Ryobi Tek4 4-Volt Portable Power Source RP4900-DISCONTINUED-RP4900 - The Home Depot


Model # RP4900

Internet # 100671267

Tek4 4-Volt Portable Power Source RP4900-DISCONTINUED

Ryobi Tek4 4-Volt Portable Power Source RP4900-DISCONTINUED

This item has been discontinued.
The Home Depot no longer carries this specific product.

$24.97 / each


Model # RP4900

Internet # 100671267

The Ryobi Tek4 4-Volt Portable Power Source is an ideal tool for those who need immediate backup charge for their electronics. It is weather resistant for outdoor environments and comes with multiple adapters for compatibility with smart phones and a wide variety of other devices.

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Assembled Depth (in.)  4.08 in  Assembled Height (in.)  9 in 
Assembled Width (in.)  2.2 in 
Color Family  Black  Hazardous Code 
Power Tool Accessory Type  Battery  Power Tool Product Type  Power Tool Accessory 
Rechargeable  Yes  Returnable  90-Day 
Tools Product Type  Power Tool  Voltage (volts) 


Rated 4 out of 5 by 24 reviewers.
Rated 3 out of 5 by pretty good i like it, i use it. i have an iphone which i use the usb extension to plug in my regular phone charger. it mostly does not charge my phone up to 100%, i think it has once, but usually levels out at about 80%, which is better than 0% of coarse. i do really like the design, and look and the battery. i feel like im saving AA batteries.. very green. good to have always tucked away in the car, but i left the battery inside the device once and it drained itself of juice, i dont know why. but from now on i keep a battery and charger seperated in my glove box. January 21, 2010
Rated 2 out of 5 Thoughtless design. Why on earth would you put an outdated micro USB for the output on the device? it should have been a regular full sized USB output so you could plug any device's USB cable into it to charge. Yes, they included an adapter to go from Micro to standard usb, but mine lasted about a week before it got bent from sticking out and stopped working. Also, it would have been nice if it could output 5V at 1A instead of 500ma, since thats pretty much the standard now. Some inteligent redesign, and this could be a 5 star device. Holding Two tek4 cells instead of one might be an idea. July 30, 2012
Rated 4 out of 5 by This product works well for rechargeable power. This products recharges fast, but the USB plug adapter is built cheaply. I have had to replace piece twice and it's cheaper to buy a new charger. Save your receipt unit does have a two year warrenty. August 7, 2012
Rated 5 out of 5 by Tek4 Products I bought several tek4 flashlights, power supplies and batteries and am very pleased with the product. The power supply charges my motorola RAZR faster than any other charger method (car or wall charger). It takes one tek4 battery charge to equal one fully charged RAZR. In the next design of the product, they should make the plastic on the power cord thicker so that repeated bending does not break it. With the fast charger, it is plenty easy to keep the tek4 batteries fully charged. I tested several LED flashlights at Home Depot and found the tek4 light to be the brightest. I am annoyed however that the light comes on with the smallest rotation of the switch. The next design needs to make the light come on at the half-way point to avoid accidentally turning it on in your pocket. This light runs a LONG time on a single battery, maybe even the 6 hours advertised. You might note that the battery cap needs to be tightened all the way. I wrongly returned and exchanged a flashlight that I thought was broken when it just needs to be completely tight :) I have recommended these products to my friends :) December 16, 2009
Rated 4 out of 5 by Design drawback I really like this product, however it has a fatal flaw and unless the manufacturer moves swiftly to solve it, it will not exist in a year because no one will buy it. The green adapter which is clearly the most important, as it accepts a regular USB jack, which many devices utilize. The adapter then goes to a flimsy metal part that plugs into the battery itself. This adapter is easily fatigued and broken and unless one purchases the entire set AGAIN they cannot get a replacement part. September 9, 2011
2 3 >>


Standard Shipping includes delivery by small parcel service. Processing time varies by product.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.