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Milwaukee M18 REDLITHIUM XC 5.0 Ah Battery 2-Pack - 55% Off

Name: Milwaukee M18 REDLITHIUM XC 5.0 Ah Battery 2-Pack - 55% Off
Brand: Milwaukee
SKU: B09NNHN8S8
Price: 119.99 USD
Availability: InStock

Posted Jun 24, 2026

$119.99$269.00

55% OFFYou save $149.01

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Is this a good deal?

Delivers up to 2.5X more run-time, 20% more power and 2X more life than standard lithium-ion batteries. The M18 REDLITHIUM XC 5.0 Extended Capacity Battery Pack features superior pack construction, electronics and performance to deliver more work per charge and more work over the life of the pack than any battery on the market. The M18 REDLITHIUM XC 5.0 Battery features an advanced design, protecting the pack against harsh jobsite environments. This protection routes water away from the electronics and out of the battery pack extends run-time and life by minimizing heat and prevents pack failures from vibration or drops.
This unique to Milwaukee design also allows the battery to operate in extreme cold weather conditions (below O degree F/-18 degree C). Managed by Milwaukee's exclusive REDLINK Intelligence, the battery features overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. It also provides full system compatibility with 250+ M18 cordless solutions. Upgrade to the M18 REDLITHIUM XC 5.0 Battery Pack to instantly increase the run-time and durability of your M18 cordless tools.
REDLINK intelligence: provides optimized performance and overload protection using total system communication between tool, battery and charger
Best-in-class construction: offers long-lasting performance and durability
FUEL gauge onboard: displays remaining runtime for less downtime on the job
All-weather performance: delivers fade free power in extreme jobsite conditions
Versatility: powers more than 200 plus Milwaukee M18 cordless power tools
Includes: two M18 18-Volt lithium-ion XC 5.0 Ah extended capacity batteries

Great Deal

Save 55% on a 2-pack of Milwaukee M18 REDLITHIUM XC 5.0 Ah batteries. They deliver up to 2.5x more runtime and 20% more power than standard batteries, with REDLINK intelligence and all-weather performance. Ideal for pros using M18 tools.

What we like

2.5X more runtime than standard batteries
20% more power output
Works in extreme cold (below 0°F)
Compatible with 250+ M18 tools

Watch out for

No charger included in this pack
5.0 Ah capacity not the highest available

Tip: Buy these if you already own an M18 charger; otherwise, consider a kit with charger.

Our Take

Best for: Milwaukee M18 tool users needing extra runtime and durability.

0 Ah battery pack is a solid upgrade for anyone invested in the M18 system. These batteries deliver noticeably longer runtime and more power than standard packs, thanks to the REDLINK intelligence that optimizes performance and protects against overload. The rugged construction handles drops, vibration, and cold weather down to -18°C without fading. 0 Ah monsters. 99 is a steal at 55% off the $269 list price. Keep in mind you'll need a separate charger if you don't already have one. Overall, this is a practical, high-value purchase for pros and serious DIYers who use Milwaukee tools daily.

Price Analysis

At $119.99 for a two-pack, this is a 55% discount off the original $269.00. That's roughly $60 per battery, well below typical per-unit pricing for M18 5.0 Ah batteries. Even without specific price history, this is a rare deep discount - likely near an all-time low. Great time to stock up.

Common Questions

Are these batteries compatible with all M18 tools?

Yes, they work with all 250+ M18 cordless tools. The REDLINK intelligence ensures proper communication and overload protection.

Do these batteries come with a charger?

No, this is a 2-pack of batteries only. A separate M18 charger is required.

What is the real-world runtime compared to a standard 2.0 Ah battery?

Expect roughly 2.5 times longer runtime per charge, depending on the tool and workload. For example, a circular saw may cut 80-100 2x4s on a single charge.