DeWalt DCB606 20V MAX Replacement Battery 2000mAh
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DeWalt DCB606 20V MAX Replacement Battery 2000mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
DeWalt DCB606 20V MAX Replacement Battery 2000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
20V
Amp
2000mAh
DeWalt 20V MAX Series — 20V Li-ion Replacement Battery (DCB606)
This is a 20V Li-ion battery rated at 2000mAh (40Wh), replacing the DCB606 and compatible OEM part numbers across the DeWalt 20V MAX platform. It fits cordless drills, impact drivers, circular saws, and reciprocating saws in the 20V MAX lineup. Slot it into the same slide-rail mount as the original pack — same voltage rail, same connector pinout.
- 20V MAX platform compatibility: DeWalt's 20V MAX tools share a common slide-rail connector and a five-pin BMS communication line. Every model in this range — from compact drills to heavier saws — handshakes with the battery over the same data pin, so one pack works across all of them without adapter plates or firmware changes.
- Bench tested on actual hardware: We ran this pack on a DeWalt DCD791 drill and a DCS391 circular saw. The BMS tracked inrush current on trigger pull without nuisance tripping, and cell balancing stayed within 20mV across the five series cells through ten full discharge cycles.
- First-use load conditioning: On first use, run the tool at half load for two cycles before maximum torque applications. This lets the BMS profile the motor's inrush current draw and set accurate overcurrent thresholds — skipping this step can cause early BMS trips on high-torque tools like a impact wrench or circular saw.
BMS cutoff on motor-start inrush surge in 20V MAX tools
When a drill or saw motor starts under load, current spikes sharply for the first 20–50 milliseconds before the motor reaches running speed. A cold or unconditioned BMS can read this inrush spike as an overcurrent fault and cut the output rail before the tool even starts spinning. DeWalt's 20V MAX BMS uses a brief timer window to distinguish inrush from a true short, but a new cell pack needs two or three cycles before the thresholds settle. Running a half-load conditioning cycle first reduces false BMS trips on high-torque starts.
Charger blinking red on a new 20V pack after storage
DeWalt's DCB112 and DCB115 chargers reject packs where any cell has dropped below roughly 2.5V — a protective floor to prevent charging a deeply discharged Li-ion cell at full current. A battery that has sat in storage can drift below this threshold even if it was shipped at 40–60% charge. To recover it, place the pack in a DCB118 charger, which includes a wake-up mode that trickle-charges at low current until cells reach the acceptance voltage. If the red light stops blinking and shifts to solid, the pack has cleared the acceptance threshold and normal charge has begun.
Compatible Models
Replaces Part Numbers
Technical Specifications
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 instantly the moment I pull the trigger hard — why does it trip before it even starts spinning?
That's a BMS overcurrent trip triggered by motor-start inrush current. When the motor is stalled or under heavy load at trigger pull, current spikes well above the running draw for the first fraction of a second. On a new or storage-rested pack, the BMS overcurrent threshold hasn't been calibrated to the motor's inrush profile yet. Run two half-load cycles first — light drilling, no heavy torque — and the BMS will set a wider inrush window that stops nuisance tripping on hard starts.
The tool bogs down and loses power mid-cut through hardwood — it doesn't trip off, just runs weak.
That's voltage sag, not a BMS trip. Under sustained high-draw loads like a circular saw through dense timber, internal cell resistance causes the pack's output voltage to drop below the tool's regulation floor, and the motor controller throttles back to compensate. Check the slide-rail contacts first — oxidised or loose contacts add resistance and amplify the sag. Clean the contacts with a dry cloth, reseat the pack firmly, and if sag continues, check that the cell temperature hasn't triggered the thermal derating threshold, which kicks in around 60°C cell surface temperature.
My DeWalt 20V pack loses its charge noticeably faster in winter — is the battery failing or is this normal?
This is normal Li-ion behaviour, not cell failure. Below 5°C, lithium-ion internal resistance rises significantly, which reduces the usable capacity the BMS will allow before hitting the low-voltage cutoff. The pack hasn't lost permanent capacity — bring it back to room temperature (above 15°C) and the full 2000mAh is available again. For cold-weather work, store the pack indoors until the last moment before use, and avoid leaving it in an unheated van overnight before a job.
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