18V Lithium Ion 4-Amp/Hour Pack

AC840087

Features

This tool is backed by a 3-Year Limited Warranty.
Up to 4X more runtime compared to standard lithium-ion batteries
Over 2 X longer life compared to standard lithium-ion batteries
Best-in-class extreme weather performance in temperatures as low as -4° and up to 120°F
Onboard fuel gauge lets you know your battery level before you start a job
Backwards compatible with all RIDGID 18-volt tools and lithium-ion chargers

Specifications

Assembled Depth (in.)	7.00 in
Assembled Height (in.)	7.00 in
Assembled Width (in.)	5.00 in
Battery Type Required	Lithium Ion
Rechargeable	Yes
Voltage (volts)	18

Support Documents

Operator's Manual

18 V LITHIUM-ION BATTERY PACK R840083, R840085, R840086, R840087 Manual (1.56 MB)

Reviews
Q&A

18V Lithium Ion 4-Amp/Hour Pack is rated 2.9 out of 5 by 14.

Rated 4 out of 5 by HandymannGallo from Awesome battery upgrades Great upgrades from the Regular 2.0 Ah batteries that are included on my drill set. last way longer and gives the tool a bit more power.

Date published: 2017-07-03

Rated 5 out of 5 by Sjb774 from Twin battery pack I am also wondering why it is a 3yr warranty instead of a LSA on the twin battery pack I bought .ex

Date published: 2016-12-28

Rated 3 out of 5 by WiscoAndy from Great product so far! Not happy with the warranty coverage. I do not use these tools every day for work but I'm an around the house handy man and I have had no issues with the performance of these batteries or the tools I use. The real reason I wanted to leave a review is because of the warranty.' I bought the Gen5X combo kit last December and it came with a Lifetime Service Agreement(LSA) for every piece included in that kit, which includes the 2 batteries. However, just 3 weeks ago I bought the 2-pack of these batteries and finally got around t0 registering them only to find out that Ridgid doesn't give these batteries an LSA. I don't understand how the batteries in my combo kit are covered under their LSA but the 2 batteries separately are only a 3-year limited warranty. Now to be fair, I haven't had any issues with the batteries, but I'm not looking forward to the day that I do. The lack of an LSA is quite frustrating and doesn't make sense to me. I would love an explanation.

Date published: 2016-12-23

Rated 4 out of 5 by stolidgaze from Durable and affordable It seems that the majority of bad reviews come from those that haven't a clue about batteries nor are they comparing them to other competitors batteries. I have a wide swath of different name brand tools from Makita Dewalt Milwaukee Bosch Porter cable just to name a few. I also have had the opportunity to rip many battery packs apart and see the quality of cells used. These are top tier batteries and with even 15 minutes reading about how to treat lithium ion packs will save much cash and aggravation. Heat destroys batteries and I think that many of these reviews come from those that do not know how to treat their tools and hove no idea of how to store batteries. I have trusted ridgid for years whn it comes to bang for buck and have almost every tool they have produced. I even have the 24 volt line although now I cannot find those battteries which is disappointing....treat your tools and batteries right and you weill see little difference between these and any of the other brands out there. Show me a company that has a warranty as good as ridgid and you can have all my new dewalt junk.

Date published: 2016-03-10

Rated 1 out of 5 by LetdownbyRigid from Horrible batteries, returning whole kit I bought a combo kit one battery was bad , it would fully charge and work , but it glitches after a few minutes and one light would blink on the battery and then you have to put it back on the charger for one second then it reads full power again . I took the battery back and exchanged it but it and the 3rd battery was the same , it's sad the tools seem nice but the batteries are horrible , I hate to take it back ,but I need a kit that works correctly # taking it back to home depot today #glad I still have my receipt

Date published: 2016-02-03

Rated 5 out of 5 by Asatisfiedperson from Excellent product I have used my Ridgid drills for years with no problems. Finally, one of the four batteries that came with the set stopped recharging. I took it to Home Depot. They replaced it on the spot with no questions asked. What more could I want?

Date published: 2015-11-10

Rated 1 out of 5 by mmikezr2 from Poor warranty and quality I work and purchase for a HVAC and PlB contractor we have purchased a couple of dozen Ridged tool kits and have 4 times the failure with the Ridged as apposed to the milwaukee tool kits and the warranty is a joke they do all they can to make it as difficult as possible to get anything warrantied and if the STICKER falls off there is no warranty (yeah they put the serial # on a sticker) I am all done with buying any Ridged battery tools The batteries and chargers fail at an alarming rate. The Ridged batteries are also more susceptible to cold weather failure than the other tools we use as well.

Date published: 2015-08-07

Rated 1 out of 5 by juantamayo from Can't even charge the battery. Just bought a new charger and (2) new 4.0 AH batteries to use on a job tomorrow (circular saw - framing steps) and one battery has been sitting on the charger for over 3 hours and it is still flashing 2 LED's. Luckily I bought a Milwaukee Circular Saw as a back up and I have (2) 4.0 AH batteries that I have for a rotary hammer. Those batteries charge within 70-90 minutes from completely drained to fully charged. If this battery charger doesn't charge these new batterie(s) over night I will return the batteries and the charger and go with Milwaukee. What could be defective? Batteries or Charger?. Will post an update in the next day or two. Will use other ridgid chargers that came with the (2) x4 drills that I own.

Date published: 2015-05-27

18V Lithium Ion 4-Amp/Hour Pack Reviews - page 2

Will this battery work with all rigid 18V Li Ion Tools

Asked by: IWHC2013

yes!

Answered by: stolidgaze

Date published: 2017-09-06

Can batteries bought on their own or in a pack be registered under the LSA?

For example, the new Brushless Gen5X Hammerdrill/Impact Combo kit comes with 2.0A batteries in Home Depot in Canada, where as the site and American Home Depot have the kit with 4.0A batteries. I want 4.oA batteries but want to make sure they're still covered under the lifetime warranty. If I purchase batteries separately and register them in the 90 days, are they qualifying for the warranty?

Asked by: KaiB

No, batteries bought individually have a three year warranty. You may be referring to a different kit setup, I know the kit that included the hammer drill for instance had the 4.0 and the one with the drill and impact had 2.0. The added drain a hammer drill would be subjected to would necessitate a 4.0 battery as would a sawzall or circular saw in wet wood or rip cuts.

Answered by: stolidgaze

Date published: 2017-09-06

Should I Leave the Battery on the Charger or Not?

I'm new to this sort of battery and have read conflicting opinions about how to charge and whether to leave the battery on the charger for storage. Because we have concrete walls, I was given a Ridgid X4 Model R86034, but use it only occasionally around the house. What's the proper way to store the battery?

Asked by: Cathy