DEWALT 12V MAX 2.0Ah Battery (DCB122) 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.
Deciding between a genuine pack and a cheaper aftermarket one? Read our honest genuine vs aftermarket batteries guide.Read the guide →
Spec-by-Spec Comparison
| Spec | DEWALT 12V MAX 2.0Ah Battery (DCB122) | RYOBI ONE+ 18V Lithium-Ion Starter High Performance Kit with 2.0 Ah Battery, 4.0 Ah Battery, and Charger |
|---|---|---|
| Platform | 12V MAX | ONE+ 18V |
| Voltage | 12V MAX | 18V |
| Capacity | 2 Ah | 0 Ah |
| Type | compact | kit |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 3 years | 3 years |
| Price | $34.9 | $97 |
| Rating | 8.3/10 | 8.6/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
DEWALT 12V MAX 2.0Ah Battery (DCB122)
Pros
- Genuine DEWALT pack backed by DEWALT's 3-year warranty
- Compact 2.0Ah size fits DEWALT's 12V MAX lineup of light-duty tools
- Lowest price point of any genuine pack in this lineup
Cons
- Only compatible with 12V MAX tools, not 20V MAX or FlexVolt
- Limited runtime for anything beyond light-duty use
- No fuel gauge on this pack
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
DEWALT 12V MAX 2.0Ah Battery (DCB122)
The DCB122 is the genuine, budget-friendly entry point for DEWALT's 12V MAX platform — right-sized for compact tools, not a fit for the 20V MAX lineup.
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
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