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Ryobi 40V OP4026A Cordless Drill Replacement Battery 6000mAh

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New arrival
From $178.99 USD $220.99
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Fits Ryobi RY40210 and compatible 40V cordless tools; replaces OP4026A, OP4026, OP4030, OP4015, OP4050, OP4050A, BPL3626, BPL3626D, BPL3640, BPL3640D, BPL3650, BPL3650D, and related OEM pack numbers.
40V nominal voltage delivers consistent torque across drill, saw, and impact applications; 6000mAh capacity supports extended runtime on single charge without swaps.
Connector slides straight into Ryobi 40V slot with positive contact tab engaging first; locking lever clicks down to secure pack against vibration during motor operation.
We bench-tested the BMS against motor inrush current on a 1/2-inch drill — no false cutoffs at trigger pull; cell voltage sag stayed within normal limits under sustained load.
On first use with this pack, run the tool at half throttle for two cycles before full-power applications — lets the BMS calibrate overcurrent thresholds to your motor's inrush signature.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

40V

Amp

6000mAh

Ryobi 40V Li-ion 6.0Ah Replacement Battery (OP4026A)

This is a 40V 6000mAh lithium-ion replacement battery for the Ryobi 40V tool platform. It fits the RY40210, RY40200, RY40610, RY40600, and over 76 additional Ryobi 40V cordless tools. Voltage is 40V nominal; capacity is 6000mAh (240Wh) as specified in our product data.

  • 40V platform fit — RY40210 and related models: These tools share a common 40V battery rail, connector geometry, and BMS handshake protocol. Any tool in the Ryobi 40V lineup that accepts an OP4026A-type pack will accept this battery without hardware modification.
  • Bench tested on actual hardware: We ran this pack through motor-start inrush events on a circular saw and drill. The BMS held overcurrent thresholds correctly on each trigger pull and did not trip during cold-start events at controlled load.
  • First-use load conditioning: On first use, run the tool at half load for two cycles before applying full torque. This lets the BMS observe the motor's inrush current draw and set accurate overcurrent protection thresholds before you push maximum load.

BMS cutoff on motor-start inrush surge — RY40210 and circular saw use

When a high-draw tool like a circular saw starts under load, the motor draws a current spike that can be three to five times the running current. If the BMS hasn't profiled that inrush pattern yet — especially with a new or recently stored pack — it may read the spike as a fault and cut power. This is not a defective battery. The BMS is doing exactly what it should. Starting the tool unloaded for the first two cycles allows the BMS to record the inrush signature and relax the overcurrent threshold to the correct operating window.

Tool bogs under load or loses torque mid-cut

This symptom usually points to voltage sag rather than a failing cell. High resistance at the battery rail contacts — caused by debris, corrosion, or a worn connector — drops the voltage under load before the cells themselves are depleted. Remove the pack, inspect both the battery and tool terminals for oxidation or carbon buildup, and clean with a dry brush or isopropyl alcohol. If the pack reads above 36V at rest but drops sharply below 32V under load, the contact interface is the first place to check before assuming the cells are at fault.

Compatible Models

RY40210 RY40200 RY40610 RY40600 RY40510 RY40500 RY40410 RY40400 RY40110 RY40100 RY40112 RY40500A RY40220 RY40204 RY40511 RY40002 RY40601 RY40190 RY40190-Y RY40180 RY40180-Y 40V Lithium BRUSHLESS 40-Volt Brushless Lithium-Ion Cordless ElectricLawn Mower 40V Backpack Blower 625 CFM RY40440 40V VAC ATTACK Leaf Mulcher RY40450 RY40460 40V 500 CFM Jet Fan 500 CFM RY40530 40V 14 IN Brushless Chain Saw 40V 20 IN BRUSHLESS RY40201A RY40202 RY40250 RY40402A/ R40402 RY40403 RY40403A RY40411 RY40430 RY40502A RY40601A RY40502 R40402 RBC3600E RBC3626E RBC36X20B RBC36X26B RBL3600 RBL3600J RBL3626 RBL36B RBL36JB RBV36B RCS36 RCS36B RCS36X3550HI RED3600 RED3626 RHT3600 RHT3625 RHT36C5525 RHT36C60R15 RLM3600L RLM3640L RLM36X40H RLM36X40H40 RLM36X40H50 RLM36X46H5P RLM36X46L50HI RLT3600C RLT3625C RLT36B33 RLT36C3325 RLTHTB36 RPP3600 RPP3626 RY40402A

Replaces Part Numbers

OP4026A OP4026 OP4030 OP4015 OP4050 OP4050A BPL3626 BPL3626D BPL3640 BPL3640D BPL3650 BPL3650D OP4040A OP40201 OP40261 OP40301OP4040 OP40401 OP40501 OP40601 OP40602 OP40301 OP4040

Technical Specifications

Voltage40V
Amp Hours6000mAh
Capacity6000mAh
Rate240Wh
Net Weight2020g /71.25 oz
Gross Weight2300g /81.13 oz
Approximate Weight2300g /81.13 oz
Dimension 183.40 x 101.60 x 115.40mm

Product Highlights

  • Brand: Ryobi
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Ryobi RY40210 cuts out the moment I pull the trigger hard — battery seems fine at rest. What's happening?

This is a BMS overcurrent trip triggered by motor-start inrush current. At the instant of a full trigger pull, the motor draws a current spike the BMS reads as a fault, so it shuts the pack down to protect the cells. It's most common with a new pack or one that's been in storage, because the BMS hasn't yet profiled that inrush pattern. Start the tool unloaded two or three times to let the BMS log the inrush signature, then reintroduce full load gradually.

The charger blinks red and won't accept this new pack — it just came out of the box. What do I do?

A pack that's been in storage can drop below the charger's minimum acceptance voltage — typically around 30V for a 40V Li-ion pack. Most Ryobi 40V chargers refuse to begin a charge cycle below that threshold and signal the refusal with a red blink. Leave the pack at room temperature for 30 minutes, then reconnect it to the charger. If it still won't accept, check rail voltage with a multimeter — a reading above 30V means the charger itself may need a firmware reset via a 10-second disconnect from mains.

This battery lasts noticeably less between charges after only a few months of use — what causes that?

Repeated shallow cycling is the most common cause of early capacity fade in Li-ion tool packs. Pulling the battery off the charger at 80% and recharging after only 10–20% discharge conditions the BMS to treat a narrow state-of-charge window as the full range, which compresses usable capacity over time. Run the pack down to the tool's low-voltage cutoff — around 32–33V under load — before recharging, and do this at least once every four to six charge cycles to keep the BMS calibrated to the full cell range.

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