The Ultrafire 501A , takes a 16340 [ RCR123A ] to 18350 battery and is a P60 host .
This one came from Manafont.com , and is very well priced . link will take you to the 501A
Now I found myself in a curious position of having too many P60 drop ins in my spare parts box , and I was looking for an excuse to buy another 501A for one of my favorite drop ins , recently made homeless by my Dual XM-L drop in . Yes I'm talking about my Dual XP-G R5 drop in , and I think it works in the 501B really well .
For the price [ payed some $5.89 ] this is one heck of a deal , and if you have a few P60 pills doing nothing , then for the price of a Hamburger , you could have a very nice little flashlight . There is only one issue with the 501A I have to talk about , the clicky needs adjustment . As it comes the nipple on the rubber boot puts pressure on the switch causing variable output and flickering , the cure is so simple . One only has to trim the nipple on the rubber boot about 1mm to release the pressure , and the switch becomes very reliable and consistent , but seriously , $6 posted to your door , so it needs a little nipple tweak [ ok , I just had to say that , OK! , I had to ] .
Aside from the small clicky issue , this is a wonderful host .Mine is very well made , everything goes together tight , there are O rings where they need to be , the threads are well cut , anodizing is nice and even , and it just exceeds the price paid by such a huge margin , this really is a must have host if you have some spare P60 pills lying around gathering dust . Now the other nice thing , is the ability to run 18350 cells , this is a huge plus , as it gives you more options for the P60 pill you want to run . And in this regard , I have gone with the Dual XP-G R5 , for some approximately 400L output , making this a very nice little pocket light . And in case you were wondering , this is my 3rd 501A now , and there is no buyers remorse what so ever , in fact , I love it .
Ultrafire 504B , Takes 2 x 16340 [ 18350 ] or a 18650 battery and is a P60 host.
This one came from Manafont.com , and is very well priced .
What can I say , with some 9 spare P60 drop ins doing nothing , I had a good excuse to buy the 504B .
Now I put a stock standard 5 mode Solarforce XR-E drop in into this host just to get a feel for it , as I will be building some more XM-L drop ins in the near future , I will end up with even more P60 drop ins doing nothing . Well lets talk about the 504 , no real flaws to talk about , as it came it worked just fine . For the $8 shipped to my door price , its a very nice host , and it just looks Bling !
The threads are very well cut , O rings through out , low profile bezel , nice even shinny anodizing , just a lot of value for the $8 spent , which would be comparable to a Burger with fries and a coke . Have we lost perspective ? , because this is really good value . Again if you find yourself with a growing collection of P60 pills as I do , I cant think of a cheaper , or better for the $ spent , host .
The only thing I could possibly pick on , just to dig up something , is there was just a little slop in the head [ threads ] but the O ring fits well [ seals ] and once the head is tightened down , its really a non issue , and its the tailcap that comes on and off on a regular basis , and the fit is very nice , would be hard to find better until you go L2P or something . The action and feel on the tail clicky is almost perfect , I would have like a little more tension , but thats just me . Over all a very nice host , looks fantastic , works well , I had no issues with it , and I can based on this example , recommend it to anyone looking for a 18650 host for less than $10 shipped to there door . Just in case you were wondering , will it LEGO with Solarforce parts , the answer is yes .