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Internet # 315228425

Model # AC840040

Store SKU # 1006083681

18V 4.0 Ah MAX Output Lithium-Ion Battery

$139.00
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  • MAX Output Batteries Provide More Power and More Runtime
  • Compatible with all RIDGID 18V Tools ad Chargers
  • Free Parts and Service for Life with Registration
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Product Details
  • MAX Output Batteries Provide More Power and More Runtime
  • Compatible with all RIDGID 18V Tools ad Chargers
  • Free Parts and Service for Life with Registration
About This Product

RIDGID introduces the AC840040 18V MAX Output 4.0 Ah Lithium-Ion Battery. MAX Output batteries facilitate battery and tool communication unleashing the full potential of any RIDGID 18V Brushless Tool providing more power and more runtime. This battery will provide up to 3X more runtime compared to the 1.5 Ah lithium-ion battery (AC870015). The Advanced Intelligent Electronics in MAX Output batteries enable users to power through the most demanding applications on the jobsite. The RIDGID MAX Output 4.0 Ah battery is compact and lightweight, which reduces user fatigue. As always, this RIDGID MAX Output 4.0 Ah battery is 100% compatible with all RIDGID 18V tools. Best of all, this battery is 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.

  • MAX Output Batteries provide up to 2X more power compared to the 1.5 Ah lithium-ion battery (AC870015)
  • Up to 3X more runtime compared to the 1.5 Ah lithium-ion battery (AC870015)
  • Advanced Intelligent Electronics and innovative cooling technology for extended battery life
  • Compact size reduces user fatigue
  • Fuel gauge displays power level on the job
  • 100% Compatible: Works with all RIDGID 18V Batteries, Tools and Chargers
  • Lifetime Service Agreement with registration within 90 days of purchase
  • Includes: (1) R840040 18V 4.0 Ah MAX Output Lithium-Ion Battery and operator's manual
  • Charger sold separately
  • RIDGID: Build for a Lifetime
  • Click Here to Shop All RIDGID Products






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Product ID #: 315228425Internet #: 648846078335Model #: AC840040

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Specifications

Dimensions: H 2.3 in, W 3.2 in, L 4.7 in

Dimensions

Product Height (in.)2.3 inProduct Length (in.)4.7 in
Product Width (in.)3.2 in

Details

Battery Power TypeLithium IonBattery Voltage (V)18V
Charge time (min.)60Charger IncludedCharger Not Included
Color FamilyBlackNumber of Total Batteries Included1
Power Tool Accessory TypeBatteryPower Tool FeaturesNo Additional Features
RechargeableYesUsed with Equipment TypeUtility
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Questions & Answers

32Questions
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Q:Will a 2Ah Ridgid battery good on a Ridgid Sub Compact saw, just not the longer run time
by|Nov 16, 2023
1 Answer
Answer This Question

A:  Hello, Roro - Thank you for your question. Yes, you could use a 2ah battery on that saw without issue, but you are correct it would not provide the longest runtime. I hope this helps! Additionally, if you need further support, then a RIDGID Customer Experience Professional is here for you, Monday - Friday from 9 am to 6 pm (EST) when you call or text us at 1.866.539.1710 or through email or live chat when you visit us at https://register.ridgidpower.com/contact. And thank you again for your interest in the 18V 4.0 Ah MAX Output Lithium-Ion Battery. - Jesse

by|Dec 17, 2023
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    Q:Why do you only compare this 4 ah battery to the 1.5 ah battery. Why not compare it to your other 4 ah battery? Compare apples to apples and organes to oranges instead of apples to oranges.
    by|Oct 24, 2023
    1 Answer
    Answer This Question

    A:  Hello, Gandalf776 - Thank you for your question. We appreciate your feedback! We are always seeking to improve and adjusting to the demands of our customers using feedback like yours. I hope this helps! Additionally, if you need further support, then a RIDGID Customer Experience Professional is here for you, Monday - Friday from 9 am to 6 pm (EST) when you call or text us at 1.866.539.1710 or through email or live chat when you visit us at https://register.ridgidpower.com/contact. And thank you again for your interest in the 18V 4.0 Ah MAX Output Lithium-Ion Battery. - Jewel

    by|Jan 27, 2024
      2 found this answer helpful
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      Q:What is the correct replacement battery for an older Rigid 18V Drill/Driver R84001?
      by|May 30, 2023
      1 Answer
      Answer This Question

