Most cordless tool batteries fail the same way. One or two cells in the pack go bad, the BMS shuts everything down, and you're stuck buying a $330 CAD replacement for what's essentially a $10 problem.

That's the business model. Sealed packs, no repair path, repeat purchases.

We tear these packs apart every day. The shells are fine. The BMS boards are fine. It's almost always 2-3 cells out of 15 that killed the whole thing.

What we do at Second Cell Co.:

• Source factory-spec FlexVolt shells and BMS kits from the same factories

• Install tested, capacity-matched recycled 18650 cells

• Every pack gets a full charge/discharge cycle before it ships

• You get 60V/20V FlexVolt performance at a fraction of the OEM price

The cells we use aren't random pulls. They're tested, sorted by capacity, and matched so the pack charges evenly and lasts. That's the difference between a "rebuilt battery" and a proper one.

If you're a contractor burning through 2-3 packs a year at $300+ each, the math speaks for itself.