FOLOMOV magnetic keychain charger test

steel_1024 · 2018-09-13T12:38:41.000Z

FOLOMOV’s new portable charger
Design concept is very good, easy to carry around

You can understand everything by looking at the picture!

Transparent plastic box packaging

back

side

The other side

Original battery

Positive

Back

Can be carried on the keychain

Open the wiring, pay attention to the positive pole on the body

Connect 2A load first, test USB power plug, can provide 5V 2A

The new battery starts charging and the charging current is as high as 1.66A

Automatically control the charging current to 0.74A

Charging is nearing completion, down to 0.37A

finished charging

The charge completion cutoff voltage is 4.22V

Blinking

Charging status light indication

iPhone charging

Detect battery remaining capacity

21700 lithium battery is also suitable

Too lazy to type

Directly charge the battery

Thanks for watching

fluke · 2018-09-13T12:57:01.000Z

Thanks for the review.

Where can I get one of those load testers with multiple usb connecotrs?

steel_1024 · 2018-09-13T18:06:03.000Z

fluke:

Thanks for the review.

Where can I get one of those load testers with multiple usb connecotrs?

Here：
https://www.aliexpress.com/item/WEB-U2-Current-Voltmeter-USB-Tester-QC4-PD3-0-2-PPS-Fast-Charging-Protocol-Capacity-Test/32899863192.html

and……

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d_t_a · 2018-09-14T11:47:28.000Z

fluke:

Thanks for the review.

Where can I get one of those load testers with multiple usb connecotrs?

HKJ has reviewed several of those.

I think RD Tech’s HD35 would be a good start.

There’s also the DTU-CC01.

And YZXStudio’s ZL1100 (which I consider as one of the more advanced load testers). And then there is also the EBD-USB+ for graphing/saving with a PC…

fluke · 2018-09-14T13:09:34.000Z

Thanks.

And where did you get the switchable load?

Not seen one with that many inputs that has fixed resistance.

Pete7874 · 2018-09-14T13:47:51.000Z

I’m only seeing 4 LEDs on this charger, so how can you have 1 blinking LED and 4 solid LEDs (5 total)?

Looks like an interesting charger though.

The charge completion cutoff voltage is 4.22V

4.22V after removing from the charger seems a bit on the high side, no?

steel_1024 · 2018-09-14T13:55:33.000Z

fluke:

Thanks.

And where did you get the switchable load?

Not seen one with that many inputs that has fixed resistance.

I ordered from the same store on Taobao.(China)

They also have an adjustable 25W load

steel_1024 · 2018-09-14T14:00:44.000Z

Pete7874:

I’m only seeing 4 LEDs on this charger, so how can you have 1 blinking LED and 4 solid LEDs (5 total)?

4.22V after removing from the charger seems a bit on the high side, no?

1. Should be a bug.

2. I think the voltage is a bit high also.

steel_1024 · 2018-09-15T06:10:31.000Z

d_t_a:

And YZXStudio’s ZL1100 (which I consider as one of the more advanced load testers). And then there is also the EBD-USB+ for graphing/saving with a PC…

Edit:
YZXStudio is a true professional design and a better choice.

d_t_a · 2018-09-15T05:16:31.000Z

steel_1024:

d_t_a:

And YZXStudio’s ZL1100 (which I consider as one of the more advanced load testers). And then there is also the EBD-USB+ for graphing/saving with a PC…

YZX is usually a follower of WEB

(probably off-topic for this thread…)

Is there a ZL1100-equivalent load tester from WEB? Can you point me to a product link or review link? Thanks.

steel_1024 · 2018-09-15T06:08:57.000Z

I spent some time searching for information.

I found YZXStudio to be a truly professional design.

Although it is a bit expensive, it is in a leading position.

Folomov_official · 2018-09-18T13:28:32.000Z

Thank you for the review. Folomov KEY Charger is available on Amazon now.

travis · 2018-09-18T17:27:03.000Z

Seems huge for keychain.
I’d rather just have the Folomov A1 magnetic charger in my pocket.

Pete7874 · 2018-09-18T18:19:43.000Z

travis:

Seems huge for keychain.
I’d rather just have the Folomov A1 magnetic charger in my pocket.

The one that HKJ reviewed was under-charging. Has Folomov fixed that issue yet? Not a big problem, I suppose.