Will these fit my M12 drill and charger?

They are built to the M12 form factor and listed as compatible with the original Milwaukee tool and charger. Check your tool's model against the compatibility list before buying.

How do these compare with Milwaukee's own M12 packs?

Capacity is 2,500mAh, above the 1.5Ah compact OEM pack and near the 3.0Ah XC pack, but in a compact body. They are not Milwaukee-branded, so the OEM warranty and fuel gauge behavior do not carry over.

Do I need to charge them before first use?

Yes. The maker says to fully charge each pack before its first use.

Is there a memory effect?

No. The cells are listed as having no memory effect, so partial charging between jobs is fine.

Two 12V 2,500mAh lithium-ion replacement batteries. The charger and tools are not included.

What warranty comes with them?

The maker lists a one-year warranty on the packs.

What do buyers say about the Milwaukee M12 Replacement Li-ion Battery 2-Pack?

Rated 4.9 out of 5 from 91 ratings.

Where can I buy the Milwaukee M12 Replacement Li-ion Battery 2-Pack?

7 stores we checked sell it, including JB Tools, NAPA, Ace Hardware, The Home Depot, Amazon.

Milwaukee M12 Replacement Li-ion Battery 2-Pack

Q: Where is the Milwaukee M12 Replacement Li-ion Battery 2-Pack cheapest?

At Amazon, for $25.99, 67% under what the other stores charge, as of our latest check.

Best price now

$25.99at AmazonChecked 2 h ago

67% under what the other stores charge

Compared across 7 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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What reviewers say

4.9 / 591 ratings

Buyers rate these packs highly, with 91 ratings averaging 4.9 out of 5. Most praise the fit in M12 tools and chargers and the runtime for the capacity. Few negative points appear in the ratings given.

What people mention

FitPraisedBuyers say the packs click into M12 tools and the Milwaukee charger like the originals.
RuntimePraisedOwners report solid run time for a compact pack at this capacity.
ValuePraisedReviewers like getting two packs for less than OEM batteries.
OEM vs third-partyMixedSome buyers question long-term life and warranty compared with Milwaukee-branded packs.

About the Milwaukee M12 Replacement Li-ion Battery 2-Pack

This is a 2-pack of 12V Li-ion replacement batteries for Milwaukee M12 tools. Each battery has a 2500mAh (2.5Ah) capacity. The batteries are made to match the original connector and voltage, and they work with the original tool and charger.

Built-in intelligent program protection guards against overcharging. The batteries have no memory effect. Fully charge each battery before first use.

Voltage

12V

Capacity

2500mAh (2.5Ah)

Battery type

Li-ion

Color

Black and red

Pack size

2 batteries

Warranty

1 year

Compatible part numbers

48-11-2401, 48-11-2402, 48-11-2440, 48-11-2411, C12 B, C12 BX, M12, M12 XC

Compatible tools

Milwaukee M12 tools, including models 2590-20, 49-24-0145, 49-24-0146, 2207-20, 2238-20, 2239-20, 2290-20, 2310-21, 2401-20, 2410-20, 2420-20, 2450-20, 2460-20, 2470-20, 2471-20, C12 D, C12 DD, C12 HZ

Care

Store in a cool, dry place. Do not disassemble, crush or impact. Keep away from water and fire. Keep away from children.