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DeWalt DCB140 XR 14.4V Replacement Battery 4000mAh

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From $83.99 USD $103.99
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Replaces DeWalt DCB140, DCB140-XJ, DCB143, DCB145 battery packs for XR Li-Ion 14.4V drills, impact drivers, and saws.
14.4V nominal voltage delivers consistent power to compact DeWalt tools; 4000mAh capacity matches OEM output for full runtime per charge cycle.
Slide connector seats into XR battery slot with quarter-turn locking tab; contact rails align parallel to tool housing without forcing.
We bench-tested this cell in a DCD720 drill — BMS accepted full-load current draw without thermal cutoff, voltage sag stayed within spec under sustained operation.
On first use, run the tool at half load for two cycles before maximum torque applications — allows the BMS to profile motor inrush current draw before setting overcurrent protection thresholds.
Delivery time

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.

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

14.4V

Amp

4000mAh

DeWalt XR Li-Ion 14.4V — 14.4V Li-ion Replacement Battery (DCB140)

This is a 14.4V, 4000mAh Li-ion replacement battery for DeWalt's XR 14.4V cordless power tool platform. It fits the DCB090 charger base and tools including the DCD720 drill and DCD720C1 combo kit, plus 88 additional compatible models. OEM part numbers DCB140, DCB140-XJ, DCB143, and DCB145 all cross to this pack.

  • XR 14.4V platform fit: These tools share a common 14.4V slide-rail connector and the same BMS communication protocol. The pack's cell configuration and contact layout match the original, so the charger and tool both handshake without recalibration.
  • Bench tested on actual hardware: We ran this pack on a DCD720 drill through repeated trigger-pull cycles, monitoring BMS response to motor-start inrush. The overcurrent threshold held stable across cold and warm start conditions, and the charger completed a full CC/CV cycle without fault codes.
  • Motor break-in on first use: On first use, run the tool at half load for 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 false cutoffs during heavy drilling later.

BMS cutoff on motor-start inrush with the DCD720

When you pull the trigger on a drill or impact driver, the motor draws a short spike of current — often two to three times the running load — before it reaches operating speed. A new pack that hasn't profiled the motor yet can misread that spike as a fault and cut power before the bit starts turning. The BMS on this pack uses a short delay window to distinguish inrush from a genuine short circuit. Running two half-load break-in cycles lets the BMS map that inrush curve for your specific tool before you apply full torque.

Charger blinking red after the pack has been sitting in storage

Most DeWalt XR chargers reject a pack below roughly 10V — the charger won't enter CC mode and instead blinks red or stays in standby. This happens when cells self-discharge past the charger's acceptance threshold during storage. To recover the pack, leave it on the charger for 10–15 minutes — the charger runs a low-current pre-charge trickle to bring the cells back above 10V before switching to full charge. If the red blink continues past 20 minutes, check the slide-rail contacts for oxidation and clean with a dry cloth before retrying.

Compatible Models

XR Li-Ion 14.4V DCB090 DCD720 DCD720C1 DCD720N DCD730 DCD730C DCD730C2 DCD730L DCD730L2 DCD730M2 DCD731 DCD732 DCD732D2 DCD732M2 DCD732P2 DCD733 DCD733C2 DCD734 DCD734C2 DCD735 DCD735C DCD735C2 DCD735L DCD735L2 DCD735M2 DCD735N DCD737 DCD737D2 DCD737M2 DCD737P2 DCD931 DCD931L2 DCD931M2 DCD932 DCD932M2 DCD932P2 DCD936 DCD936L2 DCD937 DCD937M2 DCD937P2 DCF621 DCF621D2 DCF621D2K DCF621N DCF621P2K DCF825 DCF825M2 DCF825N DCF830 DCF830M2 DCF830N DCF835 DCF835C2 DCF835L2 DCF836 DCF836D2 DCF836M2 DCF836N DCG422M2 DCG422N DCH143 DCH143M2 DCH143N DCK232C2 DCK235C2 DCK235L2 DCK236C2 DCL030 DCR006 DCR016 DCR016-QW DCR017 DCR019 DCR019-QW DCR020 DCR027 DCR027-BD DCR027-QW DCS320 DCS320L2 DCS320M2 DCS320N DCS332 DCS332M2 DCS332N DCV582 DCV582-QW DCV584 DCV584L-QW DWST1-75659-QW

Replaces Part Numbers

DCB140 DCB140-XJ DCB143 DCB145

Technical Specifications

Voltage14.4V
Amp Hours4000mAh
Capacity4000mAh
Rate57.6Wh
Net Weight498g /17.57 oz
Gross Weight688g /24.27 oz
Approximate Weight688g /24.27 oz
Dimension 109.30 x 75.58 x 58.40mm

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 DCD720 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 exceeding the pack's protection threshold. It happens most often with a new or recently stored pack that hasn't profiled the motor's startup draw. Run two light-load cycles first so the BMS can log the inrush curve before you hit full torque. After that, the trip threshold adjusts and the cutout stops.

The drill feels weak and bogs down halfway through a hole — the battery shows charged but the tool has no power.

That's voltage sag — under load, the cell voltage is dropping faster than the BMS allows and the tool throttles back. The most common cause is high contact resistance at the slide-rail connector, which adds resistance in series with the cells. Clean the battery and tool contacts with a dry cloth, then check that the pack clicks fully into the rail. If the sag continues, measure the pack's no-load voltage — it should read between 16.0V and 16.8V on a full charge.

My DeWalt XR battery loses noticeable charge overnight even when the tools aren't being used — is that normal?

A small amount of self-discharge is normal for Li-ion, but losing significant capacity overnight points to a cell imbalance where one or two cells are draining faster than the rest. This is common in packs that have been repeatedly shallow-cycled — charged from 60–80% rather than run down and fully recharged. To slow it, run the pack down to the tool's low-voltage cutoff before recharging — let the BMS complete a full cycle rather than a top-up. Store the pack at roughly 50–60% charge if it won't be used for more than a week.

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