Bosch GBA18V40-2PK 18V CORE18V 4Ah Advanced Power Battery, 2-Pack | Lightweight Power for 18V Tools

Powerful, Lightweight Battery Duo for 18V Bosch Tools

The Bosch GBA18V40-2PK combines two CORE18V 4 Ah Advanced Power Batteries in a compact, lightweight package designed to keep you moving on busy job sites. Each battery is engineered to deliver sustained power with less fatigue, helping you work longer without the bulk of heavier packs. This duo is ideal when you’re balancing demanding tasks with portable comfort.

With our exclusive CoolPack 2.0 technology, the pack cools quickly to maintain performance under load, potentially extending the life of the battery in demanding environments. A high-resolution charge-status indicator offers a clear read on remaining runtime, so you can plan tool changes without guesswork. The design leans on high-power lithium-ion cells and a single layer of enhanced 21700 cells to maximize efficiency and reduce resistance during continuous use.

Two batteries aren’t just about more energy; they’re about smarter energy management on-site. The copper end plates, power rails, and a flexible circuit board contribute to efficient energy flow, helping you get the most from every drill, grinder, or saw. At roughly 1.10 lb per battery, the 2-pack stays surprisingly nimble, enabling longer sessions with standard to medium-duty applications including drilling into concrete, metal, and wood; metal grinding; cutting; and light-duty chipping.

The GBA18V40-2PK is designed for seamless compatibility with Bosch 18V tools and chargers, and it supports the AMPShare system for broader cross-brand versatility. This means a streamlined workflow for crews using multiple cordless products and a common charging routine. The result is a practical balance of power, portability, and dependable runtime that fits real-world workflows without locking you into a single tool family.

Key Benefits at a Glance

• LIGHTWEIGHT SOLUTION: Move through tasks with less fatigue thanks to a compact battery design.
• POWER AND RUNTIME: 2x the runtime and 60% more power than the older 2 Ah pack for consistent performance.
• HIGH-POWER LITHIUM-ION CELLS: Enhanced 21700 cells improve efficiency and response under load.
• CUTTING-EDGE BATTERY DESIGN: Copper end plates, rails, and a flexible PCB reduce resistance for smoother operation.
• BOSCH-EXCLUSIVE COOLPACK 2.0: Faster cooling supports longer life under demanding use.
• COMPACT OPERATION: At 1.10 lbs per battery, you gain agility without sacrificing capability.
• CHARGE-STATUS INDICATOR: Clear, high-resolution readout keeps you informed on the go.
• COMPATIBILITY: Designed for 18V Bosch tools and chargers, with AMPShare system support.

Real-World Scenarios

Think of projects that mix precision with power. The GBA18V40-2PK supports continuous drilling into concrete, metal, and wood; quick metal grinding; clean cuts; and even light-duty chipping. On a framing job, you can swap batteries without slowing progress; in a workshop, you can run a cordless drill, grinder, or cutter with confidence while maintaining balance and control.

For professionals who rely on a dependable battery platform, the combination of long runtime, rapid cooling, and an indicator readout helps you stay organized and productive. While outcomes vary by tool and task, users commonly notice steadier performance during extended sessions and less downtime spent swapping packs.

Maximizing Longevity and Performance

• Store in a cool, dry place and avoid exposing packs to extreme temperatures for extended periods.
• Use the AMPShare ecosystem to simplify charging across compatible tools and brands.
• Regularly monitor the charge status to optimize workflow planning on busy days.