[ausev] need advice on power management doo-hickey

[MLAB]

One of my home-built EVs (the complicated and expensive one) sat idle 
for a couple of weeks waiting for me to address various little problems 
that it had.  During this time I unintentionally left the main breaker 
switch on a battery pack open.  This meant that a DC-DC converter was 
allowed to draw power, and it ended up draining the pack by the time 
that I noticed it.

The simple way to avoid this problem is to remember to shut off the darn 
battery pack, but I'm wondering if anyone knows of a device that help 
guard against this sort of thing.

Say there was a device that monitored current in the battery line and 
when it saw that a small current had been flowing for a couple of hours 
it would open a contactor and isolate the battery.  Normally, there 
would be either no current flowing (battery disconnected) or 
intermittent high current (vehicle in use), so it would recognize if 
there was a steady leak.

Does anyone know of such a doo-hickey?

-- 
Mike Librik, LCI #929
Easy Street Recumbents
Austin, TX
(512) 453-0438
www.easystreetrecumbents.com