DEWALT 20V MAX 5.0Ah Battery (DCB205) vs RYOBI 40V Lithium-Ion 4Ah High Capacity Battery
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 20V MAX 5.0Ah Battery (DCB205) | RYOBI 40V Lithium-Ion 4Ah High Capacity Battery |
|---|---|---|
| Platform | 20V MAX | 40V |
| Voltage | 20V MAX | 40V MAX |
| Capacity | 5 Ah | 4 Ah |
| Type | high-output | high-output |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 3 years | 3 years |
| Price | $61.31 | $104.99 |
| Rating | 8.6/10 | 8.4/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
DEWALT 20V MAX 5.0Ah Battery (DCB205)
Pros
- Genuine DEWALT 20V MAX pack backed by DEWALT's 3-year warranty
- 5.0Ah capacity suits daily-use 20V MAX tools without frequent swaps
- Drop-in fit across the entire 20V MAX tool lineup
Cons
- No fuel gauge readout on this pack
- Costs more upfront than a compact 2.0Ah pack
- Not compatible with FlexVolt-exclusive 60V tools
RYOBI 40V Lithium-Ion 4Ah High Capacity Battery
Pros
- Genuine RYOBI 40V pack backed by RYOBI's 3-year warranty
- 4Ah capacity suits RYOBI's outdoor power equipment lineup — mowers, trimmers, blowers
- Fits the full RYOBI 40V platform
Cons
- Listed as low stock at the time of this write-up — availability can be inconsistent
- Mid-range price relative to smaller-capacity 40V packs
- Only compatible with 40V tools, not ONE+ 18V
Our Verdicts
DEWALT 20V MAX 5.0Ah Battery (DCB205)
The DCB205 is DEWALT's genuine mid-capacity 20V MAX pack — a safe, warranty-backed default for anyone building out a 20V MAX kit.
RYOBI 40V Lithium-Ion 4Ah High Capacity Battery
A genuine RYOBI 40V pack for the outdoor-tool side of the lineup — solid capacity for mowers and trimmers, though stock availability has been inconsistent.
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