Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A vs RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005)
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 | Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A | RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005) |
|---|---|---|
| Platform | 40V | ONE+ 18V |
| Voltage | 40V MAX | 18V |
| Capacity | 4 Ah | 4 Ah |
| Type | kit | high-output |
| Genuine OEM | Yes | Yes |
| Fuel Gauge | No | Yes |
| Warranty | 3 years | 3 years |
| Price | $109.96 | $54.99 |
| Rating | 8.5/10 | 8.5/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
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
RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005)
Pros
- Genuine RYOBI ONE+ pack backed by RYOBI's 3-year warranty
- LED fuel gauge shows remaining charge at a glance
- 4.0Ah capacity gives meaningfully more runtime than RYOBI's 1.5Ah packs
- Fits the entire ONE+ 18V tool ecosystem
Cons
- Costs more than RYOBI's smaller 1.5Ah or 2.0Ah packs
- ONE+ platform tools tend to be lighter-duty than pro-grade brands
Our Verdicts
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 ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005)
This genuine ONE+ 18V pack pairs real runtime with a built-in fuel gauge — a straightforward upgrade for anyone already in the RYOBI ONE+ ecosystem.
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
$109.96
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