Test/review of Baseus Car Charger QC PD 30W BS-C15C

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HKJ
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Test/review of Baseus Car Charger QC PD 30W BS-C15C

Baseus Car Charger QC PD 30W BS-C15C
DSC_7836
Official specifications:


  • 30W Output from USB-C Port, supporting PD3.0 PPS and QC4.0 protocols, backward compatible with Smasung AFC, Huawei SCP, OPPO quick charge, OnePlus Dash etc.
  • Multiple Safety protection: over-charge, over current, over voltage, over power, short circuit, over-discharge and temperature protection
  • When charging 2 devices at the same time, the output voltage will reduce to 5V on both ports, with total output max out at 5V5A.
  • Output USB-C (max 30W): 5V/3A, 9V3A, 12V2.5A, 15V2A (24V DC input), 20V1.5A(24V DC input)
  • Output USB-A (max 30W): 4.5V/5A, 5V/4.5A, 9V/3A, 12V/2.5A.

I got it from Amazon.com.au
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I got the charger in a cardboard box.
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The box included the charger, warranty chart and a manual.
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Measurements

  • Power consumption when idle is 4mA from 12V and 24V
  • PD output has 5V 2A, 9V 3A, 12V 2.5A, 15V 2A, 20V 1.5A, PPS:3-5V 3A, PPS:3-11V 3A
  • 12V is disabled when voltage drops below 10.9V and is enabled when voltage is above 11.4V
  • 15V is disabled when voltage drops below 13.3V and is enabled when voltage is above 14.8V
  • 20V is disabled when voltage drops below 19.2V and is enabled when voltage is above 20.7V
  • PD output is coded as Apple 2.4A, DCP, Samsung, QC2 5V
  • USB output is auto coding with Apple 2.4A, Samsung, DCP, QC3, Samsung-AFC, Huawei-FCP, Huawei-SCP
  • Minimum QC3 voltage is 3.7V
  • Generally only one output will work at a time, but when using a resistor based USB-C coding and a standard USB device (No QC) it is possible to use both outputs.
  • Both outputs can be turned on/off from the charger.
  • The charger has a blue led that is visible in the QC connector.
  • Weight: 19.2g
  • Length: 46mm
  • Largest diameter: 26mm

Load%20sweep%2011.6V%20QC5V
The overload protection is at around 3.2A at 5V output.
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THe same at 9V
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And at 12V
Load%20sweep%2024.0V%20QC12V
And the same with 24V input.
Load%20sweep%2011.6V%20PD5V
The PD output has the same limit.
Load%20sweep%2011.6V%20PD9V
Load%20sweep%2011.6V%20PD12V
Load%20sweep%2024.0V%20PD15V
Up to 15V
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But at 20V the output maximum current is limited to 2.2A (It is more than rated).
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The 5V output works down to 6V input
Voltage%20sweep%203.0A%20QC12V%20input%20current
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12V output need 13V input or it will be low.
Voltage%20sweep%202.0A%20PD5V%20input%20current
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The PD output also needs about 6V to deliver 5V output.
Voltage%20sweep%202.0A%20PD15V%20input%20current
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15V output will reset when voltage drops below the 20V limit, but it is possible to activate it again (My test equipment do not do that).
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The electronic is testing the output for a load when nothing is connected.
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I did this test at 3A on the QC output.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
Temp6865
M1: 44.9°C, HS1: 48.5°C
Temp6866
HS1: 61.2°C
10ohm
Noise at 0.5A output is 4mV rms and 65mVpp
5ohm
Noise at 1A output is 8mV rms and 149mVpp
2ohm
Noise at 2.5A output is 6mV rms and 125mVpp
10ohmQC9V
Noise at 0.9A output is 4mV rms and 80mVpp
10ohmQC12V
Noise at 1.2A output is 4mV rms and 84mVpp
Tear down
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I could screw the bottom off and then pull the circuit out.
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The electronic is hidden behind this shield.
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Here is the input fuse, the inductor and the dual output transistor to turn each output on separately.
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Some soldering and I could get the shield off.
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Below it is the switcher and dual charge controller (U1: Marked SW3510) and two switcher transistors (Q1 && Q2). Each output has it own sense resistor (R9 & R14: 2 × 0.005ohm).
Conclusion
This charger is mostly for one device at a time, not for two. It only has one converter, this means when using PD or QC it will often disable the opposite output. The automatic output switch did also turn on/off a couple of extra times.
The output power is fine for a single device and the charger supports just about everything, it also has low noise and good overload protection.
Notes
I got this charger from reader “Mostly Melbourne”
Read more about how I test USB power supplies/charger
Compare car chargers and other DC supplied chargers

