Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850) vs RYOBI ONE+ 18V Fast Charger (PCG004)
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 | Milwaukee M18 REDLITHIUM 5.0Ah Battery (48-11-1850) | RYOBI ONE+ 18V Fast Charger (PCG004) |
|---|---|---|
| Platform | M18 | ONE+ 18V |
| Voltage | 18V | 18V |
| Capacity | 5 Ah | 0 Ah |
| Type | high-output | charger |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 5 years | 3 years |
| Price | $67.99 | $35.91 |
| Rating | 8.8/10 | 8.0/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
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
RYOBI ONE+ 18V Fast Charger (PCG004)
Pros
- Genuine Ryobi OEM charger for the ONE+ 18V platform
- Manufacturer markets it as a 'Fast Charger' model
- Affordable at under $40
- Compact single-bay design
Cons
- Currently showing low stock on Amazon — availability may be inconsistent
- No published amp-hour charge rate on the listing beyond the 'fast' branding
- ONE+ 18V only — will not charge Ryobi 40V packs
Our Verdicts
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.
RYOBI ONE+ 18V Fast Charger (PCG004)
A genuine Ryobi ONE+ charger marketed for faster charging than Ryobi's base charger, though stock has been inconsistent — worth grabbing when available if you're staying within the ONE+ ecosystem.
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