The Enlightened Charger Kit is the internationally compatible charger kit for the K2 LFP123A batteries, which are used in the Xen, Xeo, Kaon and Lynx dive computers.  They can also be used in the U-2 transmitter when inserted into the plastic spacer.

The kit includes a charger, AC adapter with international adapters, two rechargeable K2 LFP123A 3.2V batteries and 5 o-rings.