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

JoeRodge
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I would buy this in the U.S. but can’t find it on Amazon. Anyone know of a legit seller?

joechina
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I bought a similar one with a higher product number from AliExpress, from the Baseus store:
BS-C16C1
US $4.92 36%OFF | Baseus Quick Charge 4.0 3.0 USB Car Charger For Xiaomi mi 9 Huawei P30 Pro QC4.0 QC3.0 QC 5A Fast PD Car Charging Phone Charger

https://aliexpress.com/item/32970589225.html

I like it

JoeRodge
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I just don’t know if it’s better than the one HKJ reviewed. I want the best car adapter I can get under 10-12 bucks. Newer isn’t always better ;(

joechina
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Well, mine was under$5 and I can’t say anything about the USB-C port because I don’t have one, but for that price I wouldn’t invest much time to find “the best solution ™”. Wink

JoeRodge
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joechina wrote:
Well, mine was under$5 and I can’t say anything about the USB-C port because I don’t have one, but for that price I wouldn’t invest much time to find “the best solution ™”. Wink

By best I’m not just talking about price. These can be dangerous if they aren’t made correctly. I, and others, trust HKJ’s opinion.

joechina
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Yes, of course.
Beside the tests of HKJ, there are a few brands I trust when they make cables and chargers. (Anker, Apple, Samsung, Xiaomi, Ugreen, Baseus)

This looks like the one HKJ tested
last character is for 2x USB or USB+USB-C and page says metall body. Which is better to get rid of heat. But HKJ looks like plastic. No, same body. The package says aluminium
https://aliexpress.com/item/32919769665.html

Hm, these chargers sell well
BS-C15Q
5000 Orders $7

BS-C16C1
37876 Orders $5

will34
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I have this same charger with a sightly different design. Works great but due to the lack of boost circuit PD doesn’t go 15 or 20V on 12V vehicles.

But for $6 there is hardly another decent choice for charging my iPhone with 18W PD. Got it from amazon with a vipon coupon.

JoeRodge
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I will probably buy the one you linked Joe. I will do some more basic tests with my load tester and meter.

Orsen95
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Hello, im new here and i have a maybe dumb question. But i don’t understand why is the current in 3.0A qc5v dropping. I’m asking because i need stable 3.0A and 5v for rpi4.

HKJ
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Orsen95 wrote:
Hello, im new here and i have a maybe dumb question. But i don’t understand why is the current in 3.0A qc5v dropping. I’m asking because i need stable 3.0A and 5v for rpi4.

I do a test where I slowly adjust the current from 0 until the charger cuts out or I reach 4A (This is above what USB connectors are rated for). With this charger the voltage is stable to well above 3A.

What you need is stable voltage and the PI is not that critical, because the first thing it does is reduce the voltage to 3.3V.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Orsen95
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Thank you for fast response, would you recommend me this Charger for that purpose?

HKJ
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Orsen95 wrote:
Thank you for fast response, would you recommend me this Charger for that purpose?

Yes.
Only problem I see that is that a car charger can easily loose connection in the plug, being small is probably a advantage for this charger.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/