BatteryFits

As an Amazon Associate, BatteryFits earns from qualifying purchases at no cost to you. Compatibility is not a safety endorsement — always verify voltage and platform.

Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit vs Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit

Head-to-head spec comparison to help you pick the right battery for your needs.

Milwaukee

$59.89

Buy on Amazon
vs

Milwaukee

$112

Buy on Amazon
Deciding between a genuine pack and a cheaper aftermarket one? Read our honest genuine vs aftermarket batteries guide.Read the guide →

Spec Winner

Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit

Wins on 2 of 3 spec categories

Spec-by-Spec Comparison

SpecMilwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger KitMilwaukee 48-59-1850 M18 XC 5.0 Starter Kit
PlatformM12M18
Voltage12V MAX18V
Capacity2 Ah5 Ah
Typecompactkit
Genuine OEMYesYes
Fuel GaugeNoNo
Warranty5 years5 years
Price$59.89$112
Rating8.5/108.8/10
Buy on AmazonBuy on Amazon

Pros & Cons

Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit

Pros

  • Genuine Milwaukee M12 packs backed by Milwaukee's 5-year warranty
  • Kit includes two batteries plus a charger — a solid starter bundle for the M12 platform
  • Compact 2.0Ah cells keep M12 tools light for one-handed work
  • Straightforward drop-in fit for any M12 tool

Cons

  • 2.0Ah per pack is on the lower end for longer-runtime jobs
  • Only compatible with M12 tools, not M18
  • No fuel gauge on these compact cells

Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit

Pros

  • Bundles a genuine Milwaukee M18 XC 5.0Ah battery with a charger in one kit
  • 5.0Ah capacity gives meaningfully more runtime than Milwaukee's compact 2.0Ah/3.0Ah packs
  • Genuine Milwaukee OEM, not a third-party bundle
  • Good starter option if you're buying into M18 for the first time or need a spare battery-and-charger set

Cons

  • Only includes one battery — no second pack for hot-swapping
  • 5.0Ah packs are larger and heavier than compact packs, which can make lighter tools feel nose-heavy
  • We haven't run a runtime test ourselves; 5.0Ah is the manufacturer's stated capacity

Our Verdicts

Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit

A genuine Milwaukee M12 two-battery-and-charger kit is the straightforward, warranty-backed way to get started or restock on the M12 platform — not the highest capacity, but the safest default.

Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit

A solid way to add a genuine, higher-capacity M18 battery and charger in one purchase — good value if you need more runtime than a starter 2.0Ah kit provides.

Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit

$59.89

Buy on Amazon

Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit

$112

Buy on Amazon

More Comparisons

Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit vs Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850)Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850) vs Milwaukee 48-59-1850 M18 XC 5.0 Starter KitMilwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit vs Milwaukee M18 REDLITHIUM Forge HD12.0 BatteryMilwaukee M18 REDLITHIUM Forge HD12.0 Battery vs Milwaukee 48-59-1850 M18 XC 5.0 Starter KitDEWALT 20V MAX 5.0Ah Battery (DCB205) vs Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger KitDEWALT 20V MAX 5.0Ah Battery (DCB205) vs Milwaukee 48-59-1850 M18 XC 5.0 Starter KitDEWALT 20V MAX Compact 2.0Ah Battery (DCB203) vs Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger KitDEWALT 20V MAX Compact 2.0Ah Battery (DCB203) vs Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit