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Old 10-06-2018, 10:56 PM   #8
Marshall V. Daut
Senior Member
 
Join Date: Apr 2011
Location: Davenport, Iowa
Posts: 1,374
Default Re: Battery keeps depleting

After charging the battery AGAIN - but with the negative cable disconnected - touch the end of that cable to the negative battery terminal post. If you hear or see a spark, there is definitely a drain somewhere in the electrical system. It's just a process of elimination until you find which component is drawing current. In addition to the two I suggested above as likely suspects, check the wiring behind the reflectors in the headlights. If one of the wires is frayed or loose and possibly touching metal inside the headlight shell or the light bulb socket, that will draw current, too.
If, however, there is no spark (it won't be big, so listen closely for the "snap"), then I'd suspect the battery itself. Batteries these days just aren't the same quality that they were a couple years ago and stories about defective batteries right out of the box abound.
Marshall
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