Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit vs RYOBI ONE+ 18V Lithium-Ion Starter High Performance Kit with 2.0 Ah Battery, 4.0 Ah Battery, and Charger
Head-to-head spec comparison to help you pick the right battery for your needs.
Spec Winner
Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit
Wins on 3 of 4 spec categories
Spec-by-Spec Comparison
| Spec | Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger Kit | RYOBI ONE+ 18V Lithium-Ion Starter High Performance Kit with 2.0 Ah Battery, 4.0 Ah Battery, and Charger |
|---|---|---|
| Platform | M12 | ONE+ 18V |
| Voltage | 12V MAX | 18V |
| Capacity | 2 Ah | 0 Ah |
| Type | compact | kit |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 5 years | 3 years |
| Price | $59.89 | $97 |
| Rating | 8.5/10 | 8.6/10 |
| Buy on Amazon | Buy 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
RYOBI ONE+ 18V Lithium-Ion Starter High Performance Kit with 2.0 Ah Battery, 4.0 Ah Battery, and Charger
Pros
- Includes two batteries — a compact 2.0Ah pack and a higher-capacity 4.0Ah pack — plus a charger, all genuine Ryobi
- Two different pack sizes cover both lightweight/compact use and longer-runtime use from one purchase
- Good value for a two-battery-plus-charger bundle at under $100
Cons
- Currently showing low stock on Amazon
- Because it bundles two different-capacity batteries, we don't collapse that into one capacity number — check the listing for the exact 2.0Ah/4.0Ah split
- We haven't run our own runtime tests; capacities are Ryobi's stated ratings
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.
RYOBI ONE+ 18V Lithium-Ion Starter High Performance Kit with 2.0 Ah Battery, 4.0 Ah Battery, and Charger
A genuine Ryobi kit that pairs a compact 2.0Ah pack with a higher-capacity 4.0Ah pack and one charger — solid value for ONE+ owners who want both a light pack and a runtime pack.
RYOBI ONE+ 18V Lithium-Ion Starter High Performance Kit with 2.0 Ah Battery, 4.0 Ah Battery, and Charger
$97