Here's how they got me:
The product I bought and got screwed on were Lipo batteries that CKRC sold as 1500mah 3s packs. I bought 4 packs, and after 3 cycles, 2 of the batteries each lost a cell (had them less than 2 weeks). I balance charge my batteries at 1C with a Hyperion charger and I never setup my lipo cutoffs to anything under 3.3v per cell. At first sign of it going into cutoff, or the crawler losing power, I always pull the pack. I don't take a chance with lipos.
I sent multiple emails and PMs asking for help with this. After a couple weeks and not a single responce, I called the number on the site. I was polite and simply explained what happened to the batteries. Before I had a chance to even ask for replacement, refund, anything, the guy on accused me of abusing the battery and basically gave me a "What do you expect me to do about it?" and hung up on me.
Later, I found out that the batteries were really 1300mah batteries that they were selling as 1500's. They had a ton of problems with them, but refused to do anything for their customers.