$1 to get a high quality charger - XTAR MP1S
The Clearance sale is on again!
Check here: xtarshop | eBay Stores
they are great lights
VERY small
reliable
mine had sort of a banding to the color though, yellow and purplish regions
the UI will probably get old, especially if you also want to EDC another light that is opposite (also very common)
i hate having to do a long press to turn it off
and having to NOT CLICK TOO FAST to go to next brightness level (or it will start @#$ing blinking)
still
VERY SMALL, well made and cheap
also i got tired of limited 16340 run time
wle
I guess I “read” the instructions too fast…I’ve been carrying one of these for months and I didn’t even know it had a blinky mode.
I don’t understand why would Chinese company ship only to USA?
click it twice, fast
strobe mode!
amiright?
wle
IMO, the LiitoKala lii - 100 Smart Universal Battery Charger is a way better deal and blows the Xtar out of the water. Charges all types of batteries and is only $3.90 from BangGood.
“M4D M4X deals - Astrolux WP1 and WP2 LEP - #1572 by M4D_M4X
WK42 is an awesome little light. Very small and lightweight with great ergonomics. Feels great in the hand.
I replaced the guts on mine. It’s currently sporting a BLF17DD FET driver with moppydrv firmware and a Nichia 219C on Noctigon. I run it on an Efest IMR 16340. Output, tint and UI are much improved.
Lookit Mr. Fancy! 
wle
This is XTAR shop not XTAR. They’re basically just an ebay store with a warehouse in California. XTAR Direct ships everywhere (I think).
I gotta stop chiming in on the XTAR threads before people start thinking I’m a shill.
MP1s Is a dollar BUT it’s 2.60$ to ship
so lets call it like it is
$3.60 not such a great deal 
no shill
Just bumping this older thread because the price has dropped to $9.60 for the WK42 and $8.50 for WK21 (US only). Shipping is $2.60 or free if you spend $29 @ their eBay store.
These are both worth much more than this price so obviously worth the bump. I already have multiples of each and I’m still tempted to pick up more.