Some more questions... which one?

[Patrick]

There's no right or wrong weight to get. It's just what works best for you, and that can change depending on what sort of surfaces you drive on and what sort of driving you do. People often use between 10k to 100k+, but 20k or 30k is a good range for off road racing.

[Finnster]

I personally wuold not leave it sit @ 3.0V/cell. It will still self-discharge some, and if it drops below you'll frag your batt. Leave it charged somewhat at the very least. Looks great other tho.:)