DeWalt 20V MAX Battery Rebuild – Step-by-Step Upgrade from 6Ah to 9.8Ah

DeWalt 20V MAX Battery Rebuild | From 6Ah to 9.8Ah Upgrade In this video, I show you how to rebuild and upgrade a DeWalt 20V MAX 6Ah power-tool battery step-by-step — from safely removing the old cells to spot-welding, balancing, testing, and final charging. What you’ll learn: • Safely disassembling your DeWalt 20V MAX battery pack • Removing old nickel strips and cells • Installing new 21700 cells with insulation rings • Spot-welding new pure nickel plates • Balancing and testing internal resistance (IR) • Verifying charge and final voltage – Molicel P50b 21700 4.85 Ah: https://renewspark.com/products/molic... Tools & Supplies Used 👇 – Nickel strips (10 mm × 0.2 mm): https://renewspark.com/products/0-2mm... – Spot welder: https://amzn.to/4neVzzh – Soldering station: https://amzn.to/4ghKhIA – Kapton tape: https://renewspark.com/products/2-rol... – Fish-paper insulation rings: https://renewspark.com/products/21700... – Internal resistance tester (YR1035+): https://amzn.to/3JQG9Tw ⚡ All rebuild tools, parts, and safety supplies available at https://renewspark.com Rebuild complete – upgraded from 6Ah to 9.8Ah. Tools I Use (Free App): 🔧 Build safer, cleaner battery packs with the RenewSpark Tools app — IR checker, pack designer, wire & nickel sizing, load calculator, and more. 📱 Download on the App Store: https://apps.apple.com/us/app/renewsp... Subscribe for more rebuild tutorials and DIY battery upgrades. ⚡ Want your battery professionally upgraded? We rebuild and upgrade power tool batteries, e-bike batteries, and custom lithium-ion packs. Visit https://renewspark.com and use the contact link to email your battery model — I’ll send you a rebuild quote.