Review of a 65W Kaiweets KETS02 Smart Soldering Iron

[@KerryWongBlog]

Coupon code added for KETS02. See video description.

[@Pillowcase]

Pretty great for the price. I love my miniware stuff but I paid a whole lot more than $35. This thing is a steal.

[@davidgrey943]

Hi, Kerry I own a FINRSI iron from Ali express with a 65w supply and I have been really pleased with the performance . I am glad that I purchased the iron and would recommend this to anyone who needs a compact soldering iron.

[@andymouse]

Useful stuff ! there are so many of these it's getting confusing but I love my TS100....cheers.

[@tommyle628]

There must be one OEM who makes a lot of these, I've seen at lease 3 brands for the same design, packaging, just different names on it. Take the FNIRSI for example.

[@lucsteffens]

Bought 1, thx for code. Under 70€ full box delivered at home 😊

[@diydantex6150]

Thank you

[@victorvaldes9238]

Like your videos, easily explained and very informative, I get to learn more since you take the time to explain everything very professionally. I just want to ask about the USB tester you used in this video. Thank you!

[@KerryWongBlog]

Thanks! The USB tester I used is a Uni-T UT658.

[@gamerpaddy]

try measuring the tip to mains ground, those usb powersupplies leak quite a bit of ac.... and having 60VAC on the tip even at a low current isnt that useful when working on sensitive stuff

[@Teukka72]

Speaking of which, there is some audio noise when the heating element operates. What does the ground lead on the iron look like? 🤔

[@KerryWongBlog]

I use a wireless microphone so the noise is likely the interference from the PD adapter.

[@adrian.parano]

Great video! thanks! I wonder what would happen if yo manually set voltaje to 5V.. will it work at all? It would have to increase current beyond the capability of most (or may be all) USB adapters in market.. Thanks!

[@KerryWongBlog]

No, the minimum voltage required is 9V. It doesn't work with 5V.

[@adrian.parano]

thanks! sorry, my mistake!.. have you verified the current when using 9v? thanks!

[@KerryWongBlog]

Yes, when using 9V the current is only at 1.6A.

[@adrian.parano]

@@KerryWongBlog great! thanks! that would mean less than 14w of heat

[@johncoops6897]

@@adrian.parano - it's just a resistive heating element, like any other soldering iron. Basic Ohm's Law applies... 9V @ 1.6A = 14.4 = 5.625 Ohms. 20V @ 3.25A = 65W = 6.15 Ohms. Those will be the "hot" resistances, and since the heat will be different they don't exactly match each other. You could operate it from 9V using a Boost Converter... let's say 85% efficiency, so 65W @ 9V divided by 0.85 = 8.5 Amps. That is a ridiculous amount of current to draw from 9V, and you'd need a beefy DC-DC converter - you'd be better off buying a 65W Phone charger.

[@DerekWoolverton]

Bought one.

[@qwaqwa1960]

I got the basic version, "Fnirsi"-branded. Arrrrgh!!!!!!! What's with these crazy names?!?!?

[@johncoops6897]

This is far too expensive compared to (arguably better) opposition devices like Pinecil.