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FirstPower

FirstPower 12V 4.0Ah DCB120 Battery Replacement Compatible with Dewalt 12V

  • Based on 1,336 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Saturday, Oct 24
Order within 14 hours and 16 minutes
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Features

  • Battery Features: 12V, Lithium Ion, 4.0Ah. 2Packs. No Memory Effect. Replace 12V Lithium Ion battery model. Powers 12V lithium Ion tools.
  • Compatible with Dewalt 12V Li-ion Tools: REPLACEMENT BATTERY, NOT ORIGINAL. Compatible with Dewalt 12V lithium Ion tools. E.g: DCB120, DCB121 & DCB127. Compatible with12V Max charger: DCB100, DCB101 & DCB119.
  • High Quality & Easy to Install: 4.0Ah capacity XRP battery has 25% more run-time than other 4.0Ah batteries. The same function and size as original 12V lithium Ion battery, so very easy install and it fits perfectly. Not tight or loose.
  • Charge Stable: Top A grade Lithium Battery Cells,Built-in protection against potential damage caused by overcharging, overheating and short-circuit protection. Not hot when charge. Tested by manufacturer to match original & OEM product.
  • Battery Storage: Store it in a clean, dry, cool place away from heat and metal objects.

Description

Replace Battery P/N: DCB120, DCB121 & DCB127. Compatible with 12V Max charger: DCB100, DCB101 & DCB119. 20V 18V 14.4V 12V 9.6V 7.2V Compatible with De-walt Cordless Power Tool 1. FirstPower is top-notch in terms of compatibility, quality, materials, certification, and after-sales service! 2. FirstPower all products aretested by manufacturers to match OEM products, and exported to all over the world. 3. We are committed to meeting all customers' needs. We listen to your suggestions and thank you for your support.

Brand: FirstPower


Color: Black


Product Dimensions: 5"D x 10"W x 5"H


Item Weight: 15.5 ounces


Output Voltage: 12 volts_of_direct_current


Output Voltage: 12 volts_of_direct_current


Input Voltage: 12 volts


Current Rating: 4 A


Amperage: 4 A


Compatible Devices: Remotes


Connector Type Used on Cable: 12V Lithium Ion Battery Connector


Item Dimensions D x W x H: 5"D x 10"W x 5"H


Item Weight: 15.5 ounces


Color: Black


Brand: FirstPower


Mfr Part Number: DCB120


Number of Items: 2


Manufacturer: Shenzhen Jinjunye Electronics Co.,Ltd.


Number of Packs: 2


Item Highlight: MAX Lithium-ion Battery DCB121 DCB127 Max Cordless Tools, 2-Pack


Unit Count: 1 Count


Model Number: DCB120


Warranty Description: 1-YEARS Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great purchase
Definitely was satisfied by this purchase fits perfectly and works.
Reviewed in the United States on May 13, 2026 by Javi Acevedo
    • Last a nice long time.
I bought this to replace my 'authentic Dewalt' battery which was the same age as my first purchase of one of these batteries... the Dewalt died, this one didn't... so I ordered a couple more! Great batteries.
Reviewed in the United States on July 28, 2026 by Charlee L.
    • Great alternative to Original Dewalt battery
Look like good quality, as per instructions charged fully before use, have been using them in my Dewalt light and screw gun with no issues, haven’t had them go low yet to recharge, but a whole lot cheaper than actual Dewalt batteries, extremely fast shipping and very good price, at this point would purchase again! ... show more
Reviewed in the United States on February 16, 2026 by Mike
    • Great quality
Can not beat the value for the price.
Reviewed in the United States on July 14, 2026 by Fay
    • Dewalt tool batteries
These batteries are working very well in my 12v DeWalt tools.
Reviewed in the United States on September 22, 2026 by PhebusWC
    • exact replacement
exact replacements so far, so good
Reviewed in the United States on August 2, 2026 by Brewmaster
    • Deal of the day!
Hold a charge well and replace my Dewalt batteries. Super deal. Got my charger as well.
Reviewed in the United States on March 28, 2026 by Peter D
    • Bad battery
Update - I have changed my star rating from 1 to 4. This seller did refund my purchase due to a faulty battery on their own as I didn’t request one being well past the return deadline. I purchased from them again due to this customer service. I’m well past any return window but the batteries are only a few months old. One of the 2 batteries has quit already and it’s been used maybe a half dozen times. Put it on the charger and it goes right to showing a full charge. With a voltmeter it shows 7 volts and a tool won’t even make a noise. ... show more
Reviewed in the United States on April 22, 2026 by Ed

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