Iso-Tip Soldering Irons: Tool FAQs

ISO-TIP Soldering Irons – Common Questions & Answers

Over the years we have received many of the same questions. Many of you are looking for specs to figure out which soldering iron will fit your needs the best. This page will answer all of those questions. If this page still doesn’t tell you what you’re looking for refer to our FAQ page for more help.

7000 Series Cordless Soldering Iron Questions & Answers


What are the Specs on my cordless soldering iron’s battery?


Which cordless tips can be used with which iron?

All of our cordless tips are interchangeable with our 7000 Series Soldering Irons. Here’s our complete catalog.

How to install a new battery?

How to Rewire a 7700 soldering iron

Recommended soldering iron for what AWG?

We recommend that you use size 16 AWG or smaller for our 7000 series. If you intend to get above that size, we recommend moving to our butane powered torches. These torches are capable of using as big as 2/0 AWG solder wire. For more information on this subject click here.

What voltage output does my transformer have?

Your transformer should have an output of 1.7 volts.



Butane Tools Questions & Answers

Which is a better butane soldering iron?


Which Butane Tips Can I Use with My Iron?


What about the butane torches?


Can I Refill My Butane Powered Tools?

Yes, we recommend a refined non-clogging butane. We use Master Ultratane for refilling our own tools here at the shop. BUY HERE.




Other ISO-TIP Tool Related Questions

I Used Your Silver Solder Paste, Now I can’t get it to a re-flow point. What do I need to do?

Our silver solder paste is made up of fine metal dust. It has a low melting point and a much higher re-flow temperature. You must heat it to above 650oF to get it to re-flow. Please remember to be careful when reheating on delicate circuitry. For more information on our Silver Solder Paste  click here.

The Soldering Iron Is a Different Color Then What’s Online – Does That Mean I Can’t Get It Replaced?

The answer in short is no. As with most things in life our soldering irons have been upgraded from time to time. What does this mean to you? This means that there are a lot of variations out there in many different colors. Many of these have the same product number. For more information on replacing your iron click here.

I Can’t Find the Tool Anywhere on Your Site, I Need a Replacement Part What Can I do?

We are sorry to hear that your tool is not working anymore, but there are many products that have been discontinued over the years. If you would like to see the full list of discontinued products you may find it on our web site by visiting our obsolete soldering tools page.

What does the LED on the #7800 “60” PRO Charge mean?

The LED on our 7800 model signifies the battery is no longer using the fast charge feature. In order to reset the iron depress the switch on the left side of the iron after you use it to reset the switch. This will take it off of its trickle charge mode and attain a full and fast charge again.

What Does the LED on the #7904 Mean?

The LED on your irons charger base shows you whether or not the iron is charging. When you LED is red your iron is not charging.Your LED will turn a yellow or green color when it is charging. The LED does not tell you if your iron is done charging.

My Iron Will Not Hold as Long of a Charge as It Used To, Why is that?

As most of you know as with all things mechanical or electrical, our Irons have a cycle life. This means after a certain number of charges, usage cycles or amount of time. Parts of your tool will begin to fail. If your iron is no longer holding a charge, but all other things are still working properly. You likely will need a new battery. We sell batteries for all of our irons here. If you would like us to do a refurbishment  click here.

What Type of Solder Wire Should I use?

We recommend using 14 to 16 gauge wire when using any of our Cordless Soldering Irons (Models #7700, #7800 and #7904). Any larger gauge wire it is recommended that you use one of our Butane Soldering Irons (Models #9010, #7977 and #7971)

I have gone to the FAQ Page and I still have questions What Now?

If you still have questions either about your tool or a tool your thinking of purchasing feel free to send us an email at or click here. We would be happy to answer any questions that you may have.