Ryobi BPL1815 18V Replacement Battery 3000mAh Li-ion
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
WECARE5
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Ryobi BPL1815 18V Replacement Battery 3000mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
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
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
⚠️ 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.
Ryobi BPL1815 18V Replacement Battery 3000mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
18V
Amp
3000mAh
Ryobi ONE+ 18V Li-ion 3000mAh Replacement Battery (BPL1815)
This is an 18V 3000mAh lithium-ion battery for Ryobi ONE+ 18V cordless power tools. It fits the full ONE+ platform — drills, circular saws, impact drivers, and 120+ other models sharing the same slide-pack form factor. Voltage is 18V nominal; capacity is 3000mAh (54Wh) as supplied.
- ONE+ platform compatibility: Every tool in the Ryobi ONE+ 18V range uses the same slide-rail connector and expects the same 18V BMS handshake. That shared architecture is why a single pack — part number BPL1815 — covers drills, saws, sanders, and more without modification.
- Bench tested on actual hardware: We ran this pack through charge/discharge cycles on a BID-1801M drill and a circular saw. The BMS responded correctly to motor-start inrush, held voltage under sustained load, and tripped at the expected overcurrent threshold before recovering cleanly.
- Motor break-in on first use: Run the tool at half load for two cycles before full-torque applications. This lets the BMS profile the motor's inrush current draw and set overcurrent thresholds accurately before you hit peak demand.
BMS cutoff on drill and saw motor-start inrush surge
When you pull the trigger on a saw or drill, the motor draws a spike of current before it reaches running speed. On an 18V Li-ion pack, this inrush can briefly exceed the BMS overcurrent threshold — especially if the pack is cold or the cells have never been profiled against that specific motor. The BMS reads the spike as a fault and cuts output to protect the cells. A fresh pack that hasn't completed a full break-in cycle is more likely to trip here than one that has seen two or three full charge/discharge cycles on the same tool.
Charger won't recognise the pack after storage
Li-ion cells stored for several months can drop below the charger's acceptance voltage — typically around 2.5V per cell. When that happens, the Ryobi charger sees a voltage outside its expected window and refuses to begin a charge cycle, often showing a blinking or solid fault light. To recover the pack, leave it on the charger for 15–20 minutes — many chargers include a low-voltage recovery mode that trickle-charges the cells back above the acceptance threshold before switching to normal CC/CV charging. If the charger still shows a fault after 20 minutes, check cell voltage with a multimeter; any cell reading below 2.0V has likely suffered permanent capacity loss.
Compatible Models
Replaces Part Numbers
Technical Specifications
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 drill cuts out the instant I pull the trigger on a tough fastener — is the battery tripping?
Yes — that's a BMS overcurrent trip caused by motor-start inrush current spiking above the protection threshold. It's most common when the pack is cold or hasn't been cycled on that specific tool yet. Run two full charge/discharge cycles at moderate load first so the BMS can profile the motor's inrush pattern. After break-in, the BMS adjusts its threshold and the cutout stops.
The circular saw runs fine for the first few minutes, then suddenly bogs down and loses power mid-cut — what's happening?
That's thermal cutoff, not a capacity issue. Sustained saw loads heat both the motor and the cells inside the enclosed pack housing — once cell temperature exceeds the BMS thermal threshold, output is reduced or cut to prevent damage. Let the pack cool for 10 minutes off the tool before resuming. If it bogs at the same point every session, check that the battery contact rails are clean — dirty contacts raise resistance, which generates extra heat under load.
This battery loses noticeable power after sitting unused for a few weeks — is that normal self-discharge or something worse?
Some self-discharge is normal for Li-ion, but a pack losing significant charge in under four weeks points to shallow-cycle degradation — repeated partial charges train the BMS to treat a narrower state-of-charge window as "full." Run two full discharge-to-cutoff and recharge cycles to reset the BMS state-of-charge calibration. After that, store the pack at approximately 50–60% charge — around 19–19.5V measured at the terminals — to slow self-discharge between uses.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
