Featured Products – Best Sellers, Ready to Ship
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0.2 mm Pure Nickel Strip Roll – 10 ft / 25 ft / 50 ft – 10 mm Width – for Battery Pack Spot Welding
Regular price From $8.99 USDRegular price -
M18 18V Battery Rebuild Kit – 10‑Cell BMS, Nickel, Shell, Hardware (No Cells)
Regular price $19.99 USDRegular price -
RYO 18V Battery Rebuild Kit – 10-Cell 18650 BMS, Nickel, Shell, Hardware (No Cells)
Regular price $15.99 USDRegular price -
DeWalt DCB205 20V Battery Rebuild Kit – 10-Cell BMS, Nickel, Shell & Hardware (No Cells)
Regular price $19.99 USDRegular price -
Pre-Cut Nickel Strips for DeWalt 20V MAX 5Ah Battery Pack
Regular price $10.99 USDRegular price -
50× Pure Nickel Strips 0.2×10×100 mm – Pre-Cut for Battery Pack Spot Welding
Regular price $9.99 USDRegular price
New Arrivals – Just Added
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Enerkey 2S 30A 7.4V–8.4V Lithium Battery BMS Protection Board for 18650/21700 Packs
Regular price $8.99 USDRegular price -
Pre-Cut Nickel Strips for Milwaukee M18 18V Battery Pack
Regular price $10.99 USDRegular price
Rebuilding Power with Precision
Watch a DeWalt 20 V battery pack rebuilt using the same premium pre-cut nickel strips available at RenewSpark.
Shop Pre-Cut Nickel Strips →
RenewSpark Tools — Free Battery Builder Tools
Accurate nickel-strip sizing, pack designer, BMS guides, and more.
Available now on the iOS App Store.
Blog – Battery Tips & Guides
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What Nickel Strip Size Do You Need? The Complet...
Learn the right nickel strip thickness and width for battery building and tool pack rebuilds.
What Nickel Strip Size Do You Need? The Complet...
Learn the right nickel strip thickness and width for battery building and tool pack rebuilds.
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How to Troubleshoot a 2S 8.4V BMS (HW-391): Com...
A quick troubleshooting guide for the popular 2S 8.4V HW-391 BMS. Learn how to verify wiring, battery polarity, and charger setup so your 2-cell lithium pack charges and discharges correctly.
How to Troubleshoot a 2S 8.4V BMS (HW-391): Com...
A quick troubleshooting guide for the popular 2S 8.4V HW-391 BMS. Learn how to verify wiring, battery polarity, and charger setup so your 2-cell lithium pack charges and discharges correctly.
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Battery Upgrade Results: How Molicel P50B and P...
Real customer test results: Mike upgraded DeWalt packs with Molicel P50B and P30B cells, then ran constant-load discharges. The upgraded packs held higher voltage and delivered longer runtime compared to...
Battery Upgrade Results: How Molicel P50B and P...
Real customer test results: Mike upgraded DeWalt packs with Molicel P50B and P30B cells, then ran constant-load discharges. The upgraded packs held higher voltage and delivered longer runtime compared to...
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5S2P (18V) Power Tool Batteries: Why Every Bran...
Why do DeWalt, Makita, and Snap-on rely on the 18V 5S2P layout? Because it balances voltage, current, weight, and runtime. Here’s why 5S2P dominates—and how a professional rebuild can bring...
5S2P (18V) Power Tool Batteries: Why Every Bran...
Why do DeWalt, Makita, and Snap-on rely on the 18V 5S2P layout? Because it balances voltage, current, weight, and runtime. Here’s why 5S2P dominates—and how a professional rebuild can bring...
