I've been looking and thinking. My requirements are: USB powered, ~3" long thin tip, able to handle old heavily soldered point to point circuits, replacement tips available. I already have a Hakko FX888D, X-Tronic 3020, butane, and a couple of big Wen guns. But I also have a need for one that is long and narrow to get into tight spots on crowded point to point chassis. Something that I can get in there and solder quickly without burning all the insulation of the surrounding wires. Here is a typical that might be on top of my list. Anyone with experience with these or suggestions please.

I really question the 8W rating but have seen similar with up to 100W rating if that is even possible with these.

 

8W on a tiny tip like that would never melt a big point-to-point solder blob.

 

I checked the ad. It is battery powered. 8W is the re-charging power. The soldering iron element must use more power than that to be effective, but none of the ads mention how much. I can't find any customer reviews.

 

For you needs, suggest you look for a wired, small, pencil iron with at least 30W of power.

 

The specs are weird (which is why I posted to see if anyone had experience). Up to ~100W. Finrisi has one speced at 9-20 working volts which seems typical for some. 20V @ 3.5A! They do recommend running them from a power bank, which I have but maybe not large enough power capacity or even high enough voltage. I was hoping someone had some experience with them. Not to be used except for those hard to get to spaces that my Hakko is too large for. I did check AliX but the data on specs is even vaguer there.

This is the Finrisi. Seems for all of them it requires a hefty power supply which makes sense.

 

I looked at wired (too large of tips, not any smaller than what I have now). Looked at quite a few different models of "pencil" irons both USB stand alone and with supplied power/control units. And still liked the first one I showed with the 510 style tip. So, went back to AliX (anything from china on Amazon is cheaper buying direct from china) and found a similar one that has the same 3 levels of heating. Didn't have quite the exact tip I wanted but if it suits me when it arrives and gets tested with my power brick I'll buy the tip I want if it works out.