Rated 4.8 out of 5 by 35
Rated 5.0 out of 5.0 by ToolboyNC Ryobi P150 Fuel Gauge: Great! And then some..
This gizmo works great to check the charge level on batteries which don't have a built-in meter. Handy for checking Li-Ion batteries in-store before purchasing that tool kit on clearance. (If the meter won't come on, don't buy the kit.)
I've also modded a couple of these to make my own new devices. My favorite mod is the USB charger -- drill a small hole in the back, feed through a couple of wires lap soldered onto the battery contacts, and put a 5v regulator with USB socket(s) on the end. Voila, now you have a very powerful USB charger with built-in level meter!
September 2, 2014
Rated 5.0 out of 5.0 by thebeardedlepruchan Simple and easy to use
Great for use on my batteries that do not have a gauge on them. Also works on the ones that do.
Also like the clip for hanging up or clipping to my belt to have handy while using my tools.
August 7, 2013
Rated 5.0 out of 5.0 by WTDC Works great!
I use my Ryobi tools constantly...and it's quite frustrating when the battery dies when I'm at the most critical part of the job...like up on the ladder or clear across the house in the attic. Now I know how much charge I have on my batteries and I can use the battery with adequate power to get through the job.
March 20, 2013
Rated 5.0 out of 5.0 by GaryC Great little tool. Too bad HD has stop selling it.
Great little tool. Too bad HD has stop selling it. The Ryobi web page lists it but their link takes you to the HD web page that says "discontinued". I recommend this tool if you can find it somewhere else.
August 30, 2015
Rated 5.0 out of 5.0 by BruceW Helps monitoring batteries
I have a few older Lithium One+ batteries that haven't got the push-button gauge to check battery level, and this battery fuel gauge works wonderfully to monitor when I need to change out and charge those batteries.
January 6, 2015
Rated 5.0 out of 5.0 by Joefor Great tool, I want another but it's out of stock.
I use this all the time to check battery state of charge.
I would like to see a USB port to charge my phone when there is no power around, "hint"
I want another but no one has...
December 22, 2014
Rated 4.0 out of 5.0 by Smitty Cool product lets you know what he battery charge level is at a glance.
Needed to know the charge level of all my Ryobi batteries as none of mine have the built in gage.
November 22, 2014
Rated 5.0 out of 5.0 by Bartzip Battery Checker
It is a wonder that this item has not come out sooner. For a very inexpensive $9.95 you can easily and readily check your batteries level. This product is so simple to use it is like the garage door opener. What took so long. Actually I put this product along side the TV Remote as some thing that saves time , money, and convenience. I plan to buy another just to have in my car in case I forget mine on any project.I use it to check any Ryobi battery project before I start or allow for charging time as necessary.
March 30, 2009