Ryobi Tek4 4-Volt Lithium-Ion Battery-AP4001 - The Home Depot
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Model # AP4001

Internet # 100671266

Store SKU # 164252

Tek4 4-Volt Lithium-Ion Battery

Ryobi 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
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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 3 AA 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

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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 41 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 5.0 out of 5.0 by I love the tek4 stuff but it looks like they are getting rid of it I think I bought the last battery my store had I love the drill that came with the set I bought and another battery will make it more convenient. May 13, 2015
Rated 5.0 out of 5.0 by Great little power source It packs more power than I thought it would. I don't use it often but when I need it, I really need it. It always comes through. April 28, 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 5.0 out of 5.0 by Nice to have a spare battery Nice to have a spare battery. The price was right. Nice little drill for small prodjects. January 27, 2015
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 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 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
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