I've had a Stihl weed eater for years and now have a desire to transition to a battery powered unit. My current machine has been problematic for sometime and I want to get away from pull cord tools. Shoulder problems etc. This one piece of equipment is all I need now but want to be set so that the batteries can be used in other tools at a later date. I know there is a large selection to choose from but some are pretty expensive. My current machine has the head pictured below. I like it and would prefer to stay with this type but don't know if that is possible in a battery powered tool. I've not been success in finding that out. Does anyone have suggestions for a manufacturer/model?