      A:  Hello, Gerry - Thank you for your question. All of our RIDGID 18v batteries will work with that model. I hope this helps! Additionally, if you need further support, then a RIDGID Customer Experience Professional is here for you, Monday - Friday from 9 am to 6 pm (EST) when you call or text us at 1.866.539.1710 or through email or live chat when you visit us at https://register.ridgidpower.com/contact. And thank you again for your interest in the 18V Lithium-Ion MAX Output 4.0 Ah Battery (2-Pack). - Vini

      by|Jul 26, 2023
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        Q:Are the cells 21700 or 18650?
        by|Mar 25, 2023
        2 Answers
        Answer This Question

        A:  I opened on up and it has 18650 in it. 2 parallel x 5 series. Actual capacity of mine was 5.730AH.

        by|Dec 27, 2023
          8 found this answer helpful

          A:  Hello, Brad - Thank you for your question. I'm sorry, this information is not provided. I hope this helps! Additionally, if you need further support, then a RIDGID Customer Experience Professional is here for you, Monday - Friday from 9 am to 6 pm (EST) when you call or text us at 1.866.539.1710 or through email or live chat when you visit us at https://register.ridgidpower.com/contact. And thank you again for your interest in the 18V 4.0 Ah MAX Output Lithium-Ion Battery. - Jewel

          by|Mar 29, 2023
            Showing 1-4 of 32
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            Customer Reviews

