The two front reading lights and the dome light were left on for about
18 hours, on our 06 Civic Hybrid. The car will not start now, it is
not totally dead, but not enough to crank. I've currently got the
small 12 volt battery, the one in the engine compartment, on a 6 amp
'auto" charger, going on 2 hours now. The charger says it should take
4-9 hours to recharge (if possible). The charger needle initially
indicated 7~9 amps, oscillating quite a bit, and has currently settled
down around 2 amps. It appears to be doing it's job, it's a bit warm,
humming and it's correct polarity light is on. The battery state
indicator is still just showing clear surround and red dot in center.

I'm hoping all will be well in 5~6 hours, and I'll be able to
disconnect the charger, take it for a good run, and it will top itself
up over the next few days. Or second scenario, the small battery is
damaged beyond recharge and will need replacement. My biggest fear: Is
it possible the main hybrid battery has been damaged/discharged?