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DeWalt DCB606 20V MAX Replacement Battery 4500mAh Li-ion

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From $132.99 USD $163.99
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Fits DeWalt 20V MAX cordless tools; replaces DCB606, DCB612, DCB205, DCB204, DCB206, DCB102, DCB105, and 24 additional OEM part numbers across 60V MAX and 120V MAX platforms.
20V nominal, 4500mAh capacity delivers 90Wh energy output for sustained drill, impact driver, and circular saw operation without voltage sag under load.
Connector slides into DeWalt 20V MAX slot with positive-negative contact alignment; locking tab seats flush with tool housing for secure retention during transport and operation.
We tested the BMS under motor-start inrush on a compact drill — pack held voltage rail steady at trigger pull, with no early cutoff observed during repeated full-torque fastening cycles.
On first use with a circular saw or reciprocating saw, run at half load for two charge cycles before sustained heavy cutting — allows the BMS to profile motor thermal signatures before locking thermal 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.

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

20V

Amp

4500mAh

DeWalt 20V MAX — 20V Li-ion 4500mAh Replacement Battery (DCB606)

This is a 20V Li-ion replacement battery rated at 4500mAh (90Wh) for the DeWalt 20V MAX cordless power tool platform. It fits drills, impact drivers, circular saws, reciprocating saws, and other tools on the 20V MAX rail. It also cross-references with the 60V MAX and 120V MAX FLEXVOLT ecosystem as a 20V-mode pack.

  • 20V MAX platform fit: DeWalt's 20V MAX tools share a common slide-rail connector, BMS handshake protocol, and 5-cell series configuration. This battery matches that architecture across DCB184, DCB205, DCB206, and the broader 20V tool lineup without modification.
  • Bench tested on actual hardware: We ran this pack through a DeWalt DCD996 hammer drill and a DCS575 circular saw. The BMS handled motor-start inrush without tripping, held stable voltage under sustained load, and the charger accepted the pack immediately through a full cycle.
  • Motor inrush conditioning on first use: On first use, run your tool at half load for two cycles before full torque applications. This lets the BMS profile the inrush current draw from your specific motor and set overcurrent thresholds accurately before high-demand cuts or drilling.

BMS cutoff on drill or saw motor-start inrush surge

When you pull the trigger on a high-torque tool, current spikes sharply before the motor reaches speed. On a new or freshly charged pack, the BMS overcurrent threshold may trip during that spike — cutting the tool dead mid-pull. This is a protection response, not a fault. It typically resolves after the BMS has profiled two or three full trigger cycles at moderate load. If cutoffs continue under normal use, check the slide-rail contacts for oxidation — contact resistance amplifies the apparent current spike the BMS sees.

Charger blinking red on a new 20V pack after storage

DeWalt chargers reject packs where cell voltage has dropped below the acceptance threshold — typically around 2.5V per cell. A pack that sat in a warehouse or shipping chain for months can fall below that floor. Insert the pack into a DCB115 or DCB118 charger and watch for the blink pattern — alternating red/green usually means it is attempting a recovery charge. Leave it seated for 30 minutes without interruption. If the charger moves to a solid red fault state, the cells have dropped below 2.0V per cell and will need replacement.

Compatible Models

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

Replaces Part Numbers

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

Technical Specifications

Voltage20V
Amp Hours4500mAh
Capacity4500mAh
Rate90Wh
Net Weight934g /32.95 oz
Gross Weight1124g /39.65 oz
Approximate Weight1124g /39.65 oz
Dimension 121.60 x 82.30 x 89.40mm

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 DeWalt drill cuts out the instant I pull the trigger — new battery, full charge. What's happening?

That's a BMS overcurrent trip caused by motor-start inrush. At the moment of trigger pull, current spikes before the motor reaches speed — and a new pack's BMS sets a tight threshold until it has seen that motor's signature. Run the tool at half load for two cycles and the BMS will adjust its overcurrent limit to match your motor's actual inrush profile. If cutouts continue, clean the slide-rail contacts with isopropyl alcohol — oxidised contacts raise apparent resistance and make the inrush spike look larger to the BMS.

The circular saw runs fine for the first few minutes then bogs and loses power under load. Battery or tool?

That's thermal cutoff from compounding heat — the motor generates heat, the cells generate heat, and in an enclosed housing they reinforce each other. The BMS throttles output voltage to protect the cells once pack temperature exceeds its thermal threshold. Let the pack cool for 10 minutes and check whether full power returns — if it does, the cells are healthy and the heat management is working as intended. For sustained heavy cuts, rotate between two packs to keep each one below the thermal ceiling.

This 4500mAh pack seems to drain much faster than the original — is it capacity fade already?

On a new pack, rapid drain usually points to shallow cycling, not cell degradation. If you have been running the tool in short bursts and recharging before the pack drops below 50%, the BMS capacity estimate drifts out of calibration. Run two full discharge-and-recharge cycles — down to the tool's low-voltage cutoff, then a full charge on the DCB115 or DCB118 — and the BMS will recalibrate its fuel gauge. If drain rate stays abnormally high after recalibration, check rail contact resistance with a multimeter; a reading above 20 milliohms at the connector indicates a contact issue drawing excess resistive load.

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