This is just flat wrong on every point, misstating every safety and battery / PV-mod limiting factor.
A regulated mod that boosts voltage over the 3.7 volts produced by the standard Li-ion battery is done by increasing the amperage draw from the battery. They ALL require High-Drain batteries to provide the necessary amps to provide additional volts. The maximum permissible amperage draw that a battery is rated for has NO EFFECT on how many amps are actually drawn by the electronics. The higher amp rating in a high drain battery is your SAFETY MARGIN.
Having a high amperage rating has no more effect on the amps drawn that a larger gas tank in your car would effect your gas mileage. You may go further between fill-ups but the MPG remains the same.
Stick with the batteries recommended by Glenn_K (10A or greater)
I was wondering how a 30amp high drain battery would cause any harm