Search  for anything...
FirstPower

FirstPower 12V 2.0Ah DCB120 Battery Replacement - Compatible with Dewalt 12V Lithium Ion Max Power Tools DCB120 DCB121 DCB127-2Packs Real Capacity

  • Based on 1,328 reviews
Condition: New
Checking for the best price...
$29.99 Why this price?
Save $9.98 was $39.97

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Aug 1
Order within 4 hours and 11 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Battery Features: 12V, Lithium Ion, REAL 2.0Ah. 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: REAL 2.0Ah 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


Item Weight: 15.5 Ounces


Output Voltage: 12 Volts (DC)


Input Voltage: 12 Volts


Output Voltage: 12 Volts (DC)


Input Voltage: 12 Volts


Current Rating: 2 Amps


Amperage: 2 Amps


Compatible Devices: Remotes


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


Item Weight: 15.5 Ounces


Color: Black


Brand: FirstPower


Mfr Part Number: DCB120


Manufacturer: Shenzhen Jinjunye Electronics Co.,Ltd.


Model Number: DCB120


Unit Count: 1 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 1

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.

Similar Products

Top Amazon Reviews

    • 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
    • Great purchase
Definitely was satisfied by this purchase fits perfectly and works.
Reviewed in the United States on May 13, 2026 by Javi Acevedo
    • 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
    • Smoking deal!!
I love my small 12 volt DeWalts, they have really taken a beating and still work great. Shocking how much replacement batteries cost though, huh? These are, near as I can tell really 4 amp batteries. Let me put it this way, I ran my car starter motor with them. Yes, the 6 awg wires caught fire, and yeah it was exciting, but the battery didn't heat up, and it was just starting to lose power as the fire broke out. I tried to use a fat resistor, but that nearly set tge bench on fire. After clamping the resistor to a big piece of aluminum as a heat sink, the battery voltage refused to drop and I popped the resistor. DeWalt wants $50 for one 1200mAh battery, I got 2 4000mAh batteries, for half that. Excellent value! In actual use and not shenanigans, I have yet to run one down.. ... show more
Reviewed in the United States on March 1, 2020 by Black Peter
    • Good product.
Batteries fit perfectly and have performed really well so far.
Reviewed in the United States on June 30, 2025 by Amazon Customer
    • Great replacement option!
As good as factory at a fraction of the price.
Reviewed in the United States on March 10, 2026 by Jeremiah B.
    • Gives an old tool new life!
These are excellent replacements for my original batteries that have come to the end of their life. Out of four only one had any power left and they are at least 10 years old. Thought that name brand batteries should last longer but can't complain. These give an extra amp/hr of power which is really nice and the price is great. Out of the box I'm very satisfied. ... show more
Reviewed in the United States on July 26, 2025 by Ron4Peace
    • 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

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...