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DeWalt DCB120 12V MAX Li-ion Replacement Battery 2000mAh

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From $41.99 USD $51.99
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Fits DeWalt 12V MAX Li-ion tools including DCB120, DCB121, DCB125, and 25+ OEM part numbers across DCD710, DCF610, and 186+ compatible models.
12V nominal voltage, 2000mAh capacity delivers consistent power for compact drills, drivers, and impact wrenches in the 12V MAX lineup.
Connector seats flush into DeWalt's slide-mount housing with positive lock tab; remove by pressing release button on tool body.
We ran charge cycles on a DCD710 drill — BMS accepted input voltage cleanly, no fault codes, and responded to motor inrush without nuisance cutoff.
On first use with a new DCD710, run the tool at half trigger for two cycles before applying full torque — allows the BMS to profile motor start current before locking overcurrent thresholds.
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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

12V

Amp

2000mAh

DeWalt 12V MAX Li-ion — 12V Replacement Battery (DCB120)

This is a 12V Li-ion replacement battery rated at 2000mAh (24Wh). It fits the DeWalt 12V MAX cordless platform, including compact drills, drivers, and impact tools such as the DCD710 and DCF610 series. Slot it into the existing charger dock — the connector and BMS communication protocol match the original pack.

  • 12V MAX platform fit: The DCD710, DCF610, and the broader 12V MAX lineup share the same slide-rail connector, voltage rail, and BMS handshake protocol. One pack moves between tools without adapters or firmware changes.
  • Bench tested on actual hardware: We ran this pack through a DCD710 drill under repeated motor-start cycles. The BMS handled inrush current without tripping, and cell voltage held steady across the discharge curve.
  • Motor break-in on first use: Run the tool at half load for two cycles before pushing maximum torque. This lets the BMS log the motor's inrush current signature and set overcurrent thresholds accurately before full-load work begins.

BMS cutoff on trigger-pull inrush in the DCD710 and DCF610

The 12V MAX BMS sets an overcurrent trip point based on the first few discharge events it logs. If the pack goes straight into a high-torque application cold, the inrush spike from a stalled or heavily loaded motor can exceed that threshold and shut the pack down instantly. This is not a faulty battery — it is the protection circuit doing its job with incomplete motor data. Two half-load warm-up cycles give the BMS enough current history to tolerate the full motor-start spike without nuisance tripping.

Charger blinks red and won't accept the pack after storage

DeWalt DCB10x series chargers reject packs whose cell voltage has dropped below roughly 2.5V per cell from extended storage — the charger sees that reading as a damaged pack and refuses to begin a charge cycle. Pull the pack out, wait 30 seconds, and reinsert it three times in quick succession; on some charger firmware this forces a recovery pre-charge at low current. If the charger still blinks red after that, check each cell group with a multimeter — any cell reading below 2.0V will need the pack replaced, not recovered.

Compatible Models

12V MAX Li-ion DCD710 DCD710S2 DCF610 DCF610S2 DCF813S2 DCF815 DCF815N DCF815S2 DCK210S2 DCK211S2 DCL040 DCL510 DCS310 DCS310S1 DCT410S1 DCT411S1 DCT414S1 DCD700 DCF805 DCF813 DCR006 DCT412 DCT414 DCT416 DCT418 DCT419 DCD710D2-QW DCD710N 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 DCF610D2-QW DCF813N DCF815D2-QW 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 DCK211D2T-QW DCK212S2 DCK413S2 DCL510N DCL510N-XJ DCR015 DCR016 DCR016-QW DCR018 DCR019 DCR019-QW DCR027 DCR027-BD DCR027-QW DCS310B DCS310D2-QW DCS310N DCS310S2 DCT410 DCT410D1-QW DCT410N DCT411 DCT412S1 DCT414N DCT416S1 DWST1-75659-QW 120V MAX 20V MAX 60V MAX CL3.C18S DCB184 DCB184-XJ DCB184-XR DCD740 DCD740B DCD771 DCD776 DCD780 DCD780B DCD780C2 DCD780L2 DCD780N DCD785 DCD785C2 DCD785L2 DCD790 DCD790D2 DCD795 DCD980L2 DCD980M2 DCD985 DCD985B DCD985L2 DCD985M2 DCD995 DCF620 DCF880 DCF880C1-JP DCF880HL2 DCF880HM2 DCF880L2 DCF880M2 DCF883B DCF883L2 DCF883M2 DCF885 DCF885B DCF885C2 DCF885L2 DCF885M2 DCF885N DCF886 DCF886D2 DCF886M2 DCF889 DCF889HL2 DCF889HM2 DCF889L2 DCF889M2 DCF895 DCF895B DCF895C2 DCF895D2 DCF895L2 DCF895M2 DCF899 DCG412 DCG412B DCG412L2 DCG412M2 DCH213 DCH253 DCH273 DCN690 DCS331 DCS331B DCS331L1 DCS331L2 DCS331M1 DCS331N DCS355 DCS373M2 DCS380 DCS380B DCS380L1 DCS380M1 DCS381 DCS391 DCS391B DCS391L1 DCS391M1 DCS393 XR Li-Ion 18V

Replaces Part Numbers

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

Technical Specifications

Voltage12V
Amp Hours2000mAh
Capacity2000mAh
Rate24Wh
Net Weight205.5g /7.25 oz
Gross Weight275.5g /9.72 oz
Approximate Weight275.5g /9.72 oz
Dimension 90.75 x 64.45 x 45.30mm

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 DCD710 cuts out the instant I pull the trigger hard — battery looks fine on the charger. What's happening?

That's a BMS overcurrent trip caused by motor-start inrush, not a dead battery. The 12V MAX BMS shuts the pack down in milliseconds when the current spike from a stalled or heavy-load start exceeds its trip threshold. It resets itself — remove the pack, wait 10 seconds, reinsert, and try again at lighter load. Run two half-load cycles first so the BMS can profile the motor's inrush before you go full torque.

The drill runs fine at first but bogs down and feels weak after a few minutes of sustained use. Fully charged pack, no error lights.

Voltage sag under sustained load is the likely cause — cell internal resistance rises as the pack heats up inside the enclosed housing, and the voltage rail drops enough for the motor to lose torque. Check the slide-rail contacts on both the pack and the tool for carbon buildup or corrosion; even a thin film of debris adds resistance and makes sag worse. Clean the contacts with isopropyl alcohol on a cotton swab, let them dry fully, then retest. If sag still occurs within two minutes of load, the cells are fatigued and the pack needs replacing.

This battery drains noticeably faster than it used to, even though I only use it for short jobs and always put it back on the charger right after. What's causing that?

Repeated shallow cycling — pulling a small amount of capacity and immediately recharging — degrades Li-ion cells faster than full discharge cycles. The charger tops the pack up to 100% every time, which keeps the cells at high state-of-charge stress for longer. Let the pack run down to roughly 20–30% before recharging, and do one full discharge-to-charge cycle every 10–15 uses to keep the BMS capacity calibration accurate. Capacity won't recover once the cells have degraded, but changing the charge habit will slow further loss on a new pack.

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