
WORX 20V PowerShare · 20V MAX (18V Nominal)
WORX 20V PowerShare PRO 4.0 Ah High-Capacity Battery (WA3578 / WA3553)
Pro-grade high-capacity battery pack. Features intelligent cell cooling wraps that dissipate heat during prolonged heavy timber cuts.
Cell Engineering & Performance
Delivers 2x the runtime of standard 2.0 Ah packs. Designed for heavy remodeling, subfloor cutouts, and continuous framing with WORX cordless jigsaws.
Workshop recommendation: Recommended if you use your saw for extensive deck work or major home renovations.
Key Features
- Double the runtime for extensive carpentry sessions
- Cell-cooling wrap material shields battery from thermal shutdown
- Fuel gauge indicator for convenient charge checks
- Universal PowerShare platform compatibility
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.


