I am trying to find out info and availability of a blade that goes on a gas trimmer called a Beaver Tail. I understand that it is made like a chainsaw blade but in a circular shape. Local dealer here no longer stocks them. Second question. I have a ELF cordless grass mower. I do not have the battery charger for it. Can I use a regular automotive type charger on it ? Calls to the 800 number on the unit are fruitless, person answering on a machine stating "I'll return your call" Month has passed after 3rd call and no answer. Any help is appreciated. This appears to be a great site for me to read and learn from, thanks to all participants.