DEWALT 12V MAX 2.0Ah Battery (DCB122) vs DEWALT 20V MAX Compact 2.0Ah Battery (DCB203)
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 →
Verdict
It's a Tie
The DEWALT 12V MAX 2.0Ah Battery (DCB122) and DEWALT 20V MAX Compact 2.0Ah Battery (DCB203) are evenly matched — your choice depends on which features matter most to you.
Spec-by-Spec Comparison
| Spec | DEWALT 12V MAX 2.0Ah Battery (DCB122) | DEWALT 20V MAX Compact 2.0Ah Battery (DCB203) |
|---|---|---|
| Platform | 12V MAX | 20V MAX |
| Voltage | 12V MAX | 20V MAX |
| Capacity | 2 Ah | 2 Ah |
| Type | compact | compact |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 3 years | 3 years |
| Price | $34.9 | $38.95 |
| Rating | 8.3/10 | 8.4/10 |
| 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
DEWALT 20V MAX Compact 2.0Ah Battery (DCB203)
Pros
- Genuine DEWALT pack backed by DEWALT's 3-year warranty
- Compact 2.0Ah size keeps drills and drivers light and balanced
- Lowest-cost genuine-OEM 20V MAX battery in this lineup
- Fits the full 20V MAX tool range
Cons
- 2.0Ah runtime is limited for high-draw tools like saws or grinders
- No fuel gauge on this compact pack
- Not a fit for FlexVolt 60V-only tools
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.
DEWALT 20V MAX Compact 2.0Ah Battery (DCB203)
The DCB203 is DEWALT's genuine compact 20V MAX pack — the cheapest way into real DEWALT chemistry, best suited to light tools rather than heavy-draw ones.
More Comparisons
DEWALT 12V MAX 2.0Ah Battery (DCB122) vs Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850)DEWALT 20V MAX Compact 2.0Ah Battery (DCB203) vs Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850)DEWALT 12V MAX 2.0Ah Battery (DCB122) vs Milwaukee M18 REDLITHIUM Forge HD12.0 BatteryDEWALT 20V MAX Compact 2.0Ah Battery (DCB203) vs Milwaukee M18 REDLITHIUM Forge HD12.0 BatteryDEWALT 12V MAX 2.0Ah Battery (DCB122) vs Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger KitDEWALT 20V MAX Compact 2.0Ah Battery (DCB203) vs Milwaukee M12 REDLITHIUM 2.0Ah Battery (2-Pack) & Charger KitDEWALT 12V MAX 2.0Ah Battery (DCB122) vs DEWALT 20V MAX 5.0Ah Battery (DCB205)DEWALT 20V MAX Compact 2.0Ah Battery (DCB203) vs DEWALT 20V MAX 5.0Ah Battery (DCB205)