 0-100, which is about 1.1% per minute. In my opinion, this is a huge difference and I want to be able to use fast wireless charging technology in my Tundra. Here's how I think this can be done:
    1. Install a new 12v outlet somewhere inside the center console out of sight (like where @smooosh put his splice stuff for his install). The wiring would go from the battery, to an inline fuse, through the firewall, under the dash and center console to the 12v port) *It would probably also be wired to the ignition so it isn't on all the time...
    2. Buy a 12v USB charger with fast charging equipment in it such as this one from Samsung and plug it into the 12v socket.
    3. Run the USB cable from the fast charger up inside of the console box lid and to your fast wireless charger. (I'm sure there's a better fast wireless charger out there somewhere that covers more of that area but I'll look into that later.)
    I know this is really just me being picky, but I think it's a good idea for a delightful fast wireless charging experience in the Tundra, and I wanted to know what the rest of you all think of it. Open to constructive criticism? :D
     
    Last edited: Mar 4, 2018
  2. Mar 4, 2018 at 5:57 PM
    #2
    smooosh

    smooosh This place costs me too much $

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    Can you link me where your getting your info from?

    From what I see and know as long as the wireless charger you buy has fast charging built in that is where your chip that makes fast charging work comes into play. It has extra logic in the chip to be able to lower the charging power if your phone tells it, it’s getting to hot or close to being complete. All wireless chargers I have bought that are fast charging only came with a usb cable. You had to supply the power source so if you have to have a special power source how can it be advertised as fast charging?

    Looking at the Samsung fast charging 12v port you linked from what I see that is for wired fast charging compatible Samsung phones with the same consept as wireless fast charging. Getting to hot. Lower the charge rate. Close to done, lower the charge rate.

    I could be wrong so if you have some info I would like to see it.
     
  3. Mar 4, 2018 at 6:24 PM
    #3
    SNO BUS

    SNO BUS [OP] Professional Moneywaster

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    Here's info I have on Quick Charge 3.0
    Tech specs and compatible adapters

    Quick Charge achieves fast charging by upping the charging voltage, which in turn boosts the wattage. Qualcomm hasn’t published the specs on Quick Charge 4 and 4+, the newest revision, but Quick Charge 3.0’s voltage range is common knowledge. It’s 3.6V minimum and 20V maximum, which Quick Charge 3.0 increments or decrements using Intelligent Negotiation for Optimum Voltage (INOV) to identify the most efficient voltage at any giving point during charging. At its peak voltage, Quick Charge 3.0 can deliver 18W of power.

    Quick Charge 4 and newer have the added bonus of compatibility with USB-PD chargers, but Quick Charge 3.0 and older only work with Quick Charge-certified accessories. Still, Quick Charge’s ubiquity means there are plenty to choose from. Qualcomm’s website has a partial list of the most popular options.

    And info on Samsung fast charging
    Tech specs and compatible adapters

    Samsung’s Adaptive Fast Charging has a theoretical peak of 9V/2A (18W), but tends to be a bit more conservative in practice. Tapping into Adaptive Fast Charging’s speeds requires buying a certified charger, but most Samsung devices support Quick Charge-compatible accessories.

    I may or may not have just answered my own question. Damn. I've only ever owned Samsung wireless chargers, and it looks like needing a fast charging power brick is only a Samsung-specific thing, and you're right about other brands of wireless charging pads having the fast charging chip built in so you just need any ordinary power source...

    However, as discussed with you here, if the 12v port in the back and wireless charger are being used at the same time we could be short on power. In my use, it is very possible that the 12v port in the back will be in use simultaneously with my wireless charger, so should I add another 12v port for this anyway? I could make it simpler, by just wiring a Blue Sea USB port unit from the battery to the center console box instead of a 12v port and a fast charging 12v usb charger, since we know as long as I have a fast wireless charging pad with the chip in it, I won't need that setup.

    Now that I think of it, I have a power bank with Qualcomm QC3.0 and the battery would act as the power from the truck, and the QC3.0 chip in the powerbank would act as the QC3.0 chip in the wireless charger. No need for Samsung's proprietary crap!
     
  4. Mar 4, 2018 at 6:34 PM
    #4
    smooosh

    smooosh This place costs me too much $

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    Yes running a new wire would be best if you use the back port all the time. I don’t so rather then running new wires this was easier

    If you are not going to run the wire at to the ignition and they are always going to hot I would put you phone charger on the factory wires and the back port on the always on wires. If you put the charger on the always hot it will always be pulling current, but the port would only pull current if you have something plugged into it.
     
    SNO BUS [OP] likes this.
  5. May 22, 2018 at 8:41 AM
    #5
    kstateskier

    kstateskier New Member

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    Not sure if this is the right place to ask this but...

    I recently purchased this wireless charger (https://www.amazon.com/gp/product/B079KZ49PJ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1) with the intent of plugging its USB plug into my single usb port in the console near my change jar. But it seems as if it only operates for a short time and then shuts off. It appears as if it doesn't have the power to operate for long.

    I doubt its the charger because I can plug it into the wall in my kitchen and operates as expected.

    Should I be using my 12V port instead? What is it about the oem usb port in the dash?
     
  6. Jul 14, 2019 at 4:12 PM
    #6
    Therin7

    Therin7 New Member

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    Came across this threads researching DIY Charger mods... I know its a few months late, but I have that same charger and have been throwing it in the truck, plugged into the usb in the dash. It never shuts off, just charges super slow thru the usb. Good performance for $14 bucks otherwise!
     
  7. Jul 14, 2019 at 4:13 PM
    #7
    Therin7

    Therin7 New Member

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