Thanks very much Foy for the excellent review as usual! Frontpage'd and Sticky'd.
I'm afraid that the Li-Ion only requirement is a deal breaker. The main reason I carry around a 1xAA light is because the batteries are available everywhere. If I want or need something more powerful I'll just use an 18650 powered XM-L flashlight.
Nice work foy. I'm always jealous of people's pictures. My Kodak just doesn't do the job. For those that need aa compatibility, the WK25B really is a nice upgrade over the original WK25. Much brighter on high and brighter than anything else I have on Nimh. I actually think you would appreciate it over the WK25, Foy. Only downside is that it doesn't have the DIY driver of the WK26 and of course you can't use it on 14500 should you ever feel the need.
About the clicky switch feel - The aluminum plug they inserted in the boot as a spacer in my sample of the WK25B really makes the clicky work a whole lot easier. It just makes it a tad to easy to click and doesn't feel as solid given its a hard piece of metal sitting unattached to anything in th boot. I'm really tempted to experiment with different materials to see if I can get something that will feel perfect. It's not the clicky switches fault really. If you take the switch out, you can tell it clicks just fine. It's just how it fits in the boot that creates the problem.The boot and the switch are just not suited for each other. I guess I could also try to find some spare boots and try to see if I can get one that fits and is better mated to the switch.
I have no doubt the Wk 25B is better than the Wk 25 and actually, the Wk 25 wasn't a horrible light, it was just a "meh" light. Xtar should probably quit sending me AA style lights because when spending my own money, I don't buy these kinds of lights. My taste is migrating from P60 to . . . something different and usually bigger.
Great review Foy, I have number 8 going by the s/n, they deserve to sell many more tho, my one issue with the light is that a tap on the tail causes it to change mode ( I only have low and high), I'm not sure if it's the battery losing contact or the switch, any suggestions?
I don't think it's the switch. Like Sir John mentioned, a spacer of some kind (depending on thickness) might increase the distance from the boot to the button. I haven't taken the switch apart but I've improved switch function on some of my other lights by progressively cutting down the little . . . . nubbin (?) inside the boot.