STIHL AK 20 Lithium-Ion Battery
The STIHL AK 20 is one of the most powerful batteries in the STIHL AK System, delivering strong performance and extended run times in a compact, lightweight design. Ideal for homeowners and occasional users, the AK 20 is designed to provide optimal power with minimal self-discharge, even during extended storage.
With a built-in LED charge display and compatibility with several key AK System tools, the AK 20 is the go-to battery for tackling yardwork with confidence. Whether you're trimming, blowing, or pruning, this battery helps you get the job done efficiently—without the hassle of gas.
Key Features
- Compact and Lightweight: Weighs just 2.7 lbs. for comfortable use and easy handling.
- Compatible with AK System Tools: Powers select battery-powered tools including the MSA 120 C-B, FSA 60 R, HLA 56, BGA 50, and SHA 56.
- Minimal Self-Discharge: Maintains charge during periods of storage.
- LED Charge Display: Easy-to-read LED lights show current battery status at a glance.
- Optimized Power and Runtime: Ideal balance of capacity and performance for residential yardwork.
Specifications
- Weight: 2.7 lbs.
- Battery Capacity: 4.0 Ah
- Rated Voltage: 36 volt
- Battery System: AK System
- Compatibility Note: Not compatible with the AS System or the AP System
The STIHL AK 20 provides reliable battery power and extended run times for your AK System tools—perfect for keeping your yard looking its best.
Genuine STIHL OEM
Trust the performance and durability of genuine STIHL OEM products. Built to the same standards as your equipment, they help ensure optimal performance and long-lasting reliability.
Make Sure It Fits!
Double-check your equipment manual and model number to be sure this part is the right one. It only takes a minute and can save you the hassle of returns. Not sure? No problem! Reach out to us — we’re happy to help you find the right part.

