DEWALT 20V MAX 5Ah Lithium-Ion Battery and Charger Kit with Bag (DCB205CK) vs Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850)
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 5Ah Lithium-Ion Battery and Charger Kit with Bag (DCB205CK) | Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850) |
|---|---|---|
| Platform | 20V MAX | M18 |
| Voltage | 20V MAX | 18V |
| Capacity | 5 Ah | 5 Ah |
| Type | kit | high-output |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 3 years | 5 years |
| Price | $123 | $67.99 |
| Rating | 8.9/10 | 8.8/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
DEWALT 20V MAX 5Ah Lithium-Ion Battery and Charger Kit with Bag (DCB205CK)
Pros
- Bundles a 5Ah 20V MAX battery, charger, and a carry bag in one genuine DeWalt kit
- 5Ah capacity is well above DeWalt's base 1.3Ah/1.5Ah starter packs for longer runtime
- Currently in stock on Amazon
- Genuine DeWalt OEM kit
Cons
- Only one battery included — no second pack for swapping mid-job
- 5Ah packs add noticeable weight versus compact packs
- We haven't independently measured runtime; 5Ah is DeWalt's stated capacity
Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850)
Pros
- Genuine Milwaukee M18 pack backed by Milwaukee's 5-year warranty
- Drops straight into any M18 tool — no adapters, no guesswork
- 5.0Ah capacity gives solid runtime for daily-use M18 tools
- REDLITHIUM cell design is Milwaukee's own in-house spec
Cons
- No onboard fuel gauge — can't check remaining charge at a glance
- Costs more than aftermarket M18-compatible packs
- Only fits the M18 platform, not M12 or other brands
Our Verdicts
DEWALT 20V MAX 5Ah Lithium-Ion Battery and Charger Kit with Bag (DCB205CK)
A genuine DeWalt kit that pairs a high-capacity 5Ah pack with a charger and bag — good value if you're adding runtime to an existing 20V MAX toolkit or starting fresh.
Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850)
A genuine Milwaukee M18 pack is the safe first buy for anyone standardized on the M18 platform — real Milwaukee chemistry and the full manufacturer warranty, not a third-party guess.
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