Ryobi
OP4040 + OP403A
$107.99
Weighing a cheaper aftermarket pack? Read our honest genuine vs aftermarket batteries guide first.Read the guide →
Pros & Cons
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
At a Glance
40VPlatform
40V MAXVoltage
4 AhCapacity
kitType
YesGenuine OEM
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
Offer receipt current through 2026-08-27 · Price and availability may change
My Verdict
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
$107.99
Offer receipt current through 2026-08-27 · Price and availability may change
| Full Specifications | |
|---|---|
| Platform | 40V |
| Voltage | 40V MAX |
| Capacity | 4Ah |
| Type | kit |
| Genuine OEM | Yes |
| Fuel Gauge | Yes |
| Warranty | 3years |
Head-to-Head Comparisons
Ryobi 40V Battery and Charger Kit, 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A
$107.99
Offer receipt current through 2026-08-27 · Price and availability may change