I am hoping someone has some experience with Makita ‘fake’ batteries. I have a few for hobby purposes, and as I have them I am planning to get a Makita mower. My question is does anyone know if they will work ok. Obviously they will fit, and power the machine. And I have a genuine Makita drill which works perfectly. But when I put two of the batteries in series to run my current mower, a Spear and Jackson, it would run fine but only for about a minute. The voltage on the batteries falls rapidly, so that is obviously the problem. Anyone have some experience with this issue?