Batteries and chargers / Bosch 18V
BATTERYBosch 18V

Bosch GBA18V40 18V battery

GBA18V40 is a single 18V 4.0Ah (72 Wh) pack, no charger. Single pack: GBA18V60; two-pack: GBA18V40-2PK.

Published manufacturer specifications; sources last checked 2026-10-25.

Specifications

Battery capacity (each)
What this means

Amp-hours (Ah) is the battery's charge capacity. At the same voltage, a higher Ah pack runs longer between charges but is usually larger and heavier. Smaller packs keep the tool lighter for overhead and light work; larger packs suit saws, grinders and other high-draw tools.

4.0 Ah (from the maker's box list)
Energy
What this means

Watt-hours (Wh) is the total energy stored, roughly voltage times amp-hours. It is the fairest way to compare packs of different voltage. Watt-hours also matter for shipping and air travel: airlines limit lithium-ion batteries, and packs over 100 Wh generally need airline approval.

72 Wh
Battery weight
What this means

Battery weight is the pack on its own, as listed by the maker. Add it to the tool-only weight to estimate the working weight. Higher-capacity packs add weight, which you will notice in overhead and all-day work.

1.1 lb
Warranty
What this means

This is the maker's published warranty term. Terms for tools, batteries and chargers often differ, and some depend on registration or exclude certain uses. Read the maker's terms for what is covered, how claims are handled and whether proof of purchase is required.

3 Year Limited Warranty
Dimensions (L x W x H)4.6 x 3 x 1.85 in

Compare this model with another tool.

Buying options

Find GBA18V40 prices on Amazon Find GBA18V40 prices at eBay New tab, US retailers. Search results open where no exact listing is on file. Check the listing says GBA18V40; marketplace sellers vary.

What is in the box with the GBA18V40?

GBA18V40 18V CORE18V Lithium-Ion 4 Ah Advanced Power Battery

Part of the Bosch 18V system. See "Works with" for the maker's own compatibility statement.

Quick answers

Which tools does the GBA18V40 fit?
It is a Bosch 18V system battery. Which batteries fit Bosch 18V tools?
How many Ah is the GBA18V40?
4.0 Ah (from the maker's box list) per battery, 72 Wh energy, as Bosch publishes it.
Which chargers charge the GBA18V40?
Chargers whose maker statement covers Bosch 18V batteries: GAL18V-40, GAL18V6-80. Each statement is linked under Chargers for this battery.
Which kits include the GBA18V40?
5 kits on this site list the GBA18V40 by model number in Bosch's box list, including GDR18V-1860CB25, GDS18V-330CB25, GDX18V-1860CB25, GSB18V-975CB25.
Is the GBA18V40 sold in a multi-pack?
Yes: GBA18V40-2PK (2x GBA18V40 18V CORE18V Lithium-Ion 4 Ah Advanced Power Batteries).
What is the GBA18V40 warranty?
3 Year Limited Warranty, as Bosch publishes it.

Ranked lists that include this battery

Also sold as

  • GBA18V60 single: GBA18V60 18V CORE18V Lithium-Ion 6 Ah High Power Battery
  • GBA18V40-2PK multi-pack: 2x GBA18V40 18V CORE18V Lithium-Ion 4 Ah Advanced Power Batteries

Chargers for this battery

Chargers whose maker statement covers Bosch 18V batteries, each with the statement's source.

Which batteries fit which tools, in Bosch's own words: Bosch 18V battery compatibility.

Kits on this site that include the GBA18V40

Kits whose maker box list names the GBA18V40 by model number.

Tools we cover that run on Bosch 18V

Every Bosch 18V tool takes this system's batteries; capacity (Ah) changes run time, not fit.

Owner reviews

Read the owner reviews on BoschTools.com

Sources

  1. Bosch US product page GBA18V40 (features), retrieved 2026-10-25

Spotted a wrong number? Report a spec error (opens an email with the model filled in). We re-check against the maker's page and correct the page.