            4.8 out of 5
            • 4.8 out of 292 reviews
            • 91% recommend this product
            Filter by:
            Showing 1-10 of 292 reviews
            LIGHTWEIGHT; POWERFUL; LONG RUN-TIME
            LIGHTWEIGHT; POWERFUL; LONG RUN-TIME — The RIDGID 18V Lithium-Ion MAX Output 4.0 Ah Battery (2-Pack) are a significant upgrade from my previous Ridgid battery. They are two times more powerful with three times the run time compared to the previous battery. I was impressed with how lightweight they are for batteries with this much power. When using one of these batteries with my Ridgid angle grinder, the increased power was apparent immediately. With the long runtime, there was not a problem completing the task. If there had been, having two charged batteries would have provided me with an incredible run time. The batteries took about 90 minutes to charge so when one battery runs out, the second battery could be used while the first one is being recharged. I am looking forward to the power and the long run time when using my new Ridgid framing nailer. The batteries are made in China.
            by
            • Recommended
            RIDGID 18V Lithium-Ion MAX Output 4.0 Ah Battery (2-Pack) – I recently got some Ridgid cordless t...
            RIDGID 18V Lithium-Ion MAX Output 4.0 Ah Battery (2-Pack) – I recently got some Ridgid cordless tools and wanted some extra batteries. Of course, I had to buy Ridgid batteries for these tools, but that should be expected. From my experience the performance of Ridgid batteries is comparable to other tool brands. Their cases look and feel well made, they charge pretty quickly with a fast charger and they last about what I expect a 4.0 Ah battery to last in a drill or impact driver regardless of the brand. Ridgid batteries, like other brands include fuel gauges that indicate the power level. The big selling point for Ridgid tools and batteries, after performance, is the Ridgid Lifetime Service Agreement.
            by
            • Recommended
            This 2 pack set of 4.0 ah lithium ion Max output batteries are much more advanced than the older...
            This 2 pack set of 4.0 ah lithium ion Max output batteries are much more advanced than the older line on batteries! Couldn't believe the difference until I tried them. They are compatable with all other 18 volt Ridgid tools and chargers. When I do jobs, either around the house or away, I need batteries that will last! That's why 2 of these are perfect! Highly recommend for DIY or professionals. Check out the features: 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. MAX Output Batteries provide up to 2X more power compared to the 1.5 Ah lithium-ion battery (AC870015) Up to 3X more runtime compared to the 1.5 Ah lithium-ion battery (AC870015) Advanced electronics and innovative cooling technology for extended battery life Compact size reduces user fatigue Fuel gauge displays power level on the job
            by
            • Recommended
            1 found this review helpful
            This batteries are an exact replacement for the batteries that came with my Rigid 18V tools. Whil...
            This batteries are an exact replacement for the batteries that came with my Rigid 18V tools. Whilst cosmetically they are slightly different (please see my video for a description of these differences) they are functionally identical, This is a value pack, and comes with two batteries in a blister pack Four LED indicators read out the charge level when pressed, and display the charging status when they are in the charger. I had some 1/4 inch concrete anchors to place in concrete and these extra batteries meant I could complete the whole job without needed to recharge a battery mid job.
            by
            • Recommended
            1 found this review helpful
            I got these batteries to power my ½” 18v impact wrench. I have several pieces of equipment that r...
            I got these batteries to power my ½” 18v impact wrench. I have several pieces of equipment that require lots of power and torque to remove rusted nuts and bolts. These 4.0 Ah batteries have more power and last much longer than the 2.0 Ah batteries that came with my impact driver. I was changing two sets of 4 wheels / tires out on my trailer, it was very handy having two batteries to swap out, so didn’t have to stop for charging. They can be used with any other 18v tools for this brand, so I am looking to add more tools because of these batteries. Exceptional batteries
            by
            • Recommended
            These batteries are amazing. They fit all the various Ridgid power tools 18-volt types. Some that I previous purchased I have had between 5-10 years and still they charge and work great. These new Ridgid 18V Lithium-Ion Max 4-0 Ah batteries are just additional power for my growing Ridgid power tool collection. What is great addition that I am able to recharge these batteries easily from my solar power farm. My sheds are completely assembled by these rechargeable batteries. I am also using them for many projects and they last and last. Very fast recharging as well. I am very satisfied and looking forward to many more years of service from them. You can also register your purchase of this 2-pack and receive a Lifetime Service Agreement. That is how confident this company is about their batteries. Thank you, Ridgid, and Home Depot, for providing your customers the very best in quality. I love and recommend this 2-pack battery pack. I am sure you will love them too!
            by
            • Recommended
            I regularly use battery power tools by three well known quality tool companies. They all outperfo...
            I regularly use battery power tools by three well known quality tool companies. They all outperform cheap or non-pro quality tools, the kind I had near my workbench and were useless since their batteries wore out in the second year and replacements cost more than the tool. I only buy quality tools now, and if you're thinking about buying these you have decided that Ridgid has given itself an advantage over all the rest by promising free replacement of tool or battery forever. They charge quickly and quietly, are relatively small in size, offer a charge test light, and give the kind of rugged performance you need. The 4 AH is only a bit larger than the 2 AH and saves a lot of time and effort.
            by
            • Recommended
            These Ridgid 4.0 AH batteries have a lot more 'grunt' than their lower-rated siblings. They arriv...
            These Ridgid 4.0 AH batteries have a lot more 'grunt' than their lower-rated siblings. They arrived just in time, I was running into trouble drilling deep holes with a 1" speed bit into a freshly cut hardwood stump. While it's no shock that a 4.0 AH battery outlasts a 2 AH battery, I was pleasantly surprised to find they were much less susceptible to overheating Plug right in to my existing chargers, and are an exact fit to Ridgid 18v tools. Heavier than the smaller batteries, for sure, but that is pretty much a given. They are approximately the same weight as their Milwaukee 4AH 18v cousins.
            by
            • Recommended
            2 found this review helpful
            These Ridgid 18Volt Max Output batteries deliver considerably more power to the tool than the ori...
            These Ridgid 18Volt Max Output batteries deliver considerably more power to the tool than the original 18 volt batteries I got with the tool set. These batteries need to be charged before initial use and I noticed it takes about an hour longer to charge than the original batteries but they last at least twice as long as the originals. If you are doing heavy duty drilling or impact driving, I highly recommend these batteries and as with many Ridgid tools, they have a Lifetime warranty. These are a great addition to my tool collection!
            by
            • Recommended
            I recently got a ‘package deal’ on a set of RIGID tools and was so pleased with them, that I had ...
            I recently got a ‘package deal’ on a set of RIGID tools and was so pleased with them, that I had to get a couple backup batteries to get me through my jobs around the shop. When you are building a work bench that’s held together with a lot of pocket holes, you are drilling a lot of holes at an angle, running in a lot of screws, and running in a lot of lag bolts to hold the casters to the bench. The RIGID tools are excellent and now that I have a pair of 4AH batteries, I can go through the work day using my two tools and don’t have to worry about running low on battery power. The 4AH batteries change easily and hold their charge throughout the day. It’s nice to use two cordless tools all day and not have to change batteries. They performed flawlessly all day long.
            by
            • Recommended
            Showing 1-10 of 292 reviews