----- Original Message ----- From: "Peter VanDerWal" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, September 03, 2002 9:17 PM Subject: Re: EV Newbie -- 3
> > > > > >So, if I have a 120 volt battery pack of T-105s, I multiple 120x124 and get > >15,500 watts, or 15.5kW (VxA=W) of power on a fully charged battery pack. > > > Sort of. The pack voltage will sag under that kind of current, drop > continuously -though slowly- until it gets down to 105V at which point > the pack is empty (by definition a 120V pack is empty when it reaches > 105V). A 120 volt pack isn't empty when its voltage drops to 105. There's nothing sacred about 105 volts. A conservative driver wanting to be kind to his batteries would do well to avoid frequent drops below 105. A less conservative but still reasonable limit is 90 volts for short bursts of acceleration or hill climbing. A 120 volt pack that can't maintain 105 volts at 400 amps can still go a considerable distance if the current drain is reduced or if the pack is given a rest. Unlike a tank of gasoline, a battery pack doesn't suddenly go empty. Tom Shay
