I have a cordless starter which will turn a DA 50 all day long.

It's called a Heli-Max. I don't know who makes it, but it cost me only $35 a year or so ago. it requires two 6-cell nicd packs @ 20$ a piece, but it's the best starter available.

Hope you can find it. If not, I will sell you mine with batts....I have moved to gas, permanently.