PowerSmart PS76440B 20V 4.0Ah Lithium-Ion Battery | 2x Runtime, Overcharge Protection

Double the Capacity. Double the Runtime. Same 20V Platform.

The PowerSmart PS76440B is the high-capacity upgrade in the PowerSmart 20V battery lineup. At 4.0Ah — double the capacity of the PS76020B 2.0Ah — it delivers significantly longer runtime per charge on demanding tools like the PS76122A chainsaw and PS76101A-2B leaf blower. One battery, more work, fewer swaps.

• 20V / 4.0Ah High-Capacity Lithium-Ion — double the amp-hours of the 2.0Ah pack; ideal for extended sessions on high-draw tools like chainsaws, mowers, and blowers
• Compatible with All PowerSmart 20V Cordless Tools — drop-in replacement across the entire PowerSmart 20V platform; same connector, same voltage, more runtime
• Integrated Microchip Overcharge Protection — built-in safety circuitry prevents overcharging, over-discharging, and overheating to protect both the battery and your tools
• No Memory Effect & Virtually No Self-Discharge — charge at any point without reducing long-term capacity; holds its charge in storage so it’s ready when you need it
• High-Quality Lithium-Ion Cells — built for long-lasting performance and durability across hundreds of charge cycles

PS76440B vs. PS76020B — Which Battery Do You Need?

• PS76020B (2.0Ah) — lighter, ideal for shorter sessions and lighter-duty tools
• PS76440B (4.0Ah) — double the runtime, best for chainsaws, mowers, and extended yard work sessions

Compatible PowerSmart 20V Tools Include

• PS76122A 20V 12" Cordless Chainsaw
• PS76101A-2B 20V Cordless Leaf Blower
• All other PowerSmart 20V platform tools

Note: Battery only — charger not included. For best results, use with a PowerSmart 20V fast charger. Store in a cool, dry location when not in use.