Model#: DEWNDCB612

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Dewalt DCB612 FLEXVOLT 20V/60V MAX 12.0 Ah Battery

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Product Overview


The FLEXVOLT 12.0 Ah Battery provides up to 8X runtime in 20V MAX and delivers ultimate power in 60V MAX and 120V MAX cordless tools. It changes voltage when you go from 20V MAX to 60V MAX tools. Lithium Ion technology delivers performance in the same size as our 9.0 Ah Battery, so it is more powerful in as compact a package as possible. It also includes a built-in LED Fuel Gauge for instant charge status, and is compatible with all 20V MAX tools and chargers.
  • Compatible with 20V MAX, 60V MAX, and 120V MAX tools
  • 12.0 Ah capacity for maximum runtime
  • Compatible with all 20V MAX Chargers
  • 3-LED Fuel Gauge charge indicator
  • Operates in outside temperatures down to 0 degrees Fahrenheit
  • 20V/60V 12.0 Ah Battery - DCB612


Series: FlexVolt
Length: 5.4 in.
Height: 3.8 in.
Weight: 3.2 lbs.
Battery Amp Hours: 12 Ah
Battery Style: Slide
Battery System: 20V/60V
Battery Type: Li-Ion
Compatible Chargers: 20V MAX chargers
Compatible Models: 20V MAX tools
Voltage: 20V



4.9 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (1)
Easy To Use (1)
Ergonomic Design (1)
Powerful (1)
Value (1)
Heavy (1)
Best Uses
Heavy Duty Requirements (1)
Large Projects (1)
Perfect battery for the impact
Great battery for the high torque 899 impact it balances it out and runs it for a long time
April 3, 2019
Good battery
This is. Good battery for the cordless miter saw but dewalt needs to come down on the price ... $250 is way to much for this battery compared to Milwaukee versions for $150
February 6, 2019
Originally posted at
Bad as in GOOD long lasting battery...
I have a saying .If you can't see it you can't fix it.
So the first tool out and the last tool put up is my flashlight.
This puppy will last all week in the flashlight or I can use a pair in my compound miter saw for long lasting 120v power
This review was collected as part of a promotion
January 22, 2019
Originally posted at
Great Battery
I have had this battery for several weeks now and I have used it daily. It has a long life that allows me to complete jobs without having to stop and switch out batteries.
This review was collected as part of a promotion
January 11, 2019
Originally posted at
Is it possible to improve on this
AS always have doubts about any new products. This was my first Flex Volt battery. Now my question is, Why did I wait?. I have mainly used this on a four inch grinder with a cut off blade and have yet had this battery go dead. I seem to give out first. Have also used it on my work light for several hours straight without any indication of having to recharge. I would highly recommend this battery. I am also looking to ad a few additional battery operated tools based on this product.
This review was collected as part of a promotion
January 11, 2019
Originally posted at
Great battery
I got this a couple months ago and I was a little nervous. It's a big battery and getting on my Dewalt impact it's big. But.... it's not has heavy has I anticipated. Its actually not to bad. The battery lasts forever. I help build a deck and I wanted to test the battery. I used it in every tool, circular saw , drill ,impact, if it was a 20v Dewalt we used. 12 hours constant use. Down to 1 line of battery. Didn't lose power once. I will be getting a couple more.
This review was collected as part of a promotion
January 8, 2019
Originally posted at
Not your typical battery!
With the release of the 60v battery my company has been transitioning to “cut the cord”...although I have been leary of trusting only battery’s for fear of not enough run time or power, dewalt 60v batteries have convinced me to make the switch and get rid of all corded tools.
This review was collected as part of a promotion
January 5, 2019
Originally posted at
Works like a charm !
Great product, holds a full charge and let's me get the job done. Plan to purchase a few more just to have the power on demand when I need it on the job site. Like all the DeWalt product built to last and get her done>
This review was collected as part of a promotion
January 4, 2019
Originally posted at
New Dewalt Flex Volt 12 AH Battery
I got the new DeWalt FlexVolt 12 AH 20V Max*/60V Max Battery. After testing it several times, I’m happy to report that it is awesome! The battery has a much longer runtime with a significant increase in power. The power difference was clearly noticeable and it has up to an 8x more runtime compared to other batteries.

This battery definitely made getting the job done much easier and quicker. I didn’t have to recharge the battery or replace it with another one.

The one thing I did notice is that the battery is significantly heavier than the other ones. This is fine for stable tools on a workbench, but it gets a little heavy for mobile tools that are carried for extended periods of time.

Overall, I highly recommend this battery and thought it was great.
This review was collected as part of a promotion
December 27, 2018
Originally posted at
Power for days!
I have been using this on 20v reciprocating saw to cut 45* on 2-3/8" pipe for top rail of fence. Made 5 cuts and used on grinder to clean welds and grounding location during the day and still two out of three lights left on this battery!
This review was collected as part of a promotion
December 27, 2018
Originally posted at

Questions & Answers

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Browse 3 questions Browse 3 questions and 3 answers
What is the amp hour when used on 60v tools? I know its 12amp on 20 volt tools
Tool king on Nov 16, 2018
BEST ANSWER: The amp hour will not change, it will be 12-amp hour for the 60-volt tool.
This may sound like a silly question, but when 2 batteries are used together, does that double the amp/hour rating?
Wade F on Oct 29, 2018
BEST ANSWER: No, it will not double the amp/hour rating.
Can flexvolt 20v - 60v 12.0 be used on dewalt cordless heaters ?
A shopper on Oct 9, 2018
BEST ANSWER: We will need the model number for the heater, to check if the item is compatible. You can also contact the technician directly at DeWalt. The number to reach the technician is 1-800-433-9258