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Jrainman · 01-11-2018, 08:08 PM

I also have been using Schumacher battery Tenders , I have 3 one is 10 years old and the other is 8 the 3d I bought about a year ago because of the same issue as you are having ,newer car and truck have constent current draw 24/7 some more then others , I also found out that some autos need to be locked this puts them in to what is called by the dealer I spoke to (SLEEP MODE) knocking out most of the current draw , My dealer told me after I lock my car it still take 16 minutes for it to go to sleep( minimal current draw) .

01-11-2018, 08:08 PM	#4
Jrainman Registered User Join Date: Jul 2015 Location: North East PA Posts: 682	Re: battery charger I also have been using Schumacher battery Tenders , I have 3 one is 10 years old and the other is 8 the 3d I bought about a year ago because of the same issue as you are having ,newer car and truck have constent current draw 24/7 some more then others , I also found out that some autos need to be locked this puts them in to what is called by the dealer I spoke to (SLEEP MODE) knocking out most of the current draw , My dealer told me after I lock my car it still take 16 minutes for it to go to sleep( minimal current draw) .