Milwaukee
Milwaukee M18 Battery & Charger Kit
Model: M18B9-2UPC: 45242857784
Lowest at Amazon
$31.35 at AmazonLowest at any Popular Retailer
$31.35 at AmazonWhere to Buy
Prices last updated: July 25th 2026 5:56 pm
Pros
- •Fits perfectly and integrates well with existing Milwaukee tools.
- •Smaller and lighter compared to the original battery, yet offers similar working time.
- •Provides extended battery life and more power than original Milwaukee batteries.
- •Offers excellent value for the price and is highly recommended for its performance.
- •Charges quickly and holds a long charge, ensuring extended usage without interruptions.
- •Comes with two batteries, reducing the risk of running out of power.
Cons
- •Some users experienced battery failures, with batteries not holding a charge after six weeks.
- •Issues reported with batteries not charging at all.
- •Concerns about product longevity due to issues arising after the warranty period.
Bottom Line
The Milwaukee M18 REDLITHIUM HIGH OUTPUT XC8.0 Battery & Dual Bay Rapid Charger Kit is a solid choice for those looking for a lightweight, powerful battery upgrade with quick charging and extended usage. However, be aware of reported issues with battery failures and charging problems post-warranty. For peace of mind, you might consider looking into extended warranty options or additional battery kits as a backup.
What Reviewers Are Saying
Praised
Holds a long charge14%
Charges fast14%
Criticized
Battery won’t charge29%
Battery does not last14%
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