A studio shot of the black Bosch CORE18V 18V 4Ah battery pack featuring a large red release button and blue Amp-hour labeling on the side.
An informational diagram of the battery highlighting key features such as high-power 21700 cells, CoolPack 2.0 technology, copper end plates, and the high-resolution charge status indicator.
A side profile view of the battery pack displaying the CORE18V branding, the 4Ah capacity rating, and the heat dissipation vents.
Front view of the battery showing the electrical connection terminals, the Bosch logo, and the on-board LED fuel gauge for monitoring charge levels.
Rear view of the battery pack focusing on the large textured red release button used to detach the battery from tools and chargers.
A marketing graphic titled Same Battery New Look comparing previous CORE18V designs with the updated AMPShare compatible labeling on the side.
A studio shot of the black Bosch CORE18V 18V 4Ah battery pack featuring a large red release button and blue Amp-hour labeling on the side.
The 18V battery pack sitting on a wooden surface at a construction site, with a blurred background of framing structures.
A close-up of a worker's gloved hand inserting the CORE18V battery into a charging base on a wooden workbench.
The 4Ah battery pack mounted on a Bosch fast charger, sitting on a wooden plank at a sunny jobsite.
A warranty information graphic stating 18V Limited Warranty 3 Year Battery against a dark blue background.
Bosch CORE18V™ Advantage promotional video
A studio shot of the black Bosch CORE18V 18V 4Ah battery pack featuring a large red release button and blue Amp-hour labeling on the side.
An informational diagram of the battery highlighting key features such as high-power 21700 cells, CoolPack 2.0 technology, copper end plates, and the high-resolution charge status indicator.
A side profile view of the battery pack displaying the CORE18V branding, the 4Ah capacity rating, and the heat dissipation vents.
Front view of the battery showing the electrical connection terminals, the Bosch logo, and the on-board LED fuel gauge for monitoring charge levels.
Rear view of the battery pack focusing on the large textured red release button used to detach the battery from tools and chargers.
A marketing graphic titled Same Battery New Look comparing previous CORE18V designs with the updated AMPShare compatible labeling on the side.
A studio shot of the black Bosch CORE18V 18V 4Ah battery pack featuring a large red release button and blue Amp-hour labeling on the side.
The 18V battery pack sitting on a wooden surface at a construction site, with a blurred background of framing structures.
A close-up of a worker's gloved hand inserting the CORE18V battery into a charging base on a wooden workbench.
The 4Ah battery pack mounted on a Bosch fast charger, sitting on a wooden plank at a sunny jobsite.
A warranty information graphic stating 18V Limited Warranty 3 Year Battery against a dark blue background.
Bosch CORE18V™ Advantage promotional video
BOSCH

Bosch Battery GBA18V40 18V 4Ah CORE18V Compact Lithium Ion (CoolPack 2.0 Fuel Gauge AMPShare Cordless Power Tool Powerhouse Module)

In stock
SKU: GBA18V40
$99.00 USD

Description

Bosch Promtional Logo Logout

Contractor-Grade 18V Max Lithium-Ion 4.0 Ah Advanced Power Cell Module with CoolPack 2.0 Thermal Management and On-Board Fuel Gauge

The Bosch GBA18V40 CORE18V 18V 4Ah Compact Lithium Ion Battery delivers specialized electrical current delivery utility and exceptional power density efficiency across high-demand cordless equipment arrays. Engineered with a single-layer configuration of next-generation 21700 lithium-ion cells and a lightweight 1.1-lb profile, this high-performance energy source provides continuous current flow while minimizing user fatigue during overhead installations. This technician-class power solution resolves premature thermal shutdown constraints, high internal cell electrical resistance bottlenecks, and sudden mid-task tool stoppage by combining an advanced CoolPack 2.0 heat dissipation matrix with high-efficiency copper end plates. Outfitted with an integrated high-resolution LED charge status indicator and full multi-brand AMPShare platform system cross-compatibility, this robust power cell optimizes subcontractor daily project deployment metrics during prolonged concrete rotary hammer drilling runs, intense metal grinding applications, and continuous wood structural fastening operations.

Best Used For:

  • Overhead Structural Fastening: Supplying high-current electrical juice to impact drivers during repetitive overhead commercial steel framing runs without causing operator strain.
  • Percussive Masonry Drilling: Driving consistent structural torque through rotary hammer drills when boring anchor pilot holes into deep poured concrete blocks.
  • Continuous Metal Grinding: Maintaining high rotational velocities inside cordless angle grinders during extensive weld bead cleanup and thick pipe cutting procedures.

Key Performance & Safety Features

  • CoolPack 2.0 Thermal Guard: Advanced internal geometric structure pulls damaging thermal energy quickly away from individual cells to scale up overall operational longevity.
  • Next-Gen 21700 Cell Architecture: Single-layer high-density cell grouping delivers 60% more power capacity metrics than traditional double-layer legacy cell blocks.
  • Copper Connectivity Rails: Integrated copper power rails and solid connection terminals lower internal impedance paths to facilitate maximum power delivery efficiency.
  • High-Resolution Fuel Gauge: On-board multi-segment LED indicator provides immediate, highly visible readouts of remaining battery cell capacity to block unexpected downtime.
  • AMPShare System Universal Grid: Engineered for absolute operational cross-compatibility across all native 18V tools, charging ports, and authorized multi-brand system platforms.

What's Included

  • (1) GBA18V40 18V CORE18V Lithium-Ion 4.0 Ah Advanced Power Battery Module

Technical Specifications

Specification Value
Brand Name Bosch
Model Number GBA18V40
Product Classification Type Cordless Power Tool Battery Pack
Output Voltage Rating 18V
Total Energy Capacity 4.0 Ah
Cell Technology Chemistry Lithium-Ion (Single-Layer 21700 Form Factor)
Thermal Dissipation Engine CoolPack 2.0 Material Technology Matrix
Internal Conductor Rails High-Efficiency Low-Resistance Copper Plates
Capacity Status Indicator Integrated LED High-Resolution Fuel Gauge
System Platform Support All Bosch 18V Tools & AMPShare Partner Equipment
Outer Shroud Composition High-Impact Structural Polymer Plastic
Net Module Hardware Weight 1.1 lbs.
Standard Warranty Policy 1 Year Limited (2 Years via ProVantage Registration)

Pro-Tip: To achieve absolute maximum lifespan, do not store these high-power modules on a smart rapid charger overnight when they are already fully primed. Standard lithium cell structures remain far more stable when kept away from continuous high-voltage trickle current loads inside your field storage lockers.