I have not heard of any issues with the Xtar WP2 II. Several reviews of the charger here on the forums:
https://budgetlightforum.com/t/-/3631
https://budgetlightforum.com/t/-/4442
And reviews for the Intellicharger:
https://budgetlightforum.com/t/-/8112
https://budgetlightforum.com/t/-/7763
If you don't have issues with shipping charges, here's a couple of good links for both to purchase:
http://www.ebay.com/itm/XTAR-WP2-II-Charger-Newest-Model-18650-18700-Batt-W-Car-adapter-/150663919662?pt=US_Flashlights&hash=item231444f82e
http://www.sbflashlights.com/Batteries-Chargers/Xtar-WP2-II-Li-Ion-Charger-p136.html
http://www.amazon.com/Nitecore-I4-Intellicharger-Combination-Batteries/dp/B007P5T1S0
http://www.mallardspring.com/nitecore-i4-v2-charger.html
http://www.ebay.com/itm/SYSMAX-Nitecore-Intellicharge-i4-Li-Ion-Ni-Cd-Ni-MH-Charger-/180942898247?pt=Battery_Chargers&hash=item2a21098447