Smart Car Forums - View Single Post - Dead Battery
Thread: Dead Battery
View Single Post
post #10 of (permalink) Old 03-21-2019, 08:21 AM Thread Starter
johnyoung39
 
Join Date: Feb 2019
Posts: 5
Thanks: 3
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Got it started!

Quote:
Originally Posted by johnyoung39 View Post
I've tried to jump the 12V but I am not getting any dash lights to come on at all. Could there be a fuse that is preventing the power from reaching the control systems?
Quote:
Originally Posted by Yinzer View Post
I had to look up what a "Halo" is. Its claimed "57,720 mWH" (i.e. thousanth-of-a-watt-hour) of power is in more plain language, 57 watt-hour or a minuscule 4 1/2 amp hour at 12.5 volts. That can't begin to charge a completely dead car battery which can be 50 to 100 amp-hr.
Thanks, Zinzer for the info regarding the type of 'jump start' the 12-volt system needed. I thought that the small jump assist units out there, like the Halo I used, would do it, but no, they won't. So i followed your advice and jumped it from another car. That did it! Turns out I still had 65% in the main battery but drained the 12 volt. Even better news for me is that the 12-volt battery has come back to life and has not failed to hold a charge for 2 weeks now. Love this board!
johnyoung39 is offline  
 
 
For the best viewing experience please update your browser to Google Chrome