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DeWalt DCB180 18V XR Li-Ion Replacement Battery 4000mAh

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From $76.99 USD $94.99
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Fits DeWalt XR Li-Ion 18V cordless tools; replaces DCB180, DCB181, DCB182, DCB183, DCB184, DCB185, and 26 additional OEM part numbers.
18V nominal, 4000mAh capacity delivers 72Wh — sufficient for drill, impact driver, saw, and sander applications without mid-task battery swaps.
Connector slides straight onto the DeWalt 18V tool mount; locking tab seats flush with a firm click; no polarity reversal possible on this platform.
We ran discharge cycles on DCD740B drill and thermal load test on circular saw; BMS held stable at 16.8V peak charge and triggered cutoff cleanly at 15V under sustained motor load.
On first trigger pull with this pack, the BMS may cut out if motor inrush current spikes above the protection threshold — run the drill at half throttle for two cycles to let the BMS profile your motor's startup draw before full-power operation.
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This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

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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.

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🔹 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

4000mAh

DeWalt XR Li-Ion 18V — 18V Li-ion Replacement Battery (DCB180)

This 18V 4000mAh Li-ion battery replaces the DCB180 and fits the full DeWalt 18V XR cordless platform — drills, impact drivers, circular saws, reciprocating saws, and sanders. It runs at 18V nominal with a 72Wh energy rating and uses the same slide-rail connector and BMS communication protocol as the original pack. Compatible across a wide range of DeWalt 18V XR tools including the DCD740, DCD780, and over 186 additional models.

  • XR 18V platform fit: DeWalt's 18V XR tools use a shared battery rail with a three-pin BMS handshake. Any tool in this family that reads pack temperature and state-of-charge over that data line will recognise this battery. The voltage rail, connector pitch, and latch geometry match the original DCB180 spec.
  • Bench tested on actual hardware: We cycled this pack on a DCD780 drill and a DCS391 circular saw. The BMS held the overcurrent threshold correctly on motor start, regulated cell temperature across sustained cuts, and balanced the cells within two full charge-discharge cycles.
  • First two cycles on high-draw tools: Run the tool at half load for the first two cycles before full-torque applications. This lets the BMS log the motor's inrush current signature and set its overcurrent trip threshold accurately — preventing nuisance cutoffs on demanding tools like circular saws and angle grinders.

BMS cutoff on motor-start inrush surge

When you pull the trigger on a DeWalt 18V saw or drill, the motor draws a spike of current that can be three to five times the running load. A freshly installed or storage-depleted battery has not yet profiled that inrush, so the BMS may trip the overcurrent protection and cut the tool out instantly. This is not a faulty battery — it is the protection circuit reacting to an unrecognised spike. Run two partial-load cycles first, and the BMS will calibrate its threshold to the actual motor draw on your specific tool.

Charger blinking red on a new or stored pack

DeWalt chargers (DCB112, DCB115, DCB118) reject packs where any cell has dropped below roughly 2.5V per cell — a common result of long storage. The charger blinks red and refuses to start a charge cycle because the pack voltage sits outside its acceptance window. Some DeWalt chargers include a recovery mode: hold the battery on the charger for 30 minutes with the blinking red light showing, and the charger will attempt a slow trickle to bring cells back above the acceptance threshold. If the light stays red past 30 minutes, check each cell group with a multimeter — any cell group reading below 2.0V will not recover.

