What's a typical value for battery current drain when a vehicle is totally shut down, no lights on, etc. ??
My 92 GMC Yukon 350V8, 4WD, had a almost-dead battery after 2 weeks of idleness. Recharged (Battery took about 25 AH) and floated at 1 amp overnight. Started fine. Hmm.. So I started checking further. I know there is SOME normal current drain, from onboard computers, radio clock, etc. But how much?
Here's what I see. What's your experience with this??
Run 1/2 hour, shut down. Battery V 13.25 Battery current .19 Amps (190 Milliamperes) Disconnect charged battery for 4 days: Battery V 12.95 Reconnect battery, Start Fine, Vehicle charging. Dash says 14V Meter says Battery V = 14.55 Shut down. Battery V= 13.35 hour later Battery V=12.57 Leave it overnight. Starts fine.
BUT I'm concerned about leaving it parked somewhere for a few days, now. .19 Amps seems high.. The math says .19 * 24 = 4.56 Amp-hours a day. 10 days 45 Amp-Hours on a maybe 50 Amp-hour battery. Not too good!
What are your experiences? Suggestions. If .19A is obviously high, where might I start looking?
Thanks! Regards, Terry King ..In the Woods in Vermont snipped-for-privacy@terryking.us