Milwaukee Genuine OEM 48-59-2401 M12 Lithium-Ion 12V Battery Charger with LED Indicator 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.
Verdict
It's a Tie
The Milwaukee Genuine OEM 48-59-2401 M12 Lithium-Ion 12V Battery Charger with LED Indicator and Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A are evenly matched — your choice depends on which features matter most to you.
Spec-by-Spec Comparison
| Spec | Milwaukee Genuine OEM 48-59-2401 M12 Lithium-Ion 12V Battery Charger with LED Indicator | Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A |
|---|---|---|
| Platform | M12 | 40V |
| Voltage | 12V MAX | 40V MAX |
| Capacity | 0 Ah | 4 Ah |
| Type | charger | kit |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | No |
| Warranty | 5 years | 3 years |
| Price | $18.5 | $109.96 |
| Rating | 8.3/10 | 8.5/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
Milwaukee Genuine OEM 48-59-2401 M12 Lithium-Ion 12V Battery Charger with LED Indicator
Pros
- Genuine Milwaukee OEM charger, not aftermarket
- LED charge indicator shows status at a glance
- Very affordable at under $20
- Small and light enough to keep in a bag or truck
Cons
- M12-only — will not charge M18 packs
- Manufacturer listing doesn't publish a charge-time spec
- Check current stock before ordering; listing shows check-availability status
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 Genuine OEM 48-59-2401 M12 Lithium-Ion 12V Battery Charger with LED Indicator
A straightforward, inexpensive genuine Milwaukee M12 charger with an LED indicator — a sensible replacement or spare if you're staying within the M12 platform.
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.
Milwaukee Genuine OEM 48-59-2401 M12 Lithium-Ion 12V Battery Charger with LED Indicator
$18.5
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
$109.96