18V ONE+™ Dual Chemistry In-Vehicle Charger

Model: #P131

4.9 | 67 Reviews
This convenient in-vehicle charger will charge all past and current Ryobi® 18V ONE+™ batteries. Can plug into vehicle's 12V DC outlet, giving you the flexibility to charge batteries while driving or when access to power is limited. The protective circuitry audibly warns you, and shuts down the charger, if your vehicle's battery is too low. ChargePlus™ technology gives battery and charging status using LED's.


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This product is covered by a 3-year limited warranty.

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  • Voltage Compatibility: 18V (See manual for other voltages)
  • Cord: 3 ft.
  • Net Weight: 1.9 lbs.


  • P131 In-Vehicle Charger
  • Operator's Manual
  • * Battery Sold Separately


18V ONE+™ Dual Chemistry In-Vehicle Charger
18V ONE+™ Dual Chemistry In-Vehicle Charger is rated 4.9 out of 5 by 66.
Rated 5 out of 5 by from Works well and doesn't drain my truck's battery I'm on my second one of these. The first one worked well until my wife ran over it while I was cleaning out my work truck. Apparently Ryobi green looks like ashpalt to her? Anyway Both chargers spent hundreds of thousands of miles rattling around in a work van while working continuously. You can leave them plugged in for a week or more without overly draining your truck battery. I use my tools a lot and have at least 10 batteries on my truck at all times. This helps me keep fresh ones ready even when I'm miles from the nearest outlet.
Date published: 2018-08-02
Rated 5 out of 5 by from Great for travel I bought the charger a couple of weeks ago and have a battery charging most of the time. Thought this to be very useful while on the road in the event of a flat or low tire. I carry my ryobi inflator and impact with me all the time in case of such an event. Also for use with my ryobi fan that I carry to outdoor events in the hot Texas heat as well as my ryobi radio.
Date published: 2019-06-22
Rated 4 out of 5 by from Awesome products! I recently started switching over to using Ryobi products. I am impressed with the quality and think the one plus system is a phenomenal idea and great system. I use the tools and some of the other products for outdoor work and camping. The one battery for all makes everything easier. The new charger/inverter for the batteries is a home run. Keep up the great work and new ideas Ryobi! Steve
Date published: 2019-06-10
Rated 5 out of 5 by from Works Great! The 2 times I have used this charger it has worked very well charging 4ah batteries. Close to charge time with AC charger.
Date published: 2019-09-16
Rated 5 out of 5 by from Easily stored & an added to our camping supplies We bought this for our camping trips to charge our 18v 1Plus batteries while driving. It is easily stored, fits nicely in the rear cutout that's near the 12VDC socket of our RAV4 hybrid, & charges quickly (dependant on the battery size & state of discharge of course). Definately a must have for anyone on the go who uses the One+ system.
Date published: 2019-07-26
Rated 5 out of 5 by from Good When There is No A.C. Power Over time, I have accumulated an assortment of 18V and 40V batteries to go with my RYOBI yard tools. The addition of a few RYOBI power generators (inverters) and a RYOBI camping lantern lets my RYOBI batteries provide lighting and a few creature comforts during power outages. My latest purchase is this in-vehicle charger. It allows me to recharge my 18V batteries using the cigarette lighter (electrical port) in my car so I can continue using those batteries if the outage is extended. To test this in-vehicle charger, I charged a new 18V, 3 Ah battery in my car under the conditions I would expect in a power outage. The unit performed as expected. The only trick was I needed my car to be turned "on" in order for the electrical port to supply power. Also, if I did not keep the fob in the car, my car would shut off after a short while. So I can either make multiple trips to restart the car, or just keep the fob in the car while the battery charges.
Date published: 2020-06-11
Rated 5 out of 5 by from Just as good as the 110v rapid charger Bought this for a week long trip to the Nevada desert to camp . I have a few different 18v lights and A fan. I used the 12v car charger to keep all my batteries up while traveling to different hikes and such. Charger worked great and was just as fast charging batteries as the 110 plug in rapid charger. I could charge the 3amp batteries in a little over an hour and the 4amp batteries in less than 2 hours. Works better than expected. Would highly recommend if vehicle power is the only option for charging
Date published: 2020-10-06
Rated 5 out of 5 by from 12V vehicle dual battery charget I own 200 acres in hills 45 miles from town. I use this to charge my batteries for my tools when I don’t have my generator running. This works great and does the job well. I charge driving to my cabin and I am ready to get the job done! Great product!
Date published: 2020-11-09
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