I just got 2x Traxxas 7600mah 2s lipos to run in my 1/10 Summit(yes, I know to watch temps and I have a LVA). On the battery it says the charge rate is 1c and max charge rate is 2c. Is it in any way harmful to charge a battery above the "Charge Rate" up to the "Max Charge Rate"? If not then why are there 2 different charge rates on the package? Also, is it bad to slowly charge(0.1-2.0 Amp) a Lipo?

How water resistant are Traxxas lipos? I've seen crazy people on YouTube treating their 1/10 summit like a boat/submarine and that just looks like a horrible idea. Not sure what batteries they were using and I know waterproof lipos exist but it still seems like a bad idea.

What could I do to protect the batteries from the little rocks that get in the battery compartment and possibly puncturing the heat shrink or worse, the actual cells.