I grew up in western Scarberia.
I haven't had time to do any test, amp meter readings on my cordless, the heavy wire size is 12ga. Double the voltage 1/2 the amps for the same power.
Plan on trying a extra battery, 36volt set-up, on a 24volt yardworks push mower. Be nice to have more power.
A battery you might want to look at is the lawn tractor battery, 34 amp/hr, you can get the sealed type at CTC or WallMart, about $100. last time I checked.
Currently working on this as time permits>
http://ecorenovator.org/forum/lawn-g...ower-deck.html
Also I have a Suzuki Sidekick with a good body and a ADC FBI4001A
hope to someday make a battery powered EV out of the 2.