RE: (ET) dynamic braking

[Christopher Meier <Christopher Meier cwix com>]

Remember that due to wiring size and distance, fuses, multiple
connections, etc, that vehicle 12v accessories don't see the
voltage that is available at the battery. You can measure it
yourself on the car to be jumped. From postings on the EVDL
(EV discussion list) drops of 1-2v (under load) is common.
Also note that while the jump is occuring, the voltage will
fall on the source pack.  If still in doubt, simply disconnect
the ground (usually negative) cable on the battery of the car
to be jumped, and simply dump charge the battery, then reconnect
the cable to start the car.

-----Original Message-----

If you are daring, another answer: just tap at 16v (nominal, 
17v maybe) and
go for a guerrilla charge. (On the jump-ee: shut EVERYTHING 
OFF, and don't
try to start the jump-ee while the 16v pack is connected 
because that's a
risk to the jump-ee's electrical system and starter. I don't 
think it's a
big risk, but shit, even ONE BULB isn't worth it when you could 
just call
AAA. Oooh, imagine the rectrimination if you popped a headlight, or the
instrument cluster, ohmigawd!) You can put 17v across the jump-ee's batt
though, to charge it up, though you can't jump in the sense of adding
current to a weak (in the sense of curretn delivery) but fully charged
jump-ee's battery.