Abstract: The present disclosure relates to a lubrication monitoring system (15) configured to monitor a supply of lubricant in a hand-held cutting tool (1) having a cutting unit (3, 5). A lubricant tank (41) and a conduit (45) are configured to duct a flow of lubricant from the tank (41) to the cutting unit (3, 5). The lubrication monitoring system (15) comprises a heating element (29) and a sensor arrangement (31, 33), the heating element (29) being configured to heat the lubricant flow. The sensor arrangement comprises a first sensor (31) located at the flow, upstream of the heating element (29), and a second sensor (33) located at said flow, downstream of the heating element. The lubrication monitoring system outputs a monitoring signal based on a sensed temperature difference between the first and second sensors (31, 33).

Abstract: The present disclosure relates to a battery-powered chainsaw (1) comprising a cutting tool in the form of a saw chain (4) running on a guide bar, a front handle (7) at least partially extending transverse to the elongation of the guide bar and a rear handle (5) extending, at least partially, approximately in the elongated direction of the guide bar. A battery-operated heating unit comprising a first heating element (15) in the rear handle, a second heating element (13) in the front handle, and a temperature sensor (17) located in either of the rear or front handle. The heating unit (19) is configured to provide power to the first and second heating element based on a reading from the temperature sensor (17). Upon activation, a temporary power boost is provided to the first and second heating elements and subsequently a steady state power, lower than the power of the power boost.