Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit vs Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
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 48-59-1850 M18 XC 5.0 Starter Kit | Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A |
|---|---|---|
| Platform | M18 | 40V |
| Voltage | 18V | 40V MAX |
| Capacity | 5 Ah | 4 Ah |
| Type | kit | kit |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 5 years | 3 years |
| Price | $112 | $109.96 |
| Rating | 8.8/10 | 8.5/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit
Pros
- Bundles a genuine Milwaukee M18 XC 5.0Ah battery with a charger in one kit
- 5.0Ah capacity gives meaningfully more runtime than Milwaukee's compact 2.0Ah/3.0Ah packs
- Genuine Milwaukee OEM, not a third-party bundle
- Good starter option if you're buying into M18 for the first time or need a spare battery-and-charger set
Cons
- Only includes one battery — no second pack for hot-swapping
- 5.0Ah packs are larger and heavier than compact packs, which can make lighter tools feel nose-heavy
- We haven't run a runtime test ourselves; 5.0Ah is the manufacturer's stated capacity
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
Pros
- Bundles a 4.0Ah 40V battery (OP4040) with a charger (OP403A) in one genuine Ryobi kit
- 4.0Ah is a mid-to-high capacity pack for the 40V outdoor-power platform
- Currently in stock on Amazon
- Genuine Ryobi OEM parts, not aftermarket
Cons
- Only one battery included — no second pack for hot-swapping on longer yard jobs
- 40V packs are heavier than ONE+ 18V packs, worth weighing if you're carrying it around
- We haven't independently timed a charge or measured runtime; 4.0Ah is Ryobi's stated rating
Our Verdicts
Milwaukee 48-59-1850 M18 XC 5.0 Starter Kit
A solid way to add a genuine, higher-capacity M18 battery and charger in one purchase — good value if you need more runtime than a starter 2.0Ah kit provides.
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
A genuine Ryobi 40V battery-and-charger bundle with a solid 4.0Ah pack — practical if you're buying into the 40V outdoor platform or need a spare set.
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
$109.96
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