STIHL® AK 20 36V Lithium-Ion Battery

Optimal Power-to-Weight Balance. Full Zero-Fade Performance. Universal AK Cordless System Compatibility.

The STIHL AK 20 36V Lithium-Ion Battery injects extended cordless runtimes, reliable property maintenance energy, and fade-free motor operation straight into your regular property maintenance routine. Purpose-built to eliminate heavy arm strain, repetitive recoil pull starting, and the frustrating slowdowns typical of standard generic battery cells, this genuine STIHL AK power core provides an ideal mid-range storage capacity. It equips dedicated homeowners, estate managers, and yard crews with a reliable 36V platform optimized to run cordless chainsaws through tough logs, power high-speed leaf blowers, trim long lawn borders, and maintain crisp shrub hedges.

Intelligent power regulation and a robust, low-profile footprint form the engineering core of this reliable STIHL AK 20 Battery. Delivering a substantial 144 Wh of total energy capacity and a rated 4.0 Ah current capacity, this power pack weighs just 2.6 lbs (1.2 kg) to keep your equipment feeling balanced and nimble. Unlike lesser brand alternatives that lose cutting torque or blower velocity as the cells drain, the integrated Constant Power electronics actively manage current delivery to ensure your tools run at 100% top speed from the very first pull until the pack is completely empty. Built into a durable, shock-resistant housing, the battery includes a simple 4-LED onboard fuel gauge for fast charge updates at the tap of a button.

Why the STIHL AK 20 Rules Your Home Landscaping Setup:

• Perfect Mid-Range Capacity: Packs a strong 144 Wh energy curve into an ultralight 2.6 lb frame to increase working runtimes without adding tool bulk.
• Intelligent Constant Power: Premium built-in circuit controls prevent operational motor lag, delivering peak tool performance through the entire charge cycle.
• Universal AK Platform Fleet Fit: Rapidly swaps out between your MSA 120 chainsaw, FSA 60 R trimmer, BGA 57 blower, HSA 60 hedge trimmers, and more.
• Onboard 4-LED Charge Grid: Bright, top-mounted indicator light board tracks real-time power levels and diagnostic warnings quickly.
• Extremely Minimal Shelf Drain: High-density cell architecture features excellent retention qualities, suffering virtually zero power loss during winter storage.

Specifications