Quoted from wayout440:I'd probably try the Hakko battery powered cordless.
Quoted from Whysnow:Anyone else have one and use it?
I have one, and I've been a bit disappointed with it. It's relatively slow to heat up, and if I'm trying to reattach a wire to a coil, it takes forever to heat up the lug on the coil. I always end up going back to the toolbox to get my Hakko FX-600 iron with a cord. I know that doesn't help much since you're looking for cordless.
The reviews do say that it is more consistent with NiMH batteries, and while I've tried them, they were old ones that were probably near the end of their life. I should probably give it another try some time.