How are your Tenergy rechargeables working out?

[Sean]

I just picked up a Tenergy 123, 900ma charger + 4 batteries but haven't had a chance to use them in my lights yet because their still working off the primaries.  I ordered another 4 of the 123's as well (in the mail).
I know some of you guys have them and just wondered how they are working out for you?  I'm looking forward to using them in my Surefire lights (LED).

[NutSAK]

I'm not using  Tenergy brand, but I do use some Li-Ions.

Are your Tenergy 123 cells protected?

[Sean]

Yes apparently they are according to their website.