You're going to have a tough time finding someone who has used all of the Kr8 fat batts. I own the 750 mAh Elegant from CigEasy. It is the same size as the 650 mAh eGO and 750 mAh Riva-510 (but with fitting for Kr8 cartos and 901 atomizers). I believe that VaporNine's 750 Defender is
similar, but in photos it appears a bit wider than the Elegant. I know
of the 650 mAh PigCig from LeCig, but know little about it, although it also appears wider than the Elegant. [There also is the Riva-901, which is intended for the 901 atomizer and works with
some Kr8 cartomizers.]
The Elegant was the first and is now the least expensive ($60 for the two-battery kit). [Actually, the Riva-901 is less, but it is not really a Kr8 battery.] It has performed well for me. Since I don't like cartomizers that much, I've used it quite successful with 801, 510, and 306 atomizers (using the appropriate adapter, of course. I reviewed it
here back in June.
The Elegant has its own unique fast charger, not compatible with standard Kr8
batteries. [I suspect the same can be said about the Defender's and PigCig's charger.] I've never timed how fast the 750 mAh battery charges. 2-3 hours perhaps.
Recently, CigEasy has come out with 1300 mAh battery for the Elegant (available solo for $25 or in a one-battery kit for $50). It, of course, is longer than the 750 mAh version.
How long any of these
batteries go between charges is determined by the mAh rating. So the PigCig would be the least and the Elegant 1300 the most (by a wide margin).
I don't think that Smoore's X-Power (e.g., from LiteCigUSA) uses KR808D-1 cartomizers. Kr8 cartos have a female connection. Notice that this is male.
