For use with 19 and 25 mm. wide polypropylene, and polyester strapping. Thanks to the battery operation the working range is extended independently of any power supply, suitable for the application with light and heavy duty polyester strapping with smooth or embossed surfaces. Tensioning of the strap, the friction weld seal and the strap cut-off are accomplished by pushing the respective operation buttons. The easy strap threading, both straps are inserted together, saves substantial time and is very user-friendly. Individual adjustable tool settings result in perfectly secured packages. Adjustable sealing time allows individual setting for a specific strap quality and size, hight seal efficiency is guaranteed. Battery autonomy approximately 100-150 straps, battery recharge time 25 min., battery life about 3000 recharge. One battery and one battery recharger are provided with the tool.