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Red rectangular lithium-ion battery pack with black accents and slide-on contacts

THISS

THISS 12V 3.5Ah Lithium-ion Battery Red

SKU CH-742D-VGKDY

A 12 V, 3.5 Ah lithium-ion replacement pack for Milwaukee M12 cordless tools

  • Rated voltage12 V
  • Amperage3.5AH
  • Corded or cordlessCordless
  • Battery typeLithium Ion
  • Labor warranty5 Years
  • Product typeBatteries
  • 5Ah capacity extends tool runtime per charge
  • 12V lithium-ion chemistry delivers consistent power output
  • Red finish matches Milwaukee M12 series aesthetics
  • Compatible with 48-11-2430 and multiple M12 part numbers
  • Fits Milwaukee 2401-20, 2402-20, 2403-20 and many other models

12 V 3.5 Ah Lithium-ion replacement for M12 tools

This 12 V lithium-ion pack delivers 3.5 Ah capacity and replaces Milwaukee M12 batteries including part numbers 48-11-2420, 48-11-2430, 48-11-2401 and 48-11-2411. It fits a wide range of M12 cordless tools such as the 2401-20 drill, 2450-20 impact driver and 2470-20 multi-tool. The red and black housing matches the original colour scheme.

M12 platform voltage and capacity limits

The battery operates at the fixed 12 V nominal voltage of the M12 system, so it cannot power tools that require higher platform voltages. Its 3.5 Ah rating sets the energy available per charge; extended runtime tasks will need a higher-capacity pack or a second battery. Compatibility is limited to the listed M12 models and part numbers.

Compact lithium-ion build with slide mount

The lithium-ion chemistry provides consistent output without memory effect and the pack uses the standard M12 slide-style mount for quick tool changes. The compact form factor keeps weight low for overhead or one-handed work. A one-year warranty covers defects in materials and workmanship.

How it compares

Measured against everything we stock in Disposable & Rechargeable Batteries, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 74% of the 985 comparable items (median $28.99).

Specifications

Product
Product typeBatteries
Color and finishRed
Power
Rated voltage12 V
Amperage3.5AH
Corded or cordlessCordless
Battery typeLithium Ion
In the box
Number of items1 pack

Questions about this item

Which capacity should I choose for my M12 tools — 3.5Ah or a different pack?

The 3.5Ah rating provides more run-time per charge than lower-capacity M12 packs, reducing how often you stop to swap batteries on compatible tools.

What does the 3.5Ah rating actually deliver when the battery is in a tool?

It supplies 3500mAh at 12V nominal, so a tool drawing 1A can run for roughly three and a half hours before the pack needs recharging.

Does this battery use the standard M12 slide interface and what does that limit?

Yes, it fits the M12 slide mount used on tools such as the 2401-20 drill and 2450-22 impact driver, and the interface caps voltage at 12V for all compatible models.

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