(#ix5mbfa) I add to that, I purchased a 18V cheap electric trimmer, ripped the battery bit out, hooked up a 12 metre cable to an old car battery on 12V, and cut anything I like with it, the machine ran at 60% of its strength due to the reduction of the voltage, never was strong enough to break the whipper cord, and while a little less powerful in cutting, I ran the system all day. The only thing that was a little inconvenient was lugging the heavy battery around in 12m increments. On the plus side, I have never changed the whip cord. It’s great.