I only tested at 5V but it put out 3A for the life of the battery! the quality of the 3D print was decent, a bit warped but totally functional the design is pretty good, could probably be more compact, but I really wish the USB jack had some more protection, it might get damaged in my tool-bag. I've looked at all the options on the web and this is the best. an excellent addition to the huge variety of ryobi 18v tools! FYI I also use my ryobi batteries to run LED lighting projects for festivals and other things with a 10A 12v adapter I made, and have been dreaming of an e-bike build :) thanks for making this! PS there was no documentation and no communication needed for my order, but I could not leave those ratings blank or N/A (fix it tindie!) so I put 5 stars.
This is egg-zactly what I have wanted to do since I got these batteries. When you have 19 volts of heavy duty battery at your disposal, it only makes sense to put it to other uses. Version 2.0 needs to support a 120 volt AC jack, ;) !
This is just what I needed. I'd hacked one of the USB adapters - mostly because I needed the physical contraption to mount things in - but it drains the battery over time.
The *only* thing I'd add is a 12v connector - the battery has both the 20v and a 12v set of pins on it. For my general use case, 20v was what I was looking for, but every now and then, the 12v would be nice too. (not complaining though!)
Product OK, but order processing is slow..... there was a mistake made in shipping but they corrected it. However, by doing so, quite a delay time in processing...... I understand, everyone makes mistakes. Just wish they were more efficient on processing and shipping...........