Prius parasitic electrical current when parked.

this fella says 25ma

prius-battery-keeps-dying

and this is a helpful thread:

parasitic-current-draw.217236

 

I got around 18 milliamperes, with spikes to around 40~45 every 5 seconds or so, which might have been the security icon on the dash.

 

NO. Assuming that your lights are normally all OFF......and the parasitic current is close to ZERO.......
then you are seeing signs of a 12 V battery reaching the end of it's life.
How old is your battery ?

Outside chance it's not being charged enough but that almost never happens.
Well except for folks who make only short trips between many days of non-use.

 

That's us. Our 8 year old battery lives spends all downtime connected to a CTEK 4.3 smart charger, tests like a new battery.

@William11348o what's your usage like?

 

Optima started out being pretty good.
Then they got BAD.
Based on reports from owners.

I don't know the current thinking but the glowing praises
of Optima just aren't there anymore.

 

Our’s is an optima yellow top, installed September 2015, still testing like new. Could be prior to rumoured quality-drop though.

Full disclosure: we are LOW usage, but I have it hooked up to a smart charger ‘round the clock during idle times.