Paul you might want to switch your 46v Eteks for not two LEM130s, but FOUR LEM130s, at 36v. Even with four LEM130s and the batteries they swallow, theyd still be lighter than 2 Eteks and the batteries theyd swallow up. :P, and youd have 6 more horsepower. (36hp compared to 30hp with the Eteks)

And theres no such thing as running any heavyweight motor here, let alone Eteks, at 46v, without there being problems with the batteries: you wont get the full 30hp. :P If youre going to stick with the Eteks despite my advice, then run them at 48v :P