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Internet # 315320807

Model # AC87004P

Store SKU # 1006083683

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18V Lithium-Ion 4.0 Ah Battery (2-Pack)

Contains 8 Amp Hour
$179.00
($22.38 /amp hour)
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  • Compact size and lightweight design
  • Compatible with all RIDGID 18V Tools and Chargers
  • Free Parts and Service for Life with Registration
  • View More Details

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Product Details

About This Product

RIDGID introduces the AC87004P 18V 4.0 Ah Lithium-Ion Battery 2-Pack. These 4.0 Ah batteries will provide up to 3X more runtime compared to the 1.5 Ah Lithium-ion battery (AC870015). These 4.0 Ah batteries are 10% more compact and 10% lighter compared to the previous model (AC840087). As always, these 4.0 Ah batteries are 100% compatible with all RIDGID 18V tools. Best of all, these batteries are eligible for the Industry's Only Lifetime Service Agreement, simply register within 90 days of purchase for FREE Parts, FREE Service, For LIFE. Charger sold separately.

Highlights

Product Information

Internet # 315320807

Model # AC87004P

Store SKU # 1006083683

Additional Resources

Shop All RIDGID

Specifications

Dimensions: H 4 in, W 3 in, L 5 in

Dimensions

Product Height (in.)

4 in

Product Length (in.)

5 in

Product Width (in.)

3 in

Details

Battery Power Type

Lithium Ion

Battery Voltage (V)

18V

Charge time (min.)

60

Charger Included

Charger Not Included

Color Family

Black

Individual Battery Weight

1.54 lb

Number of Total Batteries Included

2

Power Tool Accessory Type

Battery

Power Tool Features

No Additional Features

Rechargeable

Yes

Returnable

90-Day

Used with Equipment Type

Jobsite

Questions & Answers

Is it compatible with black and decker chargers
BySep 21, 2026
1 Answer | 
Answer This Question

Hello, Toolgurl - No, these batteries should only be charged in RIDGID 18V chargers. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V Compact Lithium-Ion Battery ( 2-Pack) (AC8400802P).

By|Sep 24, 2026


    can i charge 240v
    BySep 8, 2026
    1 Answer | 
    Answer This Question

    Hello, Leoghazarian - No, this battery should only be charged on a charger plugged into a 120V outlet. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V 4.0 Ah MAX Output EXP Lithium-Ion Battery (AC840041_OLDER).

    By|Sep 12, 2026


      Does this battery come with a charger
      ByAug 25, 2026
      1 Answer | 
      Answer This Question

      Hello, Chase26 - No, a charger is not included. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V 4.0 Ah MAX Output Lithium-Ion Battery (AC840040).

      By|Oct 8, 2026

        (2)

        Will these batteries fit this rnoadio?
        ByAug 11, 2026
        1 Answer | 
        Answer This Question

        Hello, Suzanne - Yes, these batteries will fit the RIDGID 18V radio. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V Lithium-Ion 4.0 Ah Battery (2-Pack) (AC87004P_OLDER).

        By|Aug 12, 2026


          I'd like a straight answer, please, Is this new AC840040 battery tabless or is tabless technology reserved for the EXP line of batteries only. Thank you.
          ByAug 2, 2026
          1 Answer | 
          Answer This Question

          Hello, Eric - Only the MAX Output EXP batteries have tabless cells. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V 4.0 Ah MAX Output Lithium-Ion Battery (AC840040).

          By|Oct 7, 2026

            (4)

            Do it come with a charger
            ByAug 2, 2026
            3 Answers | 
            Answer This Question

            Hello, Ryan - No, a charger is not included. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V 4.0 Ah MAX Output Lithium-Ion Battery (AC840040).

            By|Aug 4, 2026

              A charger IS included.

              By|Aug 17, 2026

                What it is. It is not with charger

                By|Aug 19, 2026


                  HOW DO I REGISTER THE 6AH 4-PACK BATTERY WITH CHARGER? NO MODEL NUMBER. ONLY PER 2-PACK WITH NO CHARGER
                  ByJun 14, 2026
                  1 Answer | 
                  Answer This Question

                  Hello, Carlos - Thank you for the question. If you would, please contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V 6.0 Ah MAX Output Lithium-Ion Batteries (4-Pack) (AC840060PN-AC840060PN).

