AliExpress

12v car outlet to 5v USB adapter w/ voltage and current monitoring displays (display voltage drop on crank!) $4 shipped

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Jan 4th, 2021 7:22 pm

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Dec 2nd, 2020 3:37 pm

the2ndme [OP]: Banned; Oct 10, 2020; 1037 posts; 617 upvotes

Dec 2nd, 2020 3:37 pm

12v car outlet to 5v USB adapter w/ voltage and current monitoring displays (display voltage drop on crank!) $4 shipped

Deal Link:: https://www.aliexpress.com/item/4000003 ... 76%232711%
Price:: $4.00
Retailer:: AliExpress

Not documented but its monitoring is fast enough to capture voltage drop on crank. It uses ~20 mA when plugged in (leds/monitoring). Note that car battery voltage readings from the interior car outlet are ~0.2v lower than at the battery.

37 replies

Dec 2nd, 2020 3:55 pm

mikka2017: Deal Expert; Jan 12, 2017; 18619 posts; 5437 upvotes; Scarberia

Dec 2nd, 2020 3:55 pm

this is good to monitor ur starter? i just had mine worked on! car was DOA!

*SIG: Ryzen R5 2600 cpu w/ ASrock B450M OCd to [email protected] stock cooler 16gb ram win10 pro w/radeon rx460 rogers Gigabit<< xb1 gamertag: mikka2017 >>

Dec 2nd, 2020 4:03 pm

the2ndme [OP]: Banned; Oct 10, 2020; 1037 posts; 617 upvotes

Dec 2nd, 2020 4:03 pm

mikka2017 wrote: ↑ this is good to monitor ur starter? i just had mine worked on! car was DOA!

Just the voltages from the battery. It can't help you there.

I think based on what you described in another thread/post, it's likely you have a bad starter.

+2

Dec 2nd, 2020 4:11 pm

belmichel: Newbie; Aug 16, 2007; 83 posts; 93 upvotes; Montreal

Dec 2nd, 2020 4:11 pm

Ordered 1. Thanks OP. Weird as it switches between the .ca to the .com site. Also, buying 2 adds shipping fees, even when you revert to 1... Also realized that Aliexpress now re-accepts Paypal (unless i'm really late with the news...)

Last edited by belmichel on Dec 2nd, 2020 4:12 pm, edited 1 time in total.

😎

Dec 2nd, 2020 4:12 pm

Chocolinx: Deal Addict; Nov 22, 2005; 2038 posts; 497 upvotes

Dec 2nd, 2020 4:12 pm

Picked up one and don't even really need it but can't have enough tools for the car lol Thanks OP

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Dec 2nd, 2020 4:23 pm

cololcool: Newbie; Jun 30, 2005; 76 posts; 159 upvotes

Dec 2nd, 2020 4:23 pm

It took me awhile to realize this is a car charger

+1

Dec 2nd, 2020 4:48 pm

RudeDoggy: Sr. Member; Aug 7, 2001; 673 posts; 111 upvotes

Dec 2nd, 2020 4:48 pm

belmichel wrote: ↑Ordered 1. Thanks OP. Weird as it switches between the .ca to the .com site. Also, buying 2 adds shipping fees, even when you revert to 1... Also realized that Aliexpress now re-accepts Paypal (unless i'm really late with the news...)

Careful when using PayPal. I tried it with a credit card that was linked to my PayPal account and I was charged a cash advance fee (and corresponding interest). I got the charges reversed as a one time courtesy. I guess if you have a balance in your account you should be ok but use caution if you plan to use a credit card that's linked to your PayPal account.

+1

Dec 2nd, 2020 4:50 pm

jay-em: Deal Addict; Nov 1, 2009; 1939 posts; 1086 upvotes

Dec 2nd, 2020 4:50 pm

RudeDoggy wrote: ↑ Careful when using PayPal. I tried it with a credit card that was linked to my PayPal account and I was charged a cash advance fee (and corresponding interest). I got the charges reversed as a one time courtesy. I guess if you have a balance in your account you should be ok but use caution if you plan to use a credit card that's linked to your PayPal account.

Curious which CC company were you with.

I just purchased some items & paid with PayPal connected to my Stack MC.
I didn't incurred any additional fee.

Dec 2nd, 2020 5:01 pm

recordman: Deal Addict; Jan 19, 2005; 4734 posts; 1845 upvotes; Vancity

Dec 2nd, 2020 5:01 pm

I already have a QC3.0 car charger. Don't really need this adapter, but once I saw that shiny LED display, I knew I have to have it. Thanks OP.

signature closed for renovation

+2

Dec 2nd, 2020 5:55 pm

RudeDoggy: Sr. Member; Aug 7, 2001; 673 posts; 111 upvotes

Dec 2nd, 2020 5:55 pm

jay-em wrote: ↑ Curious which CC company were you with.

I just purchased some items & paid with PayPal connected to my Stack MC.
I didn't incurred any additional fee.

Rogers World Elite MasterCard.