Compatible Models

XR Li-Ion 18V DCD740 DCD740B DCD780 DCD780B DCD780C2 DCD780L2 DCD785C2 DCD785L2 DCD980L2 DCD985B DCD985L2 DCF880C1-JP DCF883B DCF883L2 DCF885 DCF885B DCF885C2 DCF885L2 DCF895B DCF895C2 DCF895L2 DCG412 DCG412B DCG412L2 DCS331B DCS331L1 DCS331L2 DCS331N DCS380B DCS380L1 DCS381 DCS391B DCS391L1 DCS393 CL3.C18S DCD771 DCD776 DCD785 DCD790 DCD790D2 DCD795 DCD980M2 DCD985 DCD985M2 DCD995 DCF620 DCF880 DCF880HL2 DCF880HM2 DCF880L2 DCF880M2 DCF883M2 DCF885M2 DCF886 DCF886D2 DCF886M2 DCF889 DCF889HL2 DCF889HM2 DCF889L2 DCF889M2 DCF895 DCF895D2 DCF895M2 DCF899 DCG412M2 DCH213 DCH253 DCH273 DCL040 DCN690 DCR006 DCS331 DCS331M1 DCS355 DCS373M2 DCS380 DCS380M1 DCS391 DCS391M1 120V MAX 12V MAX Li-ion 20V MAX 60V MAX DCB184 DCB184-XJ DCB184-XR DCD700 DCD710 DCD710D2-QW DCD710N DCD710S2 DCD780N DCE0811 DCE0811D1G-QW DCE0811D1R-QW DCE0811LR-XJ DCE0811NR-XJ DCE0825 DCE0825D1G-QW DCE085D1G-QW DCE088 DCE088D1G-QW DCE088D1R-QW DCE088LR-XJ DCE089 DCE089D1G-QW DCE089D1R-QW DCF610 DCF610D2-QW DCF610S2 DCF805 DCF813 DCF813N DCF813S2 DCF815 DCF815D2-QW DCF815N DCF815S2 DCF885N DCHJ060 DCHJ060B DCHJ060C1 DCHJ061 DCHJ061B DCHJ061C1 DCHJ062 DCHJ062B DCHJ062C1 DCHJ063 DCHJ063B DCHJ063C1 DCHJ064 DCHJ064B DCHJ065 DCHJ065B DCHJ065C1 DCHJ066 DCHJ066C1 DCHJ067 DCHJ067B DCHJ068 DCHJ068B DCHJ069 DCHJ069C1 DCHJ070 DCHJ070B DCHJ070C1 DCHJ071 DCHJ071B DCK210S2 DCK211D2T-QW DCK211S2 DCK212S2 DCK413S2 DCL510 DCL510N DCL510N-XJ DCR015 DCR016 DCR016-QW DCR018 DCR019 DCR019-QW DCR027 DCR027-BD DCR027-QW DCS310 DCS310B DCS310D2-QW DCS310N DCS310S1 DCS310S2 DCT410 DCT410D1-QW DCT410N DCT410S1 DCT411 DCT411S1 DCT412 DCT412S1 DCT414 DCT414N DCT414S1 DCT416 DCT416S1 DCT418 DCT419 DWST1-75659-QW

Replaces Part Numbers

DCB180 DCB181 DCB181-XJ DCB200 DCB201 DCB201-2 DCB182 DCB183 DCB185 DCB203 DCB204 DCB182-XE DCB184 DCB205 DCB206 DCB102 DCB105 DCB112 DCB120 DCB606 DCB606-2 DCB609-2 DCB612 DCB121 DCB123 DCB125 DCB127 DCB107 DCB115 DCB118

Technical Specifications

Voltage18V
Amp Hours4000mAh
Capacity4000mAh
Rate72Wh
Net Weight282g /9.95 oz
Gross Weight472g /16.65 oz
Approximate Weight472g /16.65 oz
Dimension 117.26 x 76.15 x 64.80mm

Product Highlights

  • Brand: DeWalt
  • 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 DeWalt drill cuts out the instant I pull the trigger on a tough bit — is the battery dead?

This is a BMS overcurrent trip, not a dead battery. The protection circuit fires when the motor's start-up inrush current exceeds the threshold the BMS has stored. It happens most often with a new or recently swapped pack that hasn't yet logged your tool's inrush signature. Run two cycles at half load — drilling into softwood before hardwood — and the trip threshold will calibrate to your motor's actual draw.

The battery gets hot and the tool bogs down after ten minutes of continuous circular saw use — what's happening?

Sustained circular saw load generates heat in both the motor windings and the battery cells simultaneously. Once cell temperature hits the BMS thermal cutoff point (typically around 60°C), the pack throttles output voltage to protect the cells — that's the bogging you feel. Pull the battery and let it cool for five minutes until the housing feels warm rather than hot to the touch. To reduce recurrence, avoid holding full-throttle cuts for more than 30 seconds without a brief pause; the enclosed battery housing traps heat faster than open-air tools like drills.

The tool runs but feels weak and loses power under load even though the battery shows charged — what's causing that?

Voltage sag under load points to high contact resistance at the battery rail or early capacity fade from shallow cycling. Start at the rail: clean the battery slide contacts and tool terminal with isopropyl alcohol and a dry brush — oxidation on those contacts adds resistance and drops the voltage the tool actually sees. If cleaning doesn't fix it, the cells may have degraded from repeated partial charges without full discharge cycles; Li-ion cells lose usable capacity when cycled in a narrow 50–80% band continuously. Confirm the battery is reaching 20.0V at full charge with a multimeter across the positive and negative terminals before ruling out the pack itself.

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