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Two black lithium-ion battery packs side by side

BatteryJack inc.

BatteryJack inc. 2X 2.0Ah Lithium-ion Battery 48-11-2001

SKU CH-WD4A-2Z0R9

Twin-pack 4 V 2.0 Ah lithium-ion batteries fit Milwaukee M4 cordless tools and replace part 48-11-2001

  • Product typeBatteries
  • Parts warranty2 Year Warranty
  • 0 Ah capacity powers longer run-times per charge
  • 4 V lithium-ion chemistry keeps weight low and output steady
  • Twin-pack gives a ready spare for continuous work
  • Designed for Milwaukee 48-11-2001 and 0490-22 M4 tools
  • Two-year warranty backs the Banshee replacement cells

Compatible Replacement

This twin-pack supplies two 2.0Ah lithium-ion batteries that fit Milwaukee M4 cordless tools using code 48-11-2001. Each cell delivers 4V and 2000MAH capacity for drop-in replacement.

Voltage And Capacity Limits

The 4V platform restricts peak power to what M4-class tools can draw, so sustained high-torque applications will drain the 2000MAH cells faster than higher-voltage systems.

Upgrade From Worn Packs

Replaces depleted original packs when run-time falls below useful levels; the jump is worth it if existing batteries no longer hold a full charge through a typical work session.

How it compares

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

Price $26.99
Typical for this category: the median of 985 items is $28.99.

Specifications

Product
Brand nameBanshee
Product typeBatteries

Questions about this item

Should I buy the single 2.0Ah battery or the twin pack for my Milwaukee M4 tools?

The listing supplies two 2.0Ah batteries, so you receive double the capacity of a single unit in one purchase.

What does the 2000mAh rating mean when I use the battery in a Milwaukee 0490-22?

It indicates the charge the cell can deliver at 4V, which determines how long the tool runs before recharge.

How does the 4V lithium-ion chemistry limit performance in M4 cordless tools?

The 4V output caps the maximum power the tool can draw, so runtime depends on the tool's current demand.

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