From Personal Test I know the latter half about the abilities blocking it are true, same if the Pokemon holding the Cell Battery is Ground Type.
As for Official info, there never is any official info on how items work outside of the in game descriptions which don't state that the holder takes no damage when the item is consumed.
I've never tested Cell Battery nor Absorb Bulb outside of the few test I did for ability/type blocking.
What I mean is there VCG rules posted somewhere? Or will they be posted for the tournament. Would like to use a rain team