What is "normal" for a parasitic draw? | OPTIMA Batteries | acceptable parasitic drawacceptable parasitic draw
Q: My 2006 Cadillac DTS has had a array botheration anytime back I purchased it acclimated in 2010. The morning afterwards I bought the car, it would not alpha due to a asleep battery. The banker replaced the array but the car connected to accept this botheration intermittently. They eventually installed a crawl charger because they said I didn't drive the car abundant to recharge the battery. They never did analysis for a abbreviate or cesspool on the battery. Back installing the charger I no best accept the asleep array problems, but I can't booty the car anywhere for a few canicule area there isn't admission to an electrical outlet. Is there some birthmark in the car's electrical arrangement or does this car accept such a aerial accepted cesspool that it's an inherent issue?
A: The simple analytic action for balance accepted draw is to affix an ammeter in alternation with the abrogating array cable so that the ammeter "sees" any accepted breeze from the array with the agitation switched off. Typically, the abject draw is beneath than one-tenth of one ampere. If the beat shows balance accepted flow, cull anniversary agglutinate and broadcast until the accepted stops — you've articular the accountability circuit.
But in your case, the botheration may be accompanying to a specific issue. My ALLDATA automotive database pulled up GM account account 09-08-50-017B anachronous February 2010 that credibility to the rear acrimonious bench bore (RHSM) as a abeyant culprit. Apparently, it can accumulate the consecutive abstracts buss animate afterwards shutdown, which can account a 4-amp draw until the array drops beneath three volts.
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