Best Nickel Strips for Battery Packs: High-Purity Tabs for Spot Welding
From DIY 18650 packs to Li-Po builds, choosing the right nickel strips improves weld quality, current handling, and long-term durability. This guide highlights five top nickel strip options, explaining who they’re best for and why. It’s ideal for hobbyists, hobbyist-builders, and small workshop technicians seeking reliable, corrosion-resistant tabs for spot welding or soldering.
Product summary table
| Product | Material | Size / Thickness | Best For | Notes |
|---|---|---|---|---|
| SHONAN Pure Nickel Strip 0.15x6x50mm | 99.6% Nickel | 0.15 x 6 x 50 mm | High-capacity Li-ion packs; spot welding | 50 pcs; corrosion resistant |
| SHONAN Pure Nickel Strip 0.1x8mm, 32 ft | 99.6% Nickel | 0.1 x 8 mm | Long runs; soldering and welding | 32 ft roll; versatile |
| MatchWhiz 0.15x27mm, 16.4 ft | Nickel Plating Strip | 0.15 x 27.2 mm | Standard 18650 packs; DIY welding | 5 m roll; spacing 20.2 mm |
| SHONAN Pure Nickel Strip 0.1x4x100mm | 99.6% Nickel | 0.1 x 4 x 100 mm | Slim packs; multiple parallel strings | 100 pcs; flexible layout |
| Solnique Nickel Strips, 0.15mm x 7mm | Nickel | 0.15 x 7 mm | General battery assembly; 18650/21700 | Roll-friendly; 10 m equivalent |
SHONAN Pure Nickel Strip 0.15x6x50mm – 50 Pcs
Best for high-capacity packs where space is a premium. This 0.15 mm thick strip supports steady current draw while remaining pliable for tight pack layouts. The 50-piece pack provides enough pieces for multiple string configurations.
Why selected: The 99.6% purity and corrosion resistance support reliable long-term connections in Li-ion, Li-Po, NiMH, and NiCd packs. Use for spot welding where consistent heat input is critical. Best for builders who need consistent performance across numerous cells.
Limitations: The small size may require careful cutting and handling for large packs; ensure parallel strings are appropriately designed to meet current requirements.
SHONAN Pure Nickel Strip 0.1x8mm, 32 ft
Long, continuous length is ideal for DIY builds requiring extended runs or custom harnessing within a pack. The 0.1 mm thickness provides flexibility for tight tolerances while maintaining current-carrying capabilities.
Best for: builders who need to cover longer cell strings and want easy handling with soldering and spot welding. This strip doubles as a plating option if you’re pursuing a plated finish. Caution: roll ends can kink if bent sharply during installation.
MatchWhiz 0.15x27mm (16.4 ft) Nickel Strip
Best for standard 18650 and similar packs. The wider width improves current distribution and reduces heat concentration during welding. The 16.4 ft length supports multiple assemblies from a single roll.
Why chosen: Good weldability and high conductivity suit typical DIY battery builds. It balances ease of use with reliable performance. Limitations: Wider strips require precise spacing in pack designs; ensure your enclosure accommodates the width.
SHONAN Pure Nickel Strip 0.1x4x100mm
Best for compact or modular packs where long single strings are needed. The 0.1 mm thickness with 4 mm width offers a slim profile for high-density layouts while maintaining current capability.
Selected for: packs emphasizing modularity or tight packing geometry. Limitation: Very thin strips can be more prone to bending during installation; handle with care to avoid creasing.
Solnique Nickel Strips, 0.15mm x 7mm
Good all-around option for a variety of packs and configurations. The 7 mm width provides a stable welding surface while maintaining a compact form factor.
Best for: general battery assembly tasks and intermediate-density packs. Caution: ensure compatibility with your welder and cell tab width to avoid poor connections.
Buying Guide
What thickness do I need for my pack?
- Thicker strips (0.15 mm and above) handle higher currents and are more resistant to tearing, but may require more heat during welding.
- Thinner strips (0.1 mm) are more flexible in tight spaces yet can be less durable under high current.
What width matters?
- Wider strips (7–27 mm) distribute current better and reduce heat concentration, suitable for larger packs.
- Narrow strips (4–6 mm) fit compact designs and lightweight assemblies but may need careful current planning.
What about length and quantity?
- Long rolls or large quantities are cost-efficient for DIY builders constructing multiple packs.
- Smaller packs are convenient for a single project but may cost more per unit.
What other considerations help prevent issues?
- Purity matters: 99.6% nickel offers better corrosion resistance and weld reliability than lower-purity options.
- Corrosion resistance is key for longevity in Li-ion, Li-Po, NiMH, and NiCd systems.
- Compatibility with your welder or soldering tool is essential; some strips are optimized for spot welding while others are also suitable for plating.
FAQ
- What is the main advantage of high-purity nickel strips? They provide strong, corrosion-resistant connections that endure repeated charging and discharging cycles.
- Can nickel strips be used for soldering? Yes, many strips are designed for both soldering and spot welding, depending on hardness and thickness.
- Which width should I choose for an 18650 pack? Wider strips (around 7 mm or more) are better for higher-current strings; narrower strips suit compact layouts.
- Are nickel strips reusable after welding? Reusability depends on weld quality and the metal’s condition; repeated cycles may degrade joints if not properly designed.
- Do these strips work with Li-Po batteries? Yes, most strips listed are compatible with Li-Po, Li-ion, NiMH, and NiCd battery packs when used correctly.
- Is there a risk of stripping or tearing during installation? Thinner strips are more prone to creasing if bent sharply; handle with care.