The Story
Everything you need for clean, reliable wire-to-terminal solder connections in a single kit. The 51-piece Solder Slug and Flux Assortment pairs battery terminal solder slugs with flux across multiple sizes, pre-sorted in a 6-hole plastic bin that's ready to mount in your toolbox or service cart the moment it arrives.
What's Included
- Battery terminal solder slugs — multiple sizes to cover a range of wire gauges and terminal types
- Flux — for clean solder flow and oxide-free connections
- 6-hole plastic organizer bin — pre-sorted storage included with the kit
- 51 pieces total
Specifications
| Application | Wire-to-terminal soldering — battery terminals, ring terminals, and butt splices |
| Contents | Solder slugs and flux, multiple sizes |
| Storage included | Yes — 6-hole plastic bin, pre-sorted |
| Total pieces | 51 |
| Best used with | Heat gun or soldering iron rated for terminal work |
Best For
- Automotive technicians — battery terminal replacements, wire harness repairs, and ring terminal connections are cleaner and faster with pre-formed solder slugs than with solder wire alone
- Fleet maintenance shops — technicians who regularly replace battery cables and terminals benefit from having the right slug size on hand rather than measuring and cutting solder wire each time
- Marine and RV service — corrosion-prone environments where a gas-tight, flux-cleaned solder joint outlasts crimp-only connections
- Electrical contractors — anyone working with heavy-gauge wire terminations who needs a consistent, repeatable result across multiple connections
How Solder Slugs Work
Solder slugs are pre-formed solder pellets sized to fit inside crimp-style battery terminals and ring lugs. Unlike loose solder wire, each slug delivers a measured amount of solder directly to the joint — no guesswork, no waste.
Basic process:
- Strip the wire to the correct length and insert it into the terminal barrel
- Drop the appropriately sized solder slug into the terminal opening
- Apply heat with a heat gun or soldering iron until the slug melts fully and wicks into the strands
- Allow to cool without disturbing — the flux cleans the joint as it flows, leaving a bright, oxide-free solder connection
The result is a mechanically solid, gas-tight joint that resists vibration and corrosion better than a crimp-only connection. Questions about sizing or technique? Contact us — we're happy to help.
Shipping & Ordering
- Ships within 1–2 business days from our warehouse
- Free shipping on orders $50 and over
- Volume pricing available — save up to 20% when ordering 3 or more
- Stocking for a service department? Ask us about B2B pricing and scheduled restocking — contact us
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Everything you need for clean, reliable wire-to-terminal solder connections in a single kit. The 51-piece Solder Slug and Flux Assortment pairs battery terminal solder slugs with flux across multiple sizes, pre-sorted in a 6-hole plastic bin that's ready to mount in your toolbox or service cart the moment it arrives.
What's Included
- Battery terminal solder slugs — multiple sizes to cover a range of wire gauges and terminal types
- Flux — for clean solder flow and oxide-free connections
- 6-hole plastic organizer bin — pre-sorted storage included with the kit
- 51 pieces total
Specifications
| Application | Wire-to-terminal soldering — battery terminals, ring terminals, and butt splices |
| Contents | Solder slugs and flux, multiple sizes |
| Storage included | Yes — 6-hole plastic bin, pre-sorted |
| Total pieces | 51 |
| Best used with | Heat gun or soldering iron rated for terminal work |
Best For
- Automotive technicians — battery terminal replacements, wire harness repairs, and ring terminal connections are cleaner and faster with pre-formed solder slugs than with solder wire alone
- Fleet maintenance shops — technicians who regularly replace battery cables and terminals benefit from having the right slug size on hand rather than measuring and cutting solder wire each time
- Marine and RV service — corrosion-prone environments where a gas-tight, flux-cleaned solder joint outlasts crimp-only connections
- Electrical contractors — anyone working with heavy-gauge wire terminations who needs a consistent, repeatable result across multiple connections
How Solder Slugs Work
Solder slugs are pre-formed solder pellets sized to fit inside crimp-style battery terminals and ring lugs. Unlike loose solder wire, each slug delivers a measured amount of solder directly to the joint — no guesswork, no waste.
Basic process:
- Strip the wire to the correct length and insert it into the terminal barrel
- Drop the appropriately sized solder slug into the terminal opening
- Apply heat with a heat gun or soldering iron until the slug melts fully and wicks into the strands
- Allow to cool without disturbing — the flux cleans the joint as it flows, leaving a bright, oxide-free solder connection
The result is a mechanically solid, gas-tight joint that resists vibration and corrosion better than a crimp-only connection. Questions about sizing or technique? Contact us — we're happy to help.
Shipping & Ordering
- Ships within 1–2 business days from our warehouse
- Free shipping on orders $50 and over
- Volume pricing available — save up to 20% when ordering 3 or more
- Stocking for a service department? Ask us about B2B pricing and scheduled restocking — contact us
