Real capacity
Watt-hours make it easier to compare how much work each battery can store.
STIHL LITHIUM-ION BATTERY · AK
AK 20
The balanced AK choice for more runtime without the weight of the largest battery.
144 WhEnergy capacity2.6 lbBattery weight36 VRated voltage
$149.99
Material 45204006536
Prices and availability may change. STIHL.com opens with Garland Saw selected as dealer 55279.
Energy capacity144 Wh
Battery weight2.6 lb
Rated voltage36 V
Maximum voltage40 V
Compare system, capacity and charge time
Capacity you can compare.
The balanced AK choice for more runtime without the weight of the largest battery. Compare watt-hours, weight and battery system before buying; STIHL AS and AK batteries are not interchangeable.
Energy capacity144 Wh
Battery weight2.6 lb
Rated voltage36 V
Maximum voltage40 V
Battery systemAK
Stay in the system
AS works with AS, AK with AK, and ALLPRO remains compatible with professional AP tools.
Dealer support
We can confirm the recommended battery for your exact tool before purchase.
Prices and availability may change. Contact Garland Saw to confirm the model or part number and current availability.
Safety & product information
Use it safely.
Read and follow the operator’s manual and all safety instructions supplied with the product.