Battery check
Checked my chassis battery 1 week ago and it was at 12.17 vdc (with the neg. lead disconnected), today I checked and it was at 11.88. Is this an expected drop? Battery is 2.5 years old. I checked the ...
Forum Discussion
Rodallg wrote:
Yes I meant "12" and not "2", I took it to walmart and had them test it. They said it was good, they charged it to 12.58 vdc and the CCA of 775 out of 850. I can't believe it is good though. I installed it back into the MH for and checked the draw again and was still at less than .9 milli amp, so in the next week I expect it to be low again.
Let's see what happens. If the battery has about a 100-AH rating (Group 27 battery), it should still be at 85% or so after running your parasitic load for a week. Even a Group 24 battery (75 AH rating) should still be at 75% (12.4 volts). (Again, I'm doing this from memory ... which ain't what it used to be. Google the topic to make sure the voltage-charge numbers are right.)
Also, I just went back and re-read the thread. Are you saying that the measured current is with the chassis disconnect switch off? If so, 90mA seems high. That doesn't answer the battery question, but it's something to think about once you get that issue addressed.
The good news is that electricity is 100% logical, so if you're methodical, you'll find it.
Keep us posted,
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