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Red 18V lithium-ion battery and compact charger on white background

THISS

THISS 5.0Ah 18V Li-ion Battery & M12-18C Charger for Milwaukee M18

SKU CH-P7QY-G7H9D

5.0 Ah 18 V lithium-ion replacement battery with M12-18C fast charger for Milwaukee M18 cordless tools

  • Battery typeLithium Ion
  • Product typeBatteries
  • Extended run-time with 5.0Ah lithium-ion capacity
  • 18V power compatible with Milwaukee M18 cordless system
  • Replaces multiple Milwaukee part numbers including 48-11-1850
  • Fast charging via included M12-18C charger
  • Brand-new replacement battery and charger kit

Compatible M18 System Tools

This 5.0Ah 18V lithium-ion battery works with the Milwaukee M18 cordless system. It replaces part numbers such as 48-11-1850 and 48-11-1840 across a wide range of tool models including 2603-20 and 2704-22. The pack is aimed at users who need extended runtime on a single charge. It suits professionals and DIYers who already own M18 tools and want a direct replacement.

Charger Operation And Heat

The included M12-18C charger replenishes the 5000mAh cell at 18V. During a normal recharge the unit runs quietly and stays cool to the touch. Power draw is limited to the charger’s rated input so it can be used on standard household circuits. No additional cooling or ventilation is required for typical top-up cycles.

Sustained Tool Performance

Under continuous high-drain use the 5.0Ah capacity delivers longer runtimes than lower-capacity packs before voltage sag appears. The lithium-ion chemistry maintains steady output through heavy cuts or fastening tasks. Heat builds gradually in the tool rather than the battery, allowing the pack to finish the job without thermal shutdown. Users who need all-day operation on a single battery will still require a second pack.

How it compares

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

Price $37.99
Pricier than about 58% of the 985 comparable items (median $28.99).

Specifications

Product
Product typeBatteries
Power
Battery typeLithium Ion

Questions about this item

How do I install the 5.0Ah 18V battery into my Milwaukee M18 tool, and what step do people often miss?

Slide the battery onto the tool's rail until the latch clicks securely; the step many miss is verifying the latch fully engages so the pack cannot shift during vibration.

What maintenance or replacement will the M12-18C charger need over time?

Keep the charger's contacts and vents clean; the unit has no user-serviceable parts, so replace the charger if the LED indicators fail or charging stops.

What limit appears first when the 5.0Ah pack runs under sustained heavy load?

The pack's internal thermal protection will cut output before the 5000mAh capacity is depleted, letting the cells cool before resuming delivery.

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