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Hardware & Repair
Teardowns, measurements and repairs on the workbench.
Hardware & Repair
Defective Walter 20V Li-Ion Battery – Complete Teardown and Measurement
A Walter 20V battery from the hardware store suddenly refused to charge. I took it completely apart, measured every single cell, and show you step by step what’s inside and why it failed. Warning: Do NOT attempt this yourself!
2025-11-16