9V/10W USB A booster for wireless charging

[paulobrien]

While ordering for a friend recently I spotted that Taptes now sell a 9V/10W USB A booster for wireless charging, at the bargain price of £7.66 a pair!

I ordered them to use with my large pad as per the link and they seem to work great. Impressed!

Link: 15W Wireless Charger for Tesla Model 3 Built Before June 2020

 

[Adopado]

While ordering for a friend recently I spotted that Taptes now sell a 9V/10W USB A booster for wireless charging, at the bargain price of £7.66 a pair!

I ordered them to use with my large pad as per the link and they seem to work great. Impressed!

Link: 15W Wireless Charger for Tesla Model 3 Built Before June 2020

I hope they reached you within a reasonable time of ordering ... waiting 6 weeks ...supposedly stuck in UK customs ...

 

[paulobrien]

I've ordered a few times from them and always received quickly. Pot luck I guess!

 

[m3p_uk]

Anyone know how they work?
Thought the usb ports were limited to about 10 watts from 5v and 2amps? Just want to understand a bit better before potentially frying my usb ports

 

[Durzel]

Yeah I’m very sceptical. USB-A is not rated for more than 5V.

 

[pow216]

Boost converter then?

 

[Neilman]

If you read the blurb it only connects to the front USB data pins for data transfer.
The higher voltage and power output is drawn from the 12v accessory socket (cigar plug) under the armrest.

 

[m3p_uk]

If you read the blurb it only connects to the front USB data pins for data transfer.
The higher voltage and power output is drawn from the 12v accessory socket (cigar plug) under the armrest.

Wouldn't you be better off just plugging in the wireless charger into a decent 12v dual usb quick charge adaptor then?

 

[CMc1]

Wouldn't you be better off just plugging in the wireless charger into a decent 12v dual usb quick charge adaptor then?

Yeah.
Fitted mine this weekend https://www.amazon.co.uk/dp/B016F59W9S/ref=cm_sw_r_cp_api_i_IuRLFbN803H8S?_encoding=UTF8&psc=1 (right angled and small profile plug) and ran the wire down the side of the centre console. Removed the trim for access and had to make a small hole to feed the wire through to keep it neat.

 

[paulobrien]

If you read the blurb it only connects to the front USB data pins for data transfer.
The higher voltage and power output is drawn from the 12v accessory socket (cigar plug) under the armrest.

That's unless you use the USB A boosters...

 

[GRiLLA]

That's unless you use the USB A boosters...

So is it just something you plug into the existing USB-A sockets? I guess like many I'm struggling to understand how they may work on an electrical level, there's an amount of watts available in the socket, where does the boost come from?

 

[paulobrien]

Yeah I’m very sceptical. USB-A is not rated for more than 5V.

I'm not sure how it's different to hubs or splitters splitting one port to multiple though?

 

[Durzel]

I'm not sure how it's different to hubs or splitters splitting one port to multiple though?

If it's not a powered hub, which none of these ones (Jeda, Taptes, etc) are as far as I know, then it has 5V ± 5% / 0.9A to play with, across however many ports. This is usually enough for most devices anyway, but not always - it's why Taptes's original USB hub (actually a splitter) would crap out if you plugged too many things in.

I don't know how this booster works internally, if it connects to the rear 12V or elsewhere then it isn't as "plug and play" as just attaching it to the 2 front USB ports.

 

[Jason71]

If you want to reliably charge at 9-12v and even do 2 phones at once without over taxing the USB ports or using the accessory socket the alternative is to buy a cheap QC:3.0 power bank and use it as a buffer:
e.g.
https://www.amazon.co.uk/NinjaBatt-PowerPal-10000mAh-Portable-High-Capacity/dp/B07ZHCB5HK/ref=sr_1_96?crid=SEXPDEK0XG55&dchild=1&keywords=qc3+power+bank&qid=1603715101&sprefix=QC3+pow,aps,151&sr=8-96

ideally one that can charge and be charged simultaneously but this feature is rarely in the specs.
you can get them from about £10 dependant on capacity

 

[Tony Hoyle]

If you can persuade the socket to delver 2A then why step to 9v? Are there really wireless chargers that can take 9v at 1.1a but not 5v at 2a over the same socket? It just seems you're relying on very specific behaviour of both the tesla USB port and charger.

 

[paulobrien]

Are the car's ports definitely rated 5V/0.9A? That seems very low for a phone charger. TapTes suggest the wireless charger at normal speed pulls 5V/5W (i.e. 1A), but fast charging pulls 9V/10W (equivalent to 5V/2A), which seems a pretty standard rate. All I can say is it fast charges my phone with these new dongles plugged in just fine and didn't before!

 

[m3p_uk]

If you can persuade the socket to delver 2A then why step to 9v? Are there really wireless chargers that can take 9v at 1.1a but not 5v at 2a over the same socket? It just seems you're relying on very specific behaviour of both the tesla USB port and charger.

It's because quick charge uses 9V

 

[m3p_uk]

Are the car's ports definitely rated 5V/0.9A? That seems very low for a phone charger. TapTes suggest the wireless charger at normal speed pulls 5V/5W (i.e. 1A), but fast charging pulls 9V/10W (equivalent to 5V/2A), which seems a pretty standard rate. All I can say is it fast charges my phone with these new dongles plugged in just fine and didn't before!

Have you also plugged the dongles into the 12v outlet?
Any photos of how it all works please?

 

[Jeeves]

I’m curious to know why you need/want really fast/high-power charging in the car?

 

[CMc1]

I’m curious to know why you need/want really fast/high-power charging in the car?

Same reason to use Superchargers over a 7 kW AC. Short fast burst to get a high %, then on your way again.

Also using Waze and audio streaming can have a high power draw which a standard charger can’t cope with meaning the battery ultimately drains on long commute instead of “charging”.