$149.00 Each
In stock
Adapter lets you use the newer 20V MAX batteries with your older 18V DeWalt tools—includes required charger and 2 batteries!

DeWalt DCA2203C 18V-20V Battery Adapter Kit

Item #
80% of 100
DeWalt DCA2203C 18V-20V Battery Adapter Kit
DeWalt DCA2203C 18V-20V Battery Adapter Kit

DeWalt's line of 18V cordless tools has been enormously popular, but with evolving battery technology, the Ni-Cad 18V platform is being replaced with the lighter, more compact Li-Ion 20V MAX platform. This battery adapter allows owners of the older 18V tools to install and use the new 20V MAX batteries, greatly extending the life of their tools. Because the 20V batteries are so much lighter in weight, the combined weight of the adapter and 20V battery is still less than the weight of the older equivalent 18V battery. Allows for use of 20V MAX* Compact Batteries in most DEWALT 18V Tools Adapter will not fit into DEWALT 18V Chargers—charging requires use of the included DEWALT 20V MAX* charger.

  • Shipping Restrictions: Ground Transportation Only
  • The 20V batteries cannot be charged on 18V chargers, even when mounted to this adapter. To charge the 20V batteries, use the included 20V charger.
  • Do not use the Battery Adapter with Premium Batteries (DCB200, DCB204, DCB204BT, DCB205) in 18V Compact drills DC970, DC759 (use DCB201, DCB203, DCB203BT compact batteries)
With the Rockler Protection Plan, you'll get accidental damage coverage immediately upon purchase of your tool. Plus, we will extend the manufacturer's warranty for your choice of an additional 1 or 2 years. We'll take care of all parts and labor for any repairs, with no deductibles and no hassles. If your tool can not be repaired, we'll gladly replace it. Available in the US only. Click here to learn more. Standard Manufacturer's Warranty: 36 months
(1) 18V to 20V Battery Adapter (DCA1820)
(1) 20V Charger
(2) 20V MAX Compact 2 AH Batteries
More Information
Brand Dewalt
Manufacturer Part Number DCA2203C
Weight 3.6000
Tech Spec No
Technical Documents No
Battery No
4.0 / 5.0
62 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Product
I'm glad this product is available so I don't have to buy new tools. This gives my old 18v tools new life.
August 16, 2018
Woodworking Experience:
Works great and at a great price
February 2, 2018
9 months ago
Great service and experience!
Nice company to deal with, no excuses just get what you want, on time and no extra packaging or bs. Great to see an American company that does it right!
January 30, 2018
9 months ago
Real good idea.
Nice to have this upgrade. It also gave me additional power and runtime.
January 21, 2018
9 months ago
Woodworking Experience:
good adapter
good product
October 6, 2017
over 2 years ago
Woodworking Experience:
Works good, the amps are more than the batter that came with my drill
June 21, 2017
1 year ago
Woodworking Experience:
Everything seems to be fine. Saves alot of money because
I do not have to replace all of my 18volt tools. $50.00
rebate just made the deal better.
May 22, 2017
1 year ago
Woodworking Experience:
Rockler has great deals on DeWalt Products
I have purchased 3 of these kits. I have a full set of 18 volt tools
and they work even better with the 20 volt adapters & 20 volt batteries. Also batteries are handy for my 20 Volt driver & drill when doing larger projects. Extra chargers are great for keeping batteries fresh & ready to work!
May 11, 2017
1 year ago
Woodworking Experience:
I use this adapter today with the 18V skill saw while loading in a show today at the theater. What a difference the 20v battery made in weight, power and use time. My co workers were very impressed, and may have sold a couple. I have the skill saw and saws-all so it was win win when in got this kit. Plus I have the 20 V drill and impact set as well, so it upped me to 4 batteries !! Great deal and product @@
April 22, 2017
1 year ago
Woodworking Experience:
New Lithium batteries
Great that Dewalt included the adaptor. Keeping from having to totally change over to all lithium tools.
December 4, 2016
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 16 answers
Why did you choose this?
Rockler Store
I had an out of date battery system with an old DeWalt cordless drill.
Greg V on Jan 25, 2018
needed it
James Y on Jan 11, 2018
I had an out of date battery system with an old DeWalt cordless drill.
Greg V on Jan 25, 2018
make my saw stronger
Joel P on Jan 12, 2018
needed it
James Y on Jan 11, 2018
It is what I need to fix my DeWalt battery problems
Nicholas H on Jan 10, 2018
to convert to 20 volts
Joseph l on Jan 8, 2018
Patrick C on Jan 3, 2018
My 18v are loosing power. Only one left. Saw I could convert to 20v with an adapter and found it here.
Kim S on Jan 1, 2018
I have all DeWalt
Joh Joe D on Dec 31, 2017
I have 18 volt tools that need a hand up. Some have never or hardly been used. This upgrade will help protect my old purchases.
Rodney L on Dec 31, 2017
Want to keep older 18v tools viable
Mick R on Nov 27, 2017
