10ml No-Clean Liquid Soldering Flux | Aluminum Copper 18650

10ml Liquid Soldering Flux – No-Clean Formula for Aluminum, Copper & More

Get clean, reliable solder joints every time with this 10ml Liquid Soldering Flux. Designed for hobbyists, electronics enthusiasts, and DIY repair technicians, this no-clean flux ensures strong adhesion on a wide range of metals — including pure aluminum sheet, thin aluminum, stainless steel, copper, iron, nickel, and galvanized sheet. It's also ideal for 18650 battery tab soldering and soft-pack battery pack assembly.

Key Features

• No-Water Cleaning Required – No-clean formula leaves minimal residue, saving you time and effort after each job.
• Versatile Metal Compatibility – Works on aluminum, copper, stainless steel, iron, nickel, and galvanized sheet metals.
• 18650 & Battery Pack Ready – Formulated to handle the demands of battery tab welding and soft-pack battery assembly.
• Non-Toxic & Eco-Friendly – Formulated with user and environmental safety in mind.
• Compact & Easy to Apply – Small 10ml bottle (approx. 6 × 2.1 cm) fits neatly in any toolbox or workbench organizer.

Specifications

• Capacity: 10ml per bottle
• Dimensions: Approx. 6 × 2.1 cm (2.4 × 0.83 in)
• Material: Liquid flux
• Pack Includes: 1 × 10ml Soldering Flux Bottle

How to Use

1. Prepare the surface – Ensure the welding area is dry, clean, and free of oil, grease, and oxidation before applying flux.
2. Apply flux – Apply a small amount of liquid flux to the target welding area.
3. Set your soldering iron temperature – Use a high-power soldering iron at approximately 350–400°C. For soft-pack batteries, use a soldering iron of at least 200W; for larger assemblies, 500W or more is recommended. A pointed or horseshoe-shaped tip is ideal for efficient heat transfer.
4. Heat & solder – Press the iron tip firmly against the welding area for a few seconds to pre-heat, then quickly feed solder wire to the joint. Keep the iron in contact with the metal surface throughout — do not lift during the process.
5. Work continuously – Keep heating and feeding solder wire while hot for the strongest bond.

⚠ Important Note: This flux is NOT suitable for soldering circuit boards or electronic PCB components. It is intended for metal-to-metal joining applications only.

Made in Mainland China.

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Frequently Asked Questions

Q: Can this liquid soldering flux be used on circuit boards or PCB components?

A: No — this flux is specifically formulated for metal-to-metal soldering on materials like aluminum, copper, stainless steel, iron, nickel, and galvanized sheet. It is not recommended for circuit boards or sensitive electronic PCB components. Please use a dedicated PCB/electronics flux for those applications.

Q: Do I need to clean the flux residue after soldering?

A: This is a no-clean formula, meaning it leaves minimal residue and does not require water cleaning after use. Simply allow the joint to cool and you're done — making it a fast, convenient choice for battery packs and metal fabrication projects.

Q: What soldering iron power is recommended for 18650 battery tab soldering?

A: For soft-pack batteries, a soldering iron of at least 200W is recommended. For larger battery assemblies or thicker metal connections, a 500W or higher iron is advised. Always preheat the welding area and maintain continuous contact for the best results.