Kobalt 24V Max · 24V Max
Kobalt 24V Max 4.0 Ah Extended Run Battery (KB 424-03)
Heavy-duty 4.0 Ah 24V pack providing maximum endurance and consistent stroke speed through thick hardwood timbers.
Cell Engineering & Performance
Double the runtime of standard packs with internal thermal baffling and electronic monitoring that prevents over-discharge, overcharge, and overload under aggressive cutting.
Workshop recommendation: The best option for contractors cutting butcher block countertops, dimensional lumber, or sheet metal siding.
Key Features
- 4.0 Ah extended capacity at 24 Volts
- Electronic cell protection against excessive heat and draw
- Integrated push-button battery status indicator
- Fast 45-minute charge cycle
Compatible Cordless Jigsaws in our Catalog
This battery pack is 100% mechanically and electronically compatible with the following saws:
Before You Buy
Ensure you possess a compatible rapid charger from the same manufacturer and platform (or purchase an official Starter Kit bundled with a charger). Lithium-ion packs should not be stored completely depleted; maintain approximately 40% to 60% charge if storing for extended workshop downtime.
When browsing merchant listings on Amazon, verify whether the listing designates a single bare battery pack, a multi-pack, or a complete kit with high-speed charging dock.
