RC-Monster Forums - View Single Post

zeropointbug · 12:52 PM

I have plenty of experience with A123 cells, I was probably one of the first persons to have acquired some (release day, developer kits). 1p in a buggy is not enough, the voltage drop will be quite substantial. You will have to keep the amp draw below 70 amps to keep good voltage sustained. They can deliver lot's of power for their mAh rating indeed, but you have to design your pack to take into account voltage drop. You should design your battery pack first, then choose your motor.

I have a 5s2p A123 pack, under 100 amp 'spike' draw, the voltage is roughly 14volts.

Do you know what the expected amp draw will be?

	(#4)
zeropointbug Z-Pinch racer Offline Posts: 3,141 Join Date: Nov 2006 Location: SK, Canada	05.25.2007, 12:51 PM I have plenty of experience with A123 cells, I was probably one of the first persons to have acquired some (release day, developer kits). 1p in a buggy is not enough, the voltage drop will be quite substantial. You will have to keep the amp draw below 70 amps to keep good voltage sustained. They can deliver lot's of power for their mAh rating indeed, but you have to design your pack to take into account voltage drop. You should design your battery pack first, then choose your motor. I have a 5s2p A123 pack, under 100 amp 'spike' draw, the voltage is roughly 14volts. Do you know what the expected amp draw will be? “The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens Last edited by zeropointbug; 05.25.2007 at 12:52 PM.