Wandering off-topic but this page couldn't be less accurate about LiIon:
Rechargeable Battery Care
Nearly all of its guidelines are for Nickel-based rechargables; they would harm a LiIon battery. I almost wonder if it's even written by the same person throughout:
"NiCad batteries are rechargeable, whereas Lithium and alkaline batteries are not rechargeable."
Lithium batteries are not rechargable... wow.
Read this instead:
How to prolong lithium-based batteries
This doesn't explain why the Samsung Moment has awful battery life (mine does as well), but it does clear up some non-reasons.
Personally I think the Moment has a power-hungry CPU, a small battery, and an irresponsible manufacturer. Hopefully fixes to Android and reducing the number of background apps can mitigate the issue, but ultimately the culpability lies with Samsung. I'm very disappointed.
As a point of comparison, my previous Windows Mobile phone by HTC had a 1500mAh battery, and a 400Mhz Qualcomm CPU. The Samsung Moment has a smaller 1350mAh battery, and a 800Mhz Samsung CPU.
One of the primary arbiters of power draw in any CPU is Mhz. You can increase speed with efficiency, or just slamming it with more power. The latter increases Mhz, the former leaves Mhz be but gets more operations per second out of the same cycles.
I canNOT find any claim as to the wattage draw of the s3c6410 CPU in the Samsung Moment, especially on Samsung's site which is not a good sign. I can find performance reviews showing that the s3c6410 is significantly less efficient than for example the Qualcomm Snapdragon CPU found in the Nexus One.