Ok, just had to drop this here as well, for anyone else wondering if the WP6 II version will charge the batt sizes they need. According to this, the spacers come in with the charger (but waiting for Eric to verify that part, but as you can see the spacers are just little plastic dials that shorten the channel when they're screwed in. The exact wording is as such 'The charger is supplied with spacers that can be mounted on the plus terminal on the charger. Because the spring in the charger is longer than a spacer, it is possible to adapt the charger for any cell that is below 70mm in length.')
Chart shows that it will charge...
17670
18650
without the spacers
and
18500
17500
18350
16340/RCR123
14500/AA
with the spacers
Plus there's tons more data, and some close up photos and charts. Further down, in the comments, it gives some good tips, such as if you want to charge 3 batts or less, use slots 1, 3, and 5, and its not recommended to charge batts under 600mah. I don't understand most of the technobabble, but some of you might. I'm just thrilled that it'll handle all the sizes I need to charge. lol Again, this is an independent review, so its not by Xtar, but this guy clearly knows what he's talking about, and says xtar provided the charger for review, so guessing he's reputable. Everyone commenting seems to agree with all his assessments, so that's good enough for me.
Review of / Measurement on Xtar WP6 II charger