                  By|Jun 16, 2026


                    Is this compatible with einhell
                    ByJun 13, 2026
                    1 Answer | 
                    Answer This Question

                    Hello, Huyy - No, these batteries are only compatible with RIDGID 18V tools. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.866.539.1710, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://register.ridgidpower.com/contact. This question is from RIDGID 18V Compact Lithium-Ion Battery ( 2-Pack) (AC8400802P).

                    By|Jun 16, 2026


                      Viewing 1-8 of 281

                      Customer Reviews

                      4.7 out of 5

                      • 4.7 out of 3,984 reviews
                      • 87% recommend this product
                      Filter by:
                      Showing 1-10 of 3,984 reviews
                      Great value in the 4 pack, especially on the Daily Deal. I have multiple Ridgid tools and the 6.0 Ah provides more than enough run time.
                      by
                      Best products out there
                      Rigid is the absolute best my 9 year old batteries finally did not and Ridge had just replaced both of them no questions asked It just does not get any better than that They also replaced my impact driver when that wore out Best product out there
                      by
                        • Recommended
                        1 found this review helpful
                        I was having power issues with my Ridgid Circular saw and these batteries are a big help! The saw works much better with these more powerful batteries!
                        by
                        1 found this review helpful
                        This customer chose to rate the product and not provide text.
                        by
                        I was working with the standard 4ah batteries for a few years, upgrading to these 6ah max output are a noticeable improvement for a battery in the exact same casing. I am able to clear the whole back yard with my Ridgid weedwacker on one charge with these. The extra power they give stands out for the saws and palm router is use, And funnily enough they work great with my 20 year old X2 Ridgid saw. These are a great middle ground on weight and power. Only downside I would say is they're complete overkill for drills and drivers. For anyone with the Ridgid Tool Line these are the gold standard for batteries.
                        by
                        1 found this review helpful
                        These are great same size as 4ah good powerful batteries now I have extra batteries for each drill bag along with the Milwaukee impact bits for each kit.Keep an eye out for the daily deals and you can also save some money on these items and don’t forget to register them for free replacement for life LSA can be a pain but it does work for battery packs
                        by
                        The Ridgid 6.0 high output battery is definitely and improvement over the 4.0 high output battery. The size and weight are almost identical as you can see in the pictures ,but there is a significant increase in runtime and power which is especially noticeable when used in the sub compact circular saw or angle grinder!
                        by
                        1 found this review helpful
                        This Ridgid 18V 6.0 Ah Max Output Lithium -lon battery is strong power and lasting longer for use.
                        by
                        I scored these on a good sale a few weeks back. These are nice for a little extra run time then my 4ah batteries while maintaining the same size shell. These get used for my kids power wheels and mostly my saws for that little extra run time.
                        by
                        • Verified Purchase
                        I waited too long to buy this 2 pack. The 8ah is a bit too big for all day and the 4ah sometimes just isn't enough. I get excellent run time out of my leaf blower with the 6ah, and use less than half of a charge in the circular saw cutting rails for a 75ft fence. Highly recommend this along with a 4ah and a 2ah.
                        by
                        Showing 1-10 of 3,984 reviews

                        Compare Key Features

                        current item

                        Product Snapshot

                        Ideal for customers who want 3X more runtime, ensuring reliable power for all RIDGID 18V tools.
                        Built for long-lasting durability and high performance in all RIDGID 18V tools.
                        Built for long-lasting durability and high performance, offering 5X more runtime for demanding jobs.
                        Ideal for customers who want more power and runtime, ensuring peak performance.

                        Voltage

                        18V
                        18V
                        18V
                        18V

                        Capacity

                        4.0 Ah
                        4.0 Ah
                        6.0 Ah
                        4.0 Ah

                        Battery Type

                        Lithium-Ion
                        Lithium Ion
                        Lithium-Ion
                        Lithium-Ion

                        Charging Time

                        60 minutes
                        60 minutes
                        72 minutes
                        60 minutes

                        Run Time

                        3X more than 1.5 Ah battery
                        Up to 3X more
                        Up to 5X more runtime
                        Up to 3X more runtime