Charging at high C rates

[Marvin]

I'll explain my problem:

I have a Paladin L120 Pro (http://www.logicrc.com/?ItemId=O-FS-L120P&s=c:0,c:40), which is capable of 10A charge rates.

However, you have to tell the charger what capacity the battery is, and it won't let you charge at anything past 2C.

I have some Hyperion 3300 18.5V Lipos coming (courtesy of Arct1k), and they can be charged at 5C (obviously I can't quite manage 5C!).

So, I'm thinking the only purpose of telling the charger what capacity the battery is, is as a safety mechanism, so you don't charge at more than 2C.

Would it matter if I told the charger that it was a 5000mAh battery instead, so I could charge at 10A (well, about 8.4 - 9.2A with 18.5V)?

Considering that most chargers don't ask for battery capacity, I would have thought that this would be ok, but I need some second opinions really.

Thanks!