Battery Drain

Message Share Topic Printable Version Google Delicious Digg StumbleUpon Windows Live Yahoo Bookmarks reddit Facebook MySpace Newsvine Furl Topic Search Topic Options Post Reply Create New Topic

   This is good! 

" Checked voltage.  Both showed near 14 volt." 

Problem number one. Those batteries were not at rest. Any test placed upon batteries that haven't rested I (and I do mean I) don't trust as real. At rest they would never show that high a voltage. That's not a good read. We have not eliminated the batteries as of yet.

Please try the test I've suggested and let's hear the results. I betting a beer right now, after a 24hr rest those batteries will read about 12.3v.. Since we're talking plural, test each separately please. 

[/QUOTE]
Makes sense.  I'll eventually do that. Then proceed from there.  If batteries are bad, I'll owe you a beer!   

Author	Message Share Topic Printable Version Google Delicious Digg StumbleUpon Windows Live Yahoo Bookmarks reddit Facebook MySpace Newsvine Furl Topic Search Topic Options Post Reply Create New Topic
Tibof Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Sep 2017 Location: North Idaho Online Status: Offline Posts: 115	Topic: Battery Drain Posted: 16 Jun 2020 at 5:42pm
	This is good! " Checked voltage. Both showed near 14 volt." Problem number one. Those batteries were not at rest. Any test placed upon batteries that haven't rested I (and I do mean I) don't trust as real. At rest they would never show that high a voltage. That's not a good read. We have not eliminated the batteries as of yet. Please try the test I've suggested and let's hear the results. I betting a beer right now, after a 24hr rest those batteries will read about 12.3v.. Since we're talking plural, test each separately please. [/QUOTE] Makes sense. I'll eventually do that. Then proceed from there. If batteries are bad, I'll owe you a beer!
	2015 Pod Hood River Edition 2012 Tacoma Crew Cab 4 Liter

Tibof Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Sep 2017 Location: North Idaho Online Status: Offline Posts: 115	Posted: 19 Jun 2020 at 10:31am
	Let batteries rest, uncoupled and isolated for 24 hours. Voltage on each was exactly the same, 12.8 volts. Soooooo, batteries are not the issue. Don't know what is, but will report back any further findings.
	2015 Pod Hood River Edition 2012 Tacoma Crew Cab 4 Liter

offgrid Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290	Posted: 19 Jun 2020 at 9:17pm
	It is possible for batteries to have a good resting voltage fully charged and still be low on capacity, but I agree its not likely. Assuming they are good then there are really only 4 things that can pull out around 100 amphours and fully discharge them overnight that I can think of. One is the fridge on 12V as you suspect, (2) is if the breakaway brake pin had been pulled, (3) is if the water pump ran continuously, and (4) is an intermittent short somewhere. Beyond that it would take several loads being left on I think.
	1994 Chinook Concourse 1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold

Olddawgsrule Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 20 Sep 2017 Location: New Hampshire Online Status: Offline Posts: 1014	Posted: 20 Jun 2020 at 6:46am
	Very good! Looks like I owe you a beer and happy to pay up! That's a good sign. Next easy test is to put a known load on them (one at a time). Doing a little math you can tell if there's a basis of capacity in them. The chart (if you have no other way) can still be used. It will show if there's an issue. Once that is done, we can safely rule out the batteries. Though I'm onboard with them probably not being the issue.. I agree with the two major draws being the frig (on battery) and that breakaway brake cable being pulled. I would think if the was a short somewhere causing this it would be noticed elsewhere as well (like something not working). Everything else is working fine?
	Byways no Highways 2017 Tacoma Truck Camper Build 2004 F150 My Overlander