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Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery

Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery

4.9· 229 ratings

Last price we saw

$129.00at Acme Tools, last seen Nov 4

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Our take on the Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery

The Bosch CORE18V 4.0 Ah is a compact 18V lithium-ion pack for Bosch 18V cordless tools. It weighs 1.1 lb and Bosch rates it at twice the runtime of the older 2.0 Ah BAT612 pack. CoolPack 2.0 adds faster cooling, and a charge-status indicator shows remaining power. The best new price is $89.99 at eBay as of November 4, 2026, the only new listing found.

Best forOwners of Bosch 18V drills, drivers and sawsTrades who want a lighter pack for overhead or one-handed workBuyers adding a second battery to a Bosch kitAnyone replacing an older 2.0 Ah Bosch pack
Pros
  • Twice the runtime of Bosch's 2.0 Ah BAT612, per Bosch
  • Light at 1.1 lb for a 4.0 Ah pack
  • CoolPack 2.0 improves heat dissipation for longer pack life
  • Charge-status indicator on the pack
  • Charges in about 0.9 hours on Bosch 18V chargers
Cons
  • Only one new listing found, at $89.99, so little price competition
  • 4.0 Ah is mid-capacity; high-draw tools like circular saws drain it faster than 6.0 or 8.0 Ah packs
  • Works only with Bosch 18V tools and chargers, not other brands
  • Battery only; no charger in the box

Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery prices at every store

  • eBayCheck price at eBay
  • Acme ToolsCheck price at Acme Tools

Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery price history

Lowest price we've seen: $129.00 on Nov 4 at Acme Tools. Tracked across 1 store since Nov 4.

What reviewers say

Rated 4.9 out of 5 from 229 ratings. Owners report solid runtime and light weight in Bosch 18V tools.

Pros
  • Noticeably longer runtime than the 2.0 Ah pack
  • Light enough for extended overhead use
  • Holds up well in regular jobsite use
  • Charge indicator is handy
Cons
  • Price per amp-hour is high for a single pack
  • Runs down quickly in heavy-draw tools

Specifications

Power Source
Cordless
Power Voltage
18V
Battery Voltage
18V
Battery Type
Lithium-Ion
Battery Capacity
4.0 Ah
Number Of Batteries Included
1
Battery Charge Time
0.9 hours
Battery Run Time
2X the runtime (compared to Bat612 18V 2 Ah Battery)
Weight
1.1 lb
Height
4.6 in
Length
1.85 in
Width
3 in
Tool Type
Power Tool Battery
Tool Subtype
Compact Battery
Tool Series
CORE18V
Safety Highlights
CoolPack 2.0 delivers faster cooling
Battery System Compatibility
Bosch 18V
Compatible Charger
Bosch 18V Lithium-ion chargers
Tool System Compatibility
Bosch 18V
Compatible Tools
Bosch 18V Lithium-ion tools
Included Accessories
(1) 18V CORE18V Lithium-Ion 4.0 Ah Compact Battery
Color
Black
Design Highlights
CoolPack 2.0 technology, Charge-status indicator
Material
Blend

Questions and answers

Is the Bosch CORE18V 4.0 Ah worth it?
Yes if you already own Bosch 18V tools and want more runtime without much weight. At $89.99 for one pack it is a fair but not cheap upgrade over a 2.0 Ah battery.
How does it compare with Bosch's 2.0 Ah battery?
Bosch rates it at twice the runtime of the BAT612 2.0 Ah pack. It weighs more, about 1.1 lb, but still suits one-handed and overhead work.
How long does it take to charge?
About 0.9 hours on a Bosch 18V lithium-ion charger. It works with Bosch 18V chargers only.
Which tools does it fit?
Any Bosch 18V lithium-ion tool, including CORE18V and older 18V lines. It does not fit other brands' tools.
What is in the box?
One 18V CORE18V 4.0 Ah compact battery. No charger and no tool are included.
When is it cheapest?
The best new price found is $89.99 at eBay as of November 4, 2026. With only one new listing, watch for Bosch kit bundles that include the pack at a lower effective price.
What do buyers say about the Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery?
Rated 4.9 out of 5 from 229 ratings.
Where can I buy the Bosch CORE18V 18V Compact Lithium-Ion 4.0 Ah Battery?
2 stores we checked sell it, including eBay, Acme Tools.

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