Batteries Keep Dying?????

[hoosier golfer]

Ok guys, anyone out there had this problem?? I put new batteries in my truck in December, Since then I've went out to start my truck & had no juice twice. As far as I know I've not tapped into any hot wires that get juice when the key isn't on. All mods are listed in my sig, any help would be great as this is getting very annoying!!!

[hoosier golfer]

I disconnected both grounds today & I put a voltage meter (battery tester aka hotbox) between each one (cable & ground on battery) the drivers side showed 0, the passenger side battery showed a draw of 12 Volts any ideas????

[hoosier golfer]

Anyone Out There???

[WEWILLE]

You have a parasitic draw. Disconnect the battery that is not hooked to the alternator. Then on the other battery disconnect the negative terminal and wire a ammeter between the battery and the negative cable. Draw should be under 3 milliamps. If over start pulling fuses to isolate the offending circuit.

[Ronbo57]

I have the same problem. I recharge the batteries after disconnecting the neg. on the starboard side, charge them to 100% reconnect and everything is fine for a couple of weeks, and up to 3 months before it happens again. Have you found your problem yet? Both my batteries are less than 8 mo old. Has been happening shortly after I put the new set in. I was happening before replacement as well.

[WEWILLE]

Originally Posted by Ronbo57

I have the same problem. I recharge the batteries after disconnecting the neg. on the starboard side, charge them to 100% reconnect and everything is fine for a couple of weeks, and up to 3 months before it happens again. Have you found your problem yet? Both my batteries are less than 8 mo old. Has been happening shortly after I put the new set in. I was happening before replacement as well.

You also need to use an ammeter to find the draw.

Which side is starboard?

[vitalidle]

Originally Posted by WEWILLE

Which side is starboard?

Thats boating speak for right side. Port is the left

[hoosier golfer]

Thanks guys i'm gonna see if I can find an ammeter tomorrow and figure this out! i'm tired of disconnecting my batteries every darn night!!!!

[WEWILLE]

Originally Posted by vitalidle

Thats boating speak for right side. Port is the left

haha i gotcha i knew it was for boats, but didnt know which side!!haha


And yea you could possibly get a cheap ammeter at radioshack or someplace. Goodluck, and let us know what ya find or if ya have more questions!

[ick5521]

It would be interesting to see what the draw is. It might also help when you buy batteries to get a good matched set. Spend the extra few hundred and you'll save a lot in the long run.
Hoosier golfer - If you have one battery at 0 volts that's the problem battery as it's draining the other one - make sure you're replacing BOTH at the same time (don't know if you knew but figured I'd type it anyway).