Free Shipping and BOPIS


Model # AP4001

Internet # 100671266

Store SKU # 164252

Tek4 4-Volt Lithium-Ion Battery

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

$12.97 /each
  • Fade free charge technology
  • Battery life will outlast 6000 AA Alkaline Batteries
  • Join RYOBI Nation and receive exclusive member only offers




Model # AP4001

Internet # 100671266

Store SKU # 164252

Ryobi's Tek4 4-Volt Lithium-Ion Battery powers the Ryobi Tek4 family of professional electronic tools and Ryobi 4-Volt power tools. One 4-Volt lithium-ion battery is equivalent to 3AA cells. This battery has a long run time so you're using it more than you're charging it.

California residents: see  Proposition 65 information

Info & Guides

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


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Battery Power Type 
Lithium Ion 
Color Family 
Power Tool Accessory Type 
Power Tool Product Type 
Power Tool Accessory 
Tools Product Type 
Power Tool 
Voltage (volts) 


Rated 3.9 out of 5 by 42 reviewers.
Rated 4.0 out of 5.0 by Handy with downsides The Ryobi screwdriver is very handy for any on the spot repairs, only bad side is getting a backup battery is very difficult online and too bad stores don't sell just the battery. January 22, 2015
Rated 1.0 out of 5.0 by Battery died Had the Tek4 kit (suppression headphones, drill, flashlight) batts worked great in light and headphones and recharged a few times. Battery died under load in 1st use in drill and wouldn't take a recharge, 2nd battery did same thing a week later in the drill. Only had for 2 months, returned to store for full refund as Ryobi CS wanted whole kit shipped to them and only warranted repair for 30 days. October 22, 2011
Rated 1.0 out of 5.0 by Lousy Battery. Purchased the Ryobi HP53LK TEK4 1/4 in. 4-Volt Screwdriver and the battery DIED on the second use. I returned the Ryobi Screwdriver and received a replacement. After the second use of the replacement, the battery DIED once again. The battery will not charge or do anything. I liked the small drill but it is no good without an operational battery. It has to be a design or manufacturing problem. November 2, 2011
Rated 5.0 out of 5.0 by Good product I have about six of these batteries for different products. I like using this battery and ryobi's led flashlights because you don't have to worry about throwing away a battery withpower left over because with led flashlights, you may have a period of bright light, then a long period of dim light. Not with ryobi's battery. You always have a strong beam of light. Now they need to make a """" head lamp""" August 1, 2012
Rated 1.0 out of 5.0 by battery is a dud - seems like a common problem now I got the electronic headphones and the small drill as Christmas presents about a year ago. I've only used them each a few times. The other day I noticed one of the batteries is dead and will not recharge. I notice the last 5-6 reviewers on here have the same problem. The add for the battery says it is the equivalent to 6,000 alkaline batteries. I probably used the drill 6 times. Long way from 6,000 alkaline batteries. January 4, 2012
Rated 1.0 out of 5.0 by Failed after two days use This battery didn't just loose capacity- it died suddenly while in use! I hope the replacement holds us better, since I like the drill, and would hate to find another one that is so small yet more than powerful enough for household use. September 20, 2011
Rated 1.0 out of 5.0 by lasted 2 months bought a kit with battery and charger in Oct and used the tool twice. Bout the flashlight yesterday and got my battery out of my kit and it will not charge, the chargers lights just blink without charging. Contacted ryobi CS tonight, we'll see what happens. December 1, 2011
Rated 5.0 out of 5.0 by Spare Power to go I bought 2 so that I have back up for my Tek4 driver, and light. I have the RP4400 High Intensity light, and the AP4302 Rapid Charger that comes with a USB cord, and can actually charge these batteries enroute to a job site. January 29, 2013
  • 2015-11-26 T10:27:10.328-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_42, tr_42
  • loc_en_US, sid_100671266, prod, sort_default
2 3 >>