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Re: (ET) Max power consumption on snowblowing....



On 1/28/2011 1:35 PM, David Roden wrote:
On 27 Jan 2011 at 23:14, Chris Zach wrote:

Just how much current can a set of T105's provide?
The internal resistance of a golf car battery is about 0.003 ohms.  By 
Ohm's
law, I = E / R =>  6 / .003 = 2000.  So a golf car battery should be able 
to
produce 2000 amps into a short circuit.
Well, this should help but I doubt anyone could drag a battery down to 
zero on an E20. I'd assume 30 volts as the cut-off because below that 
the contactors start to drop out and things get odd. So if we do that 
math then we have:
30/6=5 volts per T105, or a 1 volt drop. I=E/R=1/.003=333a. Well 
333.33333 but whatever.
So it sounds like a set of good T105's aren't going to put out any more 
than 333a. Which is about the limit of what my batteries were going to 
except my voltage was in the 35-36 volt range. So I assume you just 
can't push a snowblower to the lofty levels there.
C