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Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 vs Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)

Deciding between the Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 and the Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)? We break down every spec, feature, and trade-off so you can pick the right product for your garden and budget.

Our Pick

Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)

Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2) edges out the Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 thanks to its higher rating (4.7 vs 4.4). That said, the Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 is still a strong choice if its specific strengths align better with your needs.

01 / Specs

Specs comparison

SpecKobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)
PriceCheck PriceCheck Price
Rating4.4/54.7/5Winner
CategoryPower ToolsPower Tools

02 / Pros & Cons

What we like, what to know

Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06

What we like

  • +Compatible with the entire Kobalt 80 Volt max family of tools
  • +Up to 25 percent more runtime than the standard Kobalt 2.0 Ah 80-volt battery
  • +Quickly charges in 40 minutes or less

Worth knowing

  • Details reflect the manufacturer's listing, not independent testing.
  • Availability and price change often — confirm on Amazon before buying.

Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)

What we like

  • +Best-in-class construction: Resistant housing designed to provide increased protection against exposure to common oils, greases, and solvents
  • +All-weather performance: delivers fade free power in extreme jobsite conditions
  • +Fuel gauge onboard: Displays remaining runtime

Worth knowing

  • Details reflect the manufacturer's listing, not independent testing.
  • Availability and price change often — confirm on Amazon before buying.

03 / Who It's For

Who should buy which?

Choose A

The Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06

power tools

Choose B

The Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)

power tools

04 / The Verdict

The verdict

Both the Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 and the Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2) are quality kitchen blending and mixing appliances, but they serve different needs. The Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 is a power tools with a 4.4-star rating, while the Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2) falls in the power tools category with a 4.7-star rating.

Our recommendation: Go with the Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2) for its higher rating (4.7 vs 4.4). However, the Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06 remains a compelling option if its specific strengths align better with how you plan to use it.

Kobalt 80-volt 2.5-Amp Hours Rechargeable Lithium Ion Cordless Power Equipment Battery KB 2580-06

4.4/5 stars

Read full review →

Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)

4.7/5 stars

Read full review →