I am not recommending anything but I am managing to start my Fastcut 34" with a gel battery, which is smaller in size, a tad taller, than the lead acid it replaced. I had to put longer bolts in for the bracket. probably done a minute on the starter motor, too soon to tell about charging . I am still w1orking on the motor etc. It came from amobility scooter and cost me nothing as I already had it. It is 3 years old but hardly used.