I have 18 volt tools that I use frequently, but the Ni-cad batteries will not last very long. I purchased a 20 volt drill and driver combo and would like to take advantage of the 20 volt Li-ion batteries in all my tools.
Chris R on Sep 8, 2017
cost effective to keep my old great 18v tools going
Walter s on Jul 17, 2017
To keep using all of the 18volt tools I already have
Donald P on Apr 22, 2017
18V batteries are wearing out
Jim H on Apr 8, 2017
RONALD K on Apr 7, 2017
18v ni-cad batteries have a relatively short life and I can continue to use my cordless tools longer with this upgrade.
Douglas O on Apr 1, 2017
This will extend the life of my 18v tools for not much more than buying replacement inferior heavy old ni-cad types.
RICH T on Apr 1, 2017
This is a good way to upgrade your 18 volt tools
David V on Mar 31, 2017
Nice conversion item and the free $50 Roller gift card
Robert P on Mar 31, 2017
Have a 18v impact driver and need li-ion batteries.
Lil'Red on Mar 31, 2017
Because .
Richard R on Mar 27, 2017
I can now use all of my 18 volt tools which have old batteries that won't hold a charge anymore.
Thomas B on Oct 9, 2016
like it
Donald W on Aug 8, 2016
To update my 18v drill.
Ronald W on Jul 16, 2016
to try switching from 18 Volt to 20 Volt, see if it made a difference in tools working on the job.
Peter on May 28, 2016
To enable me to use my 18Volt tools without buying all 20volt tools.
Charlene L on May 9, 2016
My 18V batteries are need replacing.
Frank R on May 4, 2016
I had been needing new 18 volt batteries & hadn't seen this adapter until I noticed it on your website. I was happy to have the choice to upgrade in this way. Thank you!
Gary W on May 4, 2016
I have many 18volt tools that are still operating and using this rather than 18v ion batteries seems to be a money saver
larry a on May 2, 2016
I have three 18v tools that I can use the 20v batteries on
Scott B on Apr 27, 2016
To replace nicad batteries
Michael C. R on Apr 22, 2016
Needed it
Andreas W on Apr 20, 2016
have a lot of 18volt tools
Michael H on Apr 19, 2016
I wanted the advantages of the 20V battery
Robert B on Apr 13, 2016
LOVE THE 20V system, but I'm not ready to ditch my many 18V tools that are still useful. Those oldbatteries will need replacement before long.
MALINDA S on Apr 6, 2016
I have a 18v system and love it. I do not want to buy all new 20V tools. This allows me to keep my tools and upgrade to 20V system.
Michael P on Apr 4, 2016
18v batteries are dying that came with my tools
JOHN P V on Apr 2, 2016
I wanted it for my 18 volt tools.
JD D on Apr 2, 2016
Replace old batteries with new technology.
Ray M on Mar 25, 2016
My husband is an electrician and uses these tools daily
Amber J on Mar 24, 2016
maybe save buying new tools
Roger M on Mar 11, 2016
New life for my 18 volt tools, ni-cad batteries are not holding up.
Tracy K on Mar 10, 2016
make my saw stronger
Joel P on Jan 12, 2018
It is what I need to fix my DeWalt battery problems
Nicholas H on Jan 10, 2018
Will this battery work with the 18V cordless Reciprocating Saw, or the 6 1/2 saw?
Norman G on Mar 31, 2016
BEST ANSWER: So far the only restrictions Dewalt has identified are with the two drills identified in the "Important Notes" section above.
Can I buy the adapter only?
George H on Apr 2, 2016
BEST ANSWER: Yes. It is DCA1820 and is available on Rockler WEB site.
Will this work as a replacement for a DC9181 battery?
Jimmy G on Apr 8, 2016
BEST ANSWER: Yes, it works in all my 18V tools just fine. Dewalt has identified a couple drive drivers that limit the battery you can use, but the only issue I have heard is making sure the adapter locks securely on the tool.
Will these batteries work in DW990?
Jeff B on Apr 3, 2016
BEST ANSWER: if an 18 volt Dewalt battery fits this will fit.
Will this work with a D 950 hammer drill?
Terry T on Jan 14, 2018
BEST ANSWER: It will work with any older 18V operating system. I’d go ahead and get a larger capacity lithium battery too because the small ones it comes with don’t last long. I use this on a grinder.
Is the input 110v only or will it work with 220volt?
simon B on Oct 7, 2016
BEST ANSWER: It will only work on 110v. I have one really nice you will like it
Will this kit work for any other brands. In particular Bosch? Battery pics look alike
Rick Z on Jan 1, 2018
BEST ANSWER: I don’t believe so. Each battery is specific to the company.
I thought I read some where that you can not use this 20 volt adaptor for any 18 volt nailer. Is this true?
Phillip S on Oct 7, 2016
BEST ANSWER: You are correct. From the instruction sheet: (reformatted for legibility)


The 20V Max* Li-Ion Battery Pack Adapter for 18V NiCd tools is NOT COMPATIBLE with:
18V DeWALT radios
18V DeWALT nailers
DC020 or DC022 Worklights
DCS370 Bandsaw.

For the DC500 Vacuum, the DW074 and DW079 Rotary Lasers,
the adapter is functional but the tools’ battery doors will not fully close.
Is this adaptor compatible with a Ryobi 18 v Li Ion or NiCad battery?
R. Y on Oct 7, 2016
BEST ANSWER: Sorry no, it is compatible only with DeWalt