Check out this
LIPO SHIELD from
Common Sense RC.
Specs:
Model: LipoShield
Specifications: Input voltage: 1s to 12s Lithium or Lithium Polymer
Cutoff voltage: 3.0V/cell
Weight: 3.5g/.13oz
Works with all ESCs
Applications: Any plane without an effective lithium cutoff.
For $20 and 1s to 12s seems like a better deal then the Novak. I just ordered one from my LHS. I'll post a review once I get it.