Oleo-Mac 54030001C Bi 2.5 OM Battery (54030027)

Quiet technology
The STIHL cordless tools are so quiet you don’t even need to wear ear protection.
Ematic chain lubrication system
The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%.
STIHL Quick Chain Tensioning (B)
The STIHL Quick Chain Tensioning system (B) makes it very easy to tension the chain. Simply release the sprocket cover and turn the thumb wheel to set the optimum tension. No tools needed.
STIHL Electric Motor (EC)
The STIHL electric motor (EC) is extremely energy efficient, lightweight and compact. It runs quietly, generates very low vibrations and does not require servicing.
QuickStop Super Chain brake (Q)
Additional braking system for increased safety, designed by STIHL. The chain does not only stop if kickback is sufficiently strong or during active actuation of the front hand guard, but also when you release the rear handle. Chain over run is stopped within seconds, helping to protect the user.
Neutral battery position
The battery can be inserted into the tool in 2 stages. In the first neutral position, the battery is secured in the tool but does not connect with the contacts, allowing for safe transport. In the second operating position, the battery is completely inserted allowing for full operation of the tool.
Transparent chain oil tank
The transparent tank allows the chain oil level to be easily checked without having to remove the oil filler cap.
Comfortable control handle
The soft black rear control handle ensures a safe and secure grip when in use. The control lever features a interlock system for added safety.
Designed for comfort
The ergonomically shaped front handle and soft rear control handle allow for a comfortable and stable grip in all working positions