+2

Dec 2nd, 2020 7:03 pm

ykhehra1: Deal Addict; Aug 11, 2008; 1189 posts; 359 upvotes

Dec 2nd, 2020 7:03 pm

RudeDoggy wrote: ↑ Rogers World Elite MasterCard.

Do you also have your bank account attached as backup?

Dec 2nd, 2020 7:29 pm

the2ndme [OP]: Banned; Oct 10, 2020; 1037 posts; 617 upvotes

Dec 2nd, 2020 7:29 pm

Remember the readings from the interior power outlet are ~0.2v lower than from the battery posts. Couple of useful tables ...

+1

Dec 2nd, 2020 11:51 pm

RudeDoggy: Sr. Member; Aug 7, 2001; 673 posts; 111 upvotes

Dec 2nd, 2020 11:51 pm

ykhehra1 wrote: ↑ Do you also have your bank account attached as backup?

I think my bank account is linked but when I processed the payment, I used my credit card since I figured I'd get my net 0.5% cashback vs net -2.5% commission fee on the foreign exchange rate.

Presumably if you use your bank account, you'll just get charged the forex fee (whether it's from Paypal or from your bank).

Or just enter your credit card details directly into aliexpress, which is what I normally do. (I was initially sketched out a bit by that but have been doing that for a couple of years now.)

Dec 3rd, 2020 1:47 am

the2ndme [OP]: Banned; Oct 10, 2020; 1037 posts; 617 upvotes

Dec 3rd, 2020 1:47 am

soupmaster666 wrote: ↑ Their thresholds for the colours are a little out of whack. Showing high voltage at 14.8V for a high charging voltage (not battery voltage) is accurate if the alternator is running.

Fully charged lead acid battery cells should be 2.1V or mybe 2.15V each, which multiplied by 6 cells is 12.6V (12.5 when it's cold outside). That varies a tiny bit by the battery type. They show "low" at 11.6V but that's very low - it's basically the bare minimum you'd ever want your battery to get to and it's likely too low to start the vehicle.

A fully and completely dead battery is about 1.7V per cell, or 10.8V total - but that's the threshold at which sulfation occurs and it's almost guaranteed there is some amount of permanent damage to the battery.

It's safer to keep the battery not much below 2V per cell, or 12.0V total.

And the range after start is normally 13.4v -15v for most vehicles. Basically ignore this chart on the selling page ...

Dec 3rd, 2020 1:55 am

pererac: Deal Addict; Aug 17, 2008; 1375 posts; 1149 upvotes; Toronto

Dec 3rd, 2020 1:55 am

RudeDoggy wrote: ↑ Rogers World Elite MasterCard.

I use this same card for the same reasons on most of my ebay/ali purchases, and have never been charged extra or some cash advance fee.

The Golden Rule: those who have the gold, make the rules

Dec 3rd, 2020 10:28 am

RudeDoggy: Sr. Member; Aug 7, 2001; 673 posts; 111 upvotes

Dec 3rd, 2020 10:28 am

pererac wrote: ↑ I use this same card for the same reasons on most of my ebay/ali purchases, and have never been charged extra or some cash advance fee.

Shrug, all I can say is that I made two purchases on AliExpress using the Rogers World Elite MasterCard linked to my PayPal account and was charged two cash advance fees.

I've made lots of purchases using my credit card directly with AliExpress with no issues. Only when using the PayPal option was I charged the cash advance fee.

I think it has something to do with the fact that when using PayPal on AliExpress, it also somehow gets processed through Alipay (as shown on my credit card statement) and Rogers Bank treats that as a cash advance.

I've obviously used PayPal with the same credit card at other places and had no issues.

Dec 3rd, 2020 10:48 am

I RFD: Deal Addict; Oct 7, 2008; 2096 posts; 1060 upvotes; Home

Dec 3rd, 2020 10:48 am

So this QC charges two phones simultaneously at 15w? Review photos show 5V 3.1A output printed on device.

Dec 3rd, 2020 1:00 pm

the2ndme [OP]: Banned; Oct 10, 2020; 1037 posts; 617 upvotes

Dec 3rd, 2020 1:00 pm

I RFD wrote: ↑ So this QC charges two phones simultaneously at 15w? Review photos show 5V 3.1A output printed on device.

One of the usb ports is a "QC3.0" ( charge > 5v) as advertised. I'll test it later today and see.

Dec 3rd, 2020 2:24 pm

smokerone: Newbie; Jan 7, 2016; 34 posts; 9 upvotes; Toronto, ON

Dec 3rd, 2020 2:24 pm

Thanks for posting this....don't need one but I ordered 2 separately. Does anyone know why there's shipping charges for more
than one, costing them more to ship?

+1

Dec 3rd, 2020 5:19 pm

I RFD: Deal Addict; Oct 7, 2008; 2096 posts; 1060 upvotes; Home

Dec 3rd, 2020 5:19 pm

the2ndme wrote: ↑ One of the usb ports is a "QC3.0" ( charge > 5v) as advertised. I'll test it later today and see.

The front of the charger also shows 2.4a on one port and QC on the other. Let us know.
Thanks

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