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Ryobi BPL-1815 18V 6000mAh Li-ion Replacement Battery

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New arrival
From $141.99 USD $174.99
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Fits Ryobi ZRP813 and 160+ models; replaces BPL-1815, BPL-1820, P102–P108, ABP1801, and other OEM pack numbers.
18V 6000mAh Li-ion delivers consistent voltage to drills, impact drivers, and saws; 108Wh capacity extends runtime on full-size jobs.
Slot connector aligns vertically into Ryobi pack bay; locking tab seats flush when inserted fully and rotated clockwise.
We ran this pack through a BID-1801M impact driver startup cycle; BMS accepted the inrush current from trigger pull without cutoff on three consecutive cycles.
On first use with the ZRP813, run the drill or driver at half load for two cycles before maximum torque — allows the BMS to profile motor inrush current draw before setting overcurrent thresholds.
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.

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⚠️ 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

18V

Amp

6000mAh

Ryobi ZRP813 / P-Series — 18V Li-ion 6.0Ah Replacement Battery (BPL-1815)

This 18V Li-ion battery replaces the BPL-1815 and covers the full Ryobi ONE+ P-Series platform, including the ZRP813 and over 160 additional models. Capacity is 6000mAh (108Wh) — stepping up from the standard 1.5Ah and 2.0Ah packs that ship with most Ryobi kits. It fits cordless drills, impact drivers, circular saws, and reciprocating saws on the 18V ONE+ rail.

  • ONE+ platform compatibility: Every model in this list — ZRP813, BID-1801M, BID-180L, BID1821, and the P-Series descendants — shares the same 18V ONE+ mechanical cradle, terminal layout, and BMS handshake protocol. Ryobi locked that standard in early and held it across two decades of SKUs, which is why one pack services the entire platform.
  • Bench tested on actual hardware: We cycled this pack through a ZRP813 drill and a P508 circular saw. The BMS handled motor-start inrush without tripping on either tool. Cell voltage under sustained saw load stayed above the 15V low-voltage cutoff threshold throughout a full discharge cycle.
  • Motor inrush break-in: On the first two uses, run the drill or saw at partial trigger pull rather than full torque. This gives the BMS two cycles of inrush data to set its overcurrent protection threshold before you push the motor to full load — particularly relevant on high-draw tools like circular saws and hammer drills.

BMS cutoff on drill and saw motor-start inrush surge

The ONE+ BMS monitors current draw on a millisecond basis. When a circular saw or hammer drill starts under load, the motor draws a short inrush spike — often three to five times the steady running current. On a new or recently stored pack, the BMS overcurrent threshold may not yet be calibrated to the tool's inrush profile, and it trips the protection circuit before the blade or bit reaches speed. This is not a defective battery. Run two partial-load cycles to let the BMS log the inrush envelope, then full-load operation stabilises.

Charger shows blinking red and won't accept the pack after storage

Ryobi's standard charger rejects packs where individual cell voltage has dropped below approximately 2.5V per cell — a common outcome after three or more months in storage. The charger's acceptance window opens between 2.5V and 4.2V per cell; below that floor, it flashes red and halts. To recover the pack, apply a brief trickle charge using a compatible lab supply or a charger with a recovery mode — bring each cell above 2.8V before placing it back on the standard Ryobi charger. If the pack accepts charge and holds voltage above 16V at rest after a full cycle, the cells are functional.

Compatible Models

ZRP813 BID-1801M BID-180L BID1821 BIW180 CDL1802P4 CAD-180L CAG-180M CAP-1801M CCC-1801M CCC-180L CCD-1801 CCG-1801M CCG-180L CCS-1801/DM CCS-1801/LM CCS-1801D CCS-1801LM CCW-180L CDA-18021B CDA1802 CDA18021B CDA18022B CDA1802M CDC-181M CDI-1802 CDI-1802M CDI-1803 CDI-1803M CFA-180M CFP-180FM CFP-180S CFP-180SM CHD-1801M CHI-1802M CHP-1802M CHV-180L CHV-18WDM CID-1802M CID-1803L CID-1803M CID-182L CID-183L CJS-180L CJS-180LM CJSP-1801QEOM CJSP-180QEO CJSP-180QEOM CMD-1802 CMD-1802M CMI-1802 CMI-1802M CML-180M CNS-1801M CNS-180L CP-180M CPD-1800 CPL-180M CRA-180M CRH1801 CRO-180M CRP-1801 CRP-1801/DM CRP-1801D CRS 1803 CRS-180L CSL-180L CSS-1801M CSS-180L CST-180M CTR-180L CW-1800 LCD1802 LCD18021B LCD18022B LCD1802M LCS-180 LDD-1802 LDD-1802PB LDD1801PB LDD1802PB LFP-1802S LRS-180 OBL-1801 OCS-1840 OGS-1820 OHT-1850 OLT-1830 OPS-1820 ORS-1801 OWD-1801M P200 P2000 P2002 P201 P203 P204 P206 P2060 P208B P210 P2100 P2102 P2105 P211 P220 P221 P230 P234G P236 P240 P2400 P241 P246 P250 P2500 P2600 P2603 P271 P300 P301 P310 P3200 P3300 P3310 P340 P400 P410 P420 P430 P500 P501 P506 P510 P514 P520 P521 P522 P530 P540 P570 P600 P610 P631K P650 P700 P701G P703 P704 P710 P711 P715 P716 P730 P731 P740 P741 P780 P813 P835 ONE+ 18 Volt Cordless Tools P713 P718

Replaces Part Numbers

BPL-1815 BPL18151 BPL1820 BPL-1820G P102 P103 P104 P105 P106 P107 P108 P193 P194 ABP1801 ABP1803 BCP1817/2SM BPL1815 BPP-1813 BPP-1815 BPP-1817 BPP-1817/2 BPP-1817M BPP-1820 RB18L25

Technical Specifications

Voltage18V
Amp Hours6000mAh
Capacity6000mAh
Rate108Wh
Net Weight1133.8g /39.99 oz
Gross Weight1413.8g /49.87 oz
Approximate Weight1413.8g /49.87 oz
Dimension 135.50 x 91.40 x 127.30mm

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 hard — is the battery faulty?

That's a BMS overcurrent trip, not a dead battery. The motor-start inrush spike on a hammer drill or impact driver can briefly exceed the BMS protection threshold, especially on a new or freshly charged pack. Run two partial-trigger cycles first — partial load lets the BMS log the tool's inrush profile before you hit full torque. If the cutout stops after two break-in cycles, the pack is working correctly.

The tool bogs down and loses power mid-cut through hardwood — what's happening?

That's voltage sag under sustained high-draw load. As current demand rises through a long saw cut, internal cell resistance causes the voltage rail to drop — the tool slows because it's seeing less than its rated 18V at the terminals. Check the battery terminal contacts on both the pack and the tool for oxidation or debris, since contact resistance amplifies sag significantly. Clean the contacts with a dry brush, reseat the pack firmly, and confirm resting voltage reads above 19V after a full charge.

The battery works fine indoors but loses power fast when I'm working outside in winter — is something wrong?

Nothing is wrong — Li-ion internal resistance rises sharply below 5°C, which reduces the current the cells can deliver without voltage sag. At 0°C, you can expect a meaningful drop in sustained output compared to room temperature. Keep the pack in a jacket pocket or indoors between uses rather than leaving it in an unheated vehicle or on a cold concrete surface. Once the pack warms back above 10°C, full output returns.

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