About
At RenewSpark, we’re passionate about giving batteries a second life — and saving you money in the process. Based in California, we specialize in rebuilding and reselling high-performance battery packs for power tools, DIY electronics, and more. Whether you’re a contractor, hobbyist, or repair tech, our products are built to deliver reliable performance without the premium price tag.
Our Mission
We believe in sustainability, affordability, and performance. By combining trusted brand components with brand-new, high-quality lithium-ion cells, we offer battery solutions that reduce e-waste and keep your tools running at full strength.
What We Offer
- Rebuilt Battery Packs for Makita, Snap-On, DeWalt, and other major brands — rebuilt exclusively with new cells
- Custom High-Drain Packs for demanding applications like power tools — always using new, high-discharge cells
- DIY-Friendly Packs for RC, LED, Arduino, robotics, and more
- Tested Used Cells for low-drain hobby projects (sold separately and clearly marked)
Every rebuild is tested for voltage, capacity, and internal resistance before it leaves our shop — and we never cut corners on safety or quality.
Why Choose Us?
- Only New Cells in rebuilds and high-drain packs — no exceptions
- Honest Specs – We publish real-world test results
- Fast Shipping – Most orders ship within 1–2 business days
- Responsive Support – We’re here to help
- U.S.-Based – Proudly operating out of California
Whether you’re trying to extend the life of your tools or power your next DIY project, RenewSpark delivers dependable battery solutions backed by integrity